diff --git a/client/src/app/generated/server.model.graphql b/client/src/app/generated/server.model.graphql
index ccaf05d19..3fbbe6840 100644
--- a/client/src/app/generated/server.model.graphql
+++ b/client/src/app/generated/server.model.graphql
@@ -92,6 +92,11 @@ interface ActivityInterface {
 The connection type for ActivityInterface.
 """
 type ActivityInterfaceConnection {
+  """
+  List of activity types that have occured on this entity.
+  """
+  activityTypes: [ActivityTypeInput!]!
+
   """
   A list of edges.
   """
@@ -112,10 +117,27 @@ type ActivityInterfaceConnection {
   """
   pageInfo: PageInfo!
 
+  """
+  List of all organizations who are involved in this activity stream.
+  """
+  participatingOrganizations: [Organization!]!
+  subjectTypes: [ActivitySubjectInput!]!
+
   """
   The total number of records in this filtered collection.
   """
   totalCount: Int!
+
+  """
+  When filtered on a subject, user, or organization, the total number of events
+  for that subject/user/organization, irregardless of other filters.
+  """
+  unfilteredCount: Int!
+
+  """
+  List of all users that have performed an activity on the subject entity.
+  """
+  uniqueParticipants: [User!]!
 }
 
 """
@@ -133,6 +155,41 @@ type ActivityInterfaceEdge {
   node: ActivityInterface
 }
 
+enum ActivitySubjectInput {
+  ASSERTION
+  EVIDENCE_ITEM
+  FEATURE
+  FLAG
+  MOLECULAR_PROFILE
+  REVISION
+  REVISION_SET
+  SOURCE
+  SOURCE_SUGGESTION
+  VARIANT
+  VARIANT_GROUP
+}
+
+enum ActivityTypeInput {
+  ACCEPT_REVISIONS
+  COMMENT
+  CREATE_COMPLEX_MOLECULAR_PROFILE
+  CREATE_FEATURE
+  CREATE_VARIANT
+  DEPRECATE_COMPLEX_MOLECULAR_PROFILE
+  DEPRECATE_FEATURE
+  DEPRECATE_VARIANT
+  FLAG_ENTITY
+  MODERATE_ASSERTION
+  MODERATE_EVIDENCE_ITEM
+  REJECT_REVISIONS
+  RESOLVE_FLAG
+  SUBMIT_ASSERTION
+  SUBMIT_EVIDENCE_ITEM
+  SUGGEST_REVISION
+  SUGGEST_SOURCE
+  UPDATE_SOURCE_SUGGESTION
+}
+
 """
 Autogenerated input type of AddComment
 """
@@ -2205,7 +2262,9 @@ enum EventAction {
   ASSERTION_SUBMITTED
   COMMENTED
   COMPLEX_MOLECULAR_PROFILE_CREATED
+  CREATED_FEATURE
   CURATED_SOURCE_SUGGESTION
+  DEPRECATED_FEATURE
   DEPRECATED_MOLECULAR_PROFILE
   DEPRECATED_VARIANT
   FLAGGED
@@ -5553,6 +5612,8 @@ type Query {
   List and filter activities
   """
   activities(
+    activityType: [ActivityTypeInput!]
+
     """
     Returns the elements in the list that come after the specified cursor.
     """
@@ -5572,7 +5633,16 @@ type Query {
     Returns the last _n_ elements from the list.
     """
     last: Int
-    userId: Int
+    mode: EventFeedMode
+    organizationId: [Int!]
+
+    """
+    Sort order for the activities. Defaults to most recent.
+    """
+    sortBy: DateSort
+    subject: [SubscribableQueryInput!]
+    subjectType: [ActivitySubjectInput!]
+    userId: [Int!]
   ): ActivityInterfaceConnection!
 
   """
diff --git a/client/src/app/generated/server.schema.json b/client/src/app/generated/server.schema.json
index 78aaf0c7d..7b282f4a6 100644
--- a/client/src/app/generated/server.schema.json
+++ b/client/src/app/generated/server.schema.json
@@ -716,6 +716,30 @@
           "name": "ActivityInterfaceConnection",
           "description": "The connection type for ActivityInterface.",
           "fields": [
+            {
+              "name": "activityTypes",
+              "description": "List of activity types that have occured on this entity.",
+              "args": [],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "LIST",
+                  "name": null,
+                  "ofType": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "ENUM",
+                      "name": "ActivityTypeInput",
+                      "ofType": null
+                    }
+                  }
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "edges",
               "description": "A list of edges.",
@@ -796,6 +820,54 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "participatingOrganizations",
+              "description": "List of all organizations who are involved in this activity stream.",
+              "args": [],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "LIST",
+                  "name": null,
+                  "ofType": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "OBJECT",
+                      "name": "Organization",
+                      "ofType": null
+                    }
+                  }
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "subjectTypes",
+              "description": null,
+              "args": [],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "LIST",
+                  "name": null,
+                  "ofType": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "ENUM",
+                      "name": "ActivitySubjectInput",
+                      "ofType": null
+                    }
+                  }
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "totalCount",
               "description": "The total number of records in this filtered collection.",
@@ -811,6 +883,46 @@
               },
               "isDeprecated": false,
               "deprecationReason": null
+            },
+            {
+              "name": "unfilteredCount",
+              "description": "When filtered on a subject, user, or organization, the total number of events for that subject/user/organization, irregardless of other filters.",
+              "args": [],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "Int",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "uniqueParticipants",
+              "description": "List of all users that have performed an activity on the subject entity.",
+              "args": [],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "LIST",
+                  "name": null,
+                  "ofType": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "OBJECT",
+                      "name": "User",
+                      "ofType": null
+                    }
+                  }
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
             }
           ],
           "inputFields": null,
@@ -857,6 +969,202 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "ENUM",
+          "name": "ActivitySubjectInput",
+          "description": null,
+          "fields": null,
+          "inputFields": null,
+          "interfaces": null,
+          "enumValues": [
+            {
+              "name": "FEATURE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "VARIANT",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "EVIDENCE_ITEM",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "ASSERTION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "REVISION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "SOURCE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "SOURCE_SUGGESTION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "VARIANT_GROUP",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "MOLECULAR_PROFILE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "FLAG",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "REVISION_SET",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "possibleTypes": null
+        },
+        {
+          "kind": "ENUM",
+          "name": "ActivityTypeInput",
+          "description": null,
+          "fields": null,
+          "inputFields": null,
+          "interfaces": null,
+          "enumValues": [
+            {
+              "name": "FLAG_ENTITY",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "RESOLVE_FLAG",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "SUBMIT_EVIDENCE_ITEM",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "SUBMIT_ASSERTION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "MODERATE_ASSERTION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "MODERATE_EVIDENCE_ITEM",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "DEPRECATE_VARIANT",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "SUGGEST_SOURCE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "COMMENT",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "SUGGEST_REVISION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "UPDATE_SOURCE_SUGGESTION",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "REJECT_REVISIONS",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "ACCEPT_REVISIONS",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "CREATE_VARIANT",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "DEPRECATE_COMPLEX_MOLECULAR_PROFILE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "CREATE_COMPLEX_MOLECULAR_PROFILE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "CREATE_FEATURE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "DEPRECATE_FEATURE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "possibleTypes": null
+        },
         {
           "kind": "INPUT_OBJECT",
           "name": "AddCommentInput",
@@ -11382,6 +11690,18 @@
               "description": null,
               "isDeprecated": false,
               "deprecationReason": null
+            },
+            {
+              "name": "DEPRECATED_FEATURE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "CREATED_FEATURE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
             }
           ],
           "possibleTypes": null
@@ -26491,8 +26811,120 @@
                   "name": "userId",
                   "description": null,
                   "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
+                    "kind": "LIST",
+                    "name": null,
+                    "ofType": {
+                      "kind": "NON_NULL",
+                      "name": null,
+                      "ofType": {
+                        "kind": "SCALAR",
+                        "name": "Int",
+                        "ofType": null
+                      }
+                    }
+                  },
+                  "defaultValue": null,
+                  "isDeprecated": false,
+                  "deprecationReason": null
+                },
+                {
+                  "name": "organizationId",
+                  "description": null,
+                  "type": {
+                    "kind": "LIST",
+                    "name": null,
+                    "ofType": {
+                      "kind": "NON_NULL",
+                      "name": null,
+                      "ofType": {
+                        "kind": "SCALAR",
+                        "name": "Int",
+                        "ofType": null
+                      }
+                    }
+                  },
+                  "defaultValue": null,
+                  "isDeprecated": false,
+                  "deprecationReason": null
+                },
+                {
+                  "name": "activityType",
+                  "description": null,
+                  "type": {
+                    "kind": "LIST",
+                    "name": null,
+                    "ofType": {
+                      "kind": "NON_NULL",
+                      "name": null,
+                      "ofType": {
+                        "kind": "ENUM",
+                        "name": "ActivityTypeInput",
+                        "ofType": null
+                      }
+                    }
+                  },
+                  "defaultValue": null,
+                  "isDeprecated": false,
+                  "deprecationReason": null
+                },
+                {
+                  "name": "subjectType",
+                  "description": null,
+                  "type": {
+                    "kind": "LIST",
+                    "name": null,
+                    "ofType": {
+                      "kind": "NON_NULL",
+                      "name": null,
+                      "ofType": {
+                        "kind": "ENUM",
+                        "name": "ActivitySubjectInput",
+                        "ofType": null
+                      }
+                    }
+                  },
+                  "defaultValue": null,
+                  "isDeprecated": false,
+                  "deprecationReason": null
+                },
+                {
+                  "name": "sortBy",
+                  "description": "Sort order for the activities. Defaults to most recent.",
+                  "type": {
+                    "kind": "INPUT_OBJECT",
+                    "name": "DateSort",
+                    "ofType": null
+                  },
+                  "defaultValue": null,
+                  "isDeprecated": false,
+                  "deprecationReason": null
+                },
+                {
+                  "name": "subject",
+                  "description": null,
+                  "type": {
+                    "kind": "LIST",
+                    "name": null,
+                    "ofType": {
+                      "kind": "NON_NULL",
+                      "name": null,
+                      "ofType": {
+                        "kind": "INPUT_OBJECT",
+                        "name": "SubscribableQueryInput",
+                        "ofType": null
+                      }
+                    }
+                  },
+                  "defaultValue": null,
+                  "isDeprecated": false,
+                  "deprecationReason": null
+                },
+                {
+                  "name": "mode",
+                  "description": null,
+                  "type": {
+                    "kind": "ENUM",
+                    "name": "EventFeedMode",
                     "ofType": null
                   },
                   "defaultValue": null,
diff --git a/server/Gemfile.lock b/server/Gemfile.lock
index 29e5882d2..270db5001 100644
--- a/server/Gemfile.lock
+++ b/server/Gemfile.lock
@@ -94,14 +94,14 @@ GEM
     awesome_nested_set (3.6.0)
       activerecord (>= 4.0.0, < 7.2)
     aws-eventstream (1.3.0)
-    aws-partitions (1.883.0)
-    aws-sdk-core (3.190.3)
+    aws-partitions (1.888.0)
+    aws-sdk-core (3.191.1)
       aws-eventstream (~> 1, >= 1.3.0)
       aws-partitions (~> 1, >= 1.651.0)
       aws-sigv4 (~> 1.8)
       jmespath (~> 1, >= 1.6.1)
-    aws-sdk-kms (1.76.0)
-      aws-sdk-core (~> 3, >= 3.188.0)
+    aws-sdk-kms (1.77.0)
+      aws-sdk-core (~> 3, >= 3.191.0)
       aws-sigv4 (~> 1.1)
     aws-sdk-s3 (1.94.1)
       aws-sdk-core (~> 3, >= 3.112.0)
@@ -115,7 +115,7 @@ GEM
     benchmark (0.3.0)
     bigdecimal (3.1.6)
     bindex (0.8.1)
-    bootsnap (1.17.1)
+    bootsnap (1.18.3)
       msgpack (~> 1.2)
     builder (3.2.4)
     byebug (11.1.3)
@@ -132,11 +132,11 @@ GEM
     capistrano-rbenv (2.2.0)
       capistrano (~> 3.1)
       sshkit (~> 1.3)
-    capybara (3.39.2)
+    capybara (3.40.0)
       addressable
       matrix
       mini_mime (>= 0.1.3)
-      nokogiri (~> 1.8)
+      nokogiri (~> 1.11)
       rack (>= 1.6.0)
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
@@ -146,10 +146,10 @@ GEM
     connection_pool (2.4.1)
     crass (1.0.6)
     date (3.3.4)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     diffy (3.4.2)
     docile (1.4.0)
-    dockerfile-rails (1.6.3)
+    dockerfile-rails (1.6.5)
       rails (>= 3.0.0)
     drb (2.2.0)
       ruby2_keywords
@@ -200,9 +200,8 @@ GEM
     graphiql-rails (1.8.0)
       railties
       sprockets-rails
-    graphql (2.2.5)
-      racc (~> 1.4)
-    graphql-batch (0.5.3)
+    graphql (2.2.8)
+    graphql-batch (0.5.4)
       graphql (>= 1.12.18, < 3)
       promise.rb (~> 0.7.2)
     hashie (5.0.0)
@@ -213,7 +212,7 @@ GEM
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
     io-console (0.7.2)
-    irb (1.11.1)
+    irb (1.11.2)
       rdoc
       reline (>= 0.4.2)
     jaro_winkler (1.5.6)
@@ -253,16 +252,16 @@ GEM
     method_source (1.0.0)
     mini_magick (4.12.0)
     mini_mime (1.1.5)
-    minitest (5.21.2)
+    minitest (5.22.2)
     msgpack (1.7.2)
     multi_json (1.15.0)
     multi_xml (0.6.0)
-    multipart-post (2.3.0)
+    multipart-post (2.4.0)
     mutex_m (0.2.0)
     net-ftp (0.3.4)
       net-protocol
       time
-    net-imap (0.4.9.1)
+    net-imap (0.4.10)
       date
       net-protocol
     net-pop (0.1.2)
@@ -277,17 +276,17 @@ GEM
       net-protocol
     net-ssh (7.2.1)
     nio4r (2.7.0)
-    nokogiri (1.16.0-aarch64-linux)
+    nokogiri (1.16.2-aarch64-linux)
       racc (~> 1.4)
-    nokogiri (1.16.0-arm-linux)
+    nokogiri (1.16.2-arm-linux)
       racc (~> 1.4)
-    nokogiri (1.16.0-arm64-darwin)
+    nokogiri (1.16.2-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.0-x86-linux)
+    nokogiri (1.16.2-x86-linux)
       racc (~> 1.4)
-    nokogiri (1.16.0-x86_64-darwin)
+    nokogiri (1.16.2-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.0-x86_64-linux)
+    nokogiri (1.16.2-x86_64-linux)
       racc (~> 1.4)
     oauth2 (1.4.11)
       faraday (>= 0.17.3, < 3.0)
@@ -480,7 +479,7 @@ GEM
     solargraph-rails (1.1.0)
       activesupport
       solargraph
-    solid_errors (0.3.4)
+    solid_errors (0.3.5)
       rails (~> 7.0)
     sprockets (4.2.1)
       concurrent-ruby (~> 1.0)
@@ -529,7 +528,7 @@ GEM
     xpath (3.2.0)
       nokogiri (~> 1.8)
     yard (0.9.34)
-    zeitwerk (2.6.12)
+    zeitwerk (2.6.13)
 
 PLATFORMS
   aarch64-linux
@@ -601,4 +600,4 @@ RUBY VERSION
    ruby 3.3.0p0
 
 BUNDLED WITH
-   2.5.3
+   2.5.6
diff --git a/server/app/graphql/resolvers/activities.rb b/server/app/graphql/resolvers/activities.rb
index ddb06089d..33b4deed9 100644
--- a/server/app/graphql/resolvers/activities.rb
+++ b/server/app/graphql/resolvers/activities.rb
@@ -13,10 +13,32 @@ class Activities < GraphQL::Schema::Resolver
       Activity.order(created_at: :desc).distinct
     end
 
-    option(:user_id, type: Int) do |scope, value|
+    option(:user_id, type: [Int]) do |scope, value|
       scope.where(user_id: value)
     end
 
-  end
+    option(:organization_id, type: [Int]) do |scope, value|
+      scope.where(organization_id: value)
+    end
+
+    option(:activity_type, type: [Types::Activities::ActivityTypeInputType]) do |scope, value|
+      scope.where(type: value)
+    end
+
+    option(:subject_type, type: [Types::Activities::ActivitySubjectInputType]) do |scope, value|
+      scope.where(subject_type: value)
+    end
 
+    option(:sort_by, type: Types::DateSortType, description: 'Sort order for the activities. Defaults to most recent.') do |scope, value|
+      scope.reorder("activities.#{value.column} #{value.direction}")
+    end
+
+    option(:subject, type: [Types::Subscribable::SubscribableQueryInput]) do |scope, value|
+      scope.where(subject: value)
+    end
+
+    option(:mode, type: Types::Events::EventFeedMode) do |_, _|
+      #accesed in connection, yuck
+    end
+  end
 end
diff --git a/server/app/graphql/resolvers/top_level_events.rb b/server/app/graphql/resolvers/top_level_events.rb
index 3f25f74d8..2c7f76398 100644
--- a/server/app/graphql/resolvers/top_level_events.rb
+++ b/server/app/graphql/resolvers/top_level_events.rb
@@ -4,13 +4,6 @@
 class Resolvers::TopLevelEvents < GraphQL::Schema::Resolver
   include SearchObject.module(:graphql)
 
-  class EventFeedMode < Types::BaseEnum
-    description 'The context of an event feed, i.e. what is the root subject of the feed. This option is a no-op when accessing events via a parent.'
-    value 'USER', value: :user
-    value 'ORGANIZATION', value: :organization
-    value 'SUBJECT', value: :subject
-    value 'UNSCOPED', value: :unscoped
-  end
 
   type Types::Entities::EventType.connection_type, null: false
 
@@ -50,7 +43,7 @@ class EventFeedMode < Types::BaseEnum
     end
   end
 
-  option(:mode, type: EventFeedMode) do |_, _|
+  option(:mode, type: Types::Events::EventFeedMode) do |_, _|
     #accesed in connection, yuck
   end
 end
diff --git a/server/app/graphql/resolvers/top_level_evidence_items.rb b/server/app/graphql/resolvers/top_level_evidence_items.rb
index 10d1e7d22..69f86a9fe 100644
--- a/server/app/graphql/resolvers/top_level_evidence_items.rb
+++ b/server/app/graphql/resolvers/top_level_evidence_items.rb
@@ -12,6 +12,7 @@ class Resolvers::TopLevelEvidenceItems < GraphQL::Schema::Resolver
       .all
       .order("evidence_level ASC, rating DESC, id ASC")
       .where.not(status: 'rejected')
+      .distinct
   }
 
   option(:id, type: GraphQL::Types::Int, description: 'Exact match filtering on the ID of the evidence item.') do |scope, value|
diff --git a/server/app/graphql/types/activities/activity_subject_input_type.rb b/server/app/graphql/types/activities/activity_subject_input_type.rb
new file mode 100644
index 000000000..9ee657c28
--- /dev/null
+++ b/server/app/graphql/types/activities/activity_subject_input_type.rb
@@ -0,0 +1,15 @@
+module Types::Activities
+  class ActivitySubjectInputType < Types::BaseEnum
+    value 'FEATURE', value: 'Feature'
+    value 'VARIANT', value: 'Variant'
+    value 'EVIDENCE_ITEM', value: 'EvidenceItem'
+    value 'ASSERTION', value: 'Assertion'
+    value 'REVISION', value: 'Revision'
+    value 'SOURCE', value: 'Source'
+    value 'SOURCE_SUGGESTION', value: 'SourceSuggestion'
+    value 'VARIANT_GROUP', value: 'VariantGroup'
+    value 'MOLECULAR_PROFILE', value: 'MolecularProfile'
+    value 'FLAG', value: 'Flag'
+    value 'REVISION_SET', value: 'RevisionSet'
+  end
+end
diff --git a/server/app/graphql/types/activities/activity_type_input_type.rb b/server/app/graphql/types/activities/activity_type_input_type.rb
new file mode 100644
index 000000000..ad675b64a
--- /dev/null
+++ b/server/app/graphql/types/activities/activity_type_input_type.rb
@@ -0,0 +1,22 @@
+module Types::Activities
+  class ActivityTypeInputType < Types::BaseEnum
+    value 'FLAG_ENTITY', value: 'FlagEntityActivity'
+    value 'RESOLVE_FLAG', value: 'ResolveFlagActivity'
+    value 'SUBMIT_EVIDENCE_ITEM', value: 'SubmitEvidenceItemActivity'
+    value 'SUBMIT_ASSERTION', value: 'SubmitAssertionActivity'
+    value 'MODERATE_ASSERTION', value: 'ModerateAssertionActivity'
+    value 'MODERATE_EVIDENCE_ITEM', value: 'ModerateEvidenceItemActivity'
+    value 'DEPRECATE_VARIANT', value: 'DeprecateVariantActivity'
+    value 'SUGGEST_SOURCE', value: 'SuggestSourceActivity'
+    value 'COMMENT', value: 'CommentActivity'
+    value 'SUGGEST_REVISION', value: 'SuggestRevisionSetActivity'
+    value 'UPDATE_SOURCE_SUGGESTION', value: 'UpdateSourceSuggestionStatusActivity'
+    value 'REJECT_REVISIONS', value: 'RejectRevisionsActivity'
+    value 'ACCEPT_REVISIONS', value: 'AcceptRevisionsActivity'
+    value 'CREATE_VARIANT', value: 'CreateVariantActivity'
+    value 'DEPRECATE_COMPLEX_MOLECULAR_PROFILE', value: 'DeprecateComplexMolecularProfileActivity'
+    value 'CREATE_COMPLEX_MOLECULAR_PROFILE', value: 'CreateComplexMolecularProfileActivity'
+    value 'CREATE_FEATURE', value: 'CreateFeatureActivity'
+    value 'DEPRECATE_FEATURE', value: 'DeprecateFeatureActivity'
+  end
+end
diff --git a/server/app/graphql/types/connections/activities_connection.rb b/server/app/graphql/types/connections/activities_connection.rb
new file mode 100644
index 000000000..fdf726767
--- /dev/null
+++ b/server/app/graphql/types/connections/activities_connection.rb
@@ -0,0 +1,86 @@
+module Types::Connections
+  class ActivitiesConnection < Types::BaseConnection
+    description 'Connection type for the activity feed'
+
+    field :unique_participants, [Types::Entities::UserType], null: false,
+      description: 'List of all users that have performed an activity on the subject entity.'
+
+    field :participating_organizations, [Types::Entities::OrganizationType], null: false,
+      description: 'List of all organizations who are involved in this activity stream.'
+
+    field :unfiltered_count, Int, null: false,
+      description: 'When filtered on a subject, user, or organization, the total number of events for that subject/user/organization, irregardless of other filters.'
+
+    field :activity_types, [Types::Activities::ActivityTypeInputType], null: false,
+      description: 'List of activity types that have occured on this entity.'
+
+    field :subject_types, [Types::Activities::ActivitySubjectInputType], null: false
+
+    def unique_participants
+      #Users who's originating ids appear in the activities query,
+      #joined to activities table, limited to only activities in the activities query
+      #select the user id and the time of the newest relevant activity
+      ranked_user_ids = User.where(id: unscoped_activities_base_query.select(:user_id))
+        .joins(:activities)
+        .where(activities: { id: unscoped_activities_base_query.select(:id) } )
+        .select("users.id as user_id, max(activities.created_at) newest_activity_timestamp")
+        .group("users.id")
+
+
+      #users, ranked by most recent relevant event
+      User.joins("INNER JOIN (#{ranked_user_ids.to_sql}) ordered ON ordered.user_id = users.id")
+        .order('ordered.newest_activity_timestamp desc')
+        .limit(15)
+    end
+
+    def participating_organizations
+      Organization.where(id:
+                         unscoped_activities_base_query.select(:organization_id)
+                        ).distinct
+    end
+
+    def unfiltered_count
+      unscoped_activities_base_query.distinct.count
+    end
+
+    def activity_types
+      unscoped_activities_base_query.distinct.pluck(:type)
+    end
+
+    def subject_types
+      unscoped_activities_base_query.distinct.pluck(:subject_type)
+    end
+
+    private
+    def unscoped_activities_base_query
+      @unscoped_base ||= unscoped_activities
+    end
+
+    def unscoped_activities
+      if feed_mode = object.arguments[:mode]
+        if feed_mode == :user
+          if !object.arguments[:user_id]
+            raise GraphQL::ExecutionError, "Must provide a user id when activity feed is in User mode."
+          end
+          return Activity.where(user_id: object.arguments[:user_id])
+        elsif feed_mode == :organization
+          if !object.arguments[:organization_id]
+            raise GraphQL::ExecutionError, "Must provide an organization id when activity feed is in Organization mode."
+          end
+          return Activity.where(organization_id: object.arguments[:organization_id])
+        elsif feed_mode == :unscoped
+          Activity.all
+        #subject mode
+        else 
+          if !object.arguments[:subject]
+            raise GraphQL::ExecutionError, "Must provide a subject when activity feed is in Subject mode."
+          end
+          return Activity.where(subject: object.arguments[:subject])
+        end
+      end
+
+      #no mode,no parent, unscoped
+      return Activity.all
+    end
+  end
+end
diff --git a/server/app/graphql/types/events/event_action_type.rb b/server/app/graphql/types/events/event_action_type.rb
index 6efb42d27..25e48b3fd 100644
--- a/server/app/graphql/types/events/event_action_type.rb
+++ b/server/app/graphql/types/events/event_action_type.rb
@@ -23,6 +23,8 @@ class EventActionType < Types::BaseEnum
     value 'DEPRECATED_MOLECULAR_PROFILE', value: 'deprecated molecular profile'
     value 'VARIANT_CREATED', value: 'variant created'
     value 'COMPLEX_MOLECULAR_PROFILE_CREATED', value: 'complex molecular profile created'
+    value 'DEPRECATED_FEATURE', value: 'deprecated feature'
+    value 'CREATED_FEATURE', value: 'created feature'
   end
 end
 
diff --git a/server/app/graphql/types/events/event_feed_mode.rb b/server/app/graphql/types/events/event_feed_mode.rb
new file mode 100644
index 000000000..fab31ec57
--- /dev/null
+++ b/server/app/graphql/types/events/event_feed_mode.rb
@@ -0,0 +1,9 @@
+module Types::Events
+  class EventFeedMode < Types::BaseEnum
+    description 'The context of an event feed, i.e. what is the root subject of the feed. This option is a no-op when accessing events via a parent.'
+    value 'USER', value: :user
+    value 'ORGANIZATION', value: :organization
+    value 'SUBJECT', value: :subject
+    value 'UNSCOPED', value: :unscoped
+  end
+end
diff --git a/server/app/graphql/types/interfaces/activity_interface.rb b/server/app/graphql/types/interfaces/activity_interface.rb
index 54b9be6ec..a93ccaa59 100644
--- a/server/app/graphql/types/interfaces/activity_interface.rb
+++ b/server/app/graphql/types/interfaces/activity_interface.rb
@@ -1,6 +1,7 @@
 module Types::Interfaces
   module ActivityInterface
     include Types::BaseInterface
+    connection_type_class Types::Connections::ActivitiesConnection
 
     description 'An activity done by a curator or editor'
 
diff --git a/server/app/jobs/set_allele_registry_id_single_variant.rb b/server/app/jobs/set_allele_registry_id_single_variant.rb
index eaa760866..49149d312 100644
--- a/server/app/jobs/set_allele_registry_id_single_variant.rb
+++ b/server/app/jobs/set_allele_registry_id_single_variant.rb
@@ -21,5 +21,6 @@ def perform(variant)
         delete_allele_registry_link(old_allele_registry_id)
       end
     end
+    GenerateOpenCravatLink.perform_later(self)
   end
 end
diff --git a/server/app/models/frontend_router.rb b/server/app/models/frontend_router.rb
index f65d5be38..49a74eaea 100644
--- a/server/app/models/frontend_router.rb
+++ b/server/app/models/frontend_router.rb
@@ -8,11 +8,14 @@ def initialize(id_type, id, domain)
   end
 
   def url
-    (entity, query_field) = query_info
+    (entity, query_field, transform) = query_info
     if [entity, query_field, id].any? { |i| i.blank? }
       nil
     else
       obj = entity.find_by!(query_field => id)
+      #identity function if none defined
+      transform ||= -> {_1}
+      obj = entity.find_by!(query_field => transform.call(id))
       adaptor = "LinkAdaptors::#{obj.class.to_s.demodulize}".constantize.new(obj)
       "#{domain}#{adaptor.base_path}"
     end
@@ -22,8 +25,8 @@ def url
   def query_info
     case id_type
     when /genes?/
-      [ 
-        Feature.where(feature_instance_type: "Features::Gene"), :feature_instance_id, 
+      [
+        Feature.where(feature_instance_type: "Features::Gene"), :feature_instance_id,
       ]
     when /features?/
       [ Feature, :id, ]
@@ -36,8 +39,8 @@ def query_info
     when /entrez_id/
       [ Features::Gene, :entrez_id ]
     when /entrez_name/
-      [ 
-        Feature.where(feature_instance_type: "Features::Gene"), :name, 
+      [
+        Feature.where(feature_instance_type: "Features::Gene"), :name, -> { _1.upcase }
       ]
     when /variant_groups?/
       [ VariantGroup, :id, ]
diff --git a/server/app/models/user.rb b/server/app/models/user.rb
index d3300a289..27d2ab446 100644
--- a/server/app/models/user.rb
+++ b/server/app/models/user.rb
@@ -9,6 +9,9 @@ class User < ActiveRecord::Base
   has_many :events,
     ->() { order('events.created_at DESC') },
     foreign_key: :originating_user_id
+  has_many :activities,
+    ->() { order('activities.created_at DESC') }
+
 
   has_one :most_recent_event,
     ->() { order('created_at DESC').limit(1) },
diff --git a/server/app/models/variant.rb b/server/app/models/variant.rb
index 604a0927f..928c21ec1 100644
--- a/server/app/models/variant.rb
+++ b/server/app/models/variant.rb
@@ -102,7 +102,6 @@ def reindex_mps
 
   def on_revision_accepted
     SetAlleleRegistryIdSingleVariant.perform_later(self) if Rails.env.production?
-    GenerateOpenCravatLink.perform_later(self)
     update_single_variant_mp_aliases
   end