diff --git a/main.py b/main.py
index 8cf9a788..bf695d55 100644
--- a/main.py
+++ b/main.py
@@ -32,8 +32,8 @@ async def start_up():
 	git_task = asyncio.create_task(GitTask.git_task_worker())
 	shouts_cache_task = asyncio.create_task(ShoutsCache.worker())
 	view_storage_task = asyncio.create_task(ShoutViewStorage.worker())
-	topic_stat_task = asyncio.create_task(TopicStat.worker())
 	shout_author_task = asyncio.create_task(ShoutAuthorStorage.worker())
+	topic_stat_task = asyncio.create_task(TopicStat.worker())
 
 async def shutdown():
 	await redis.disconnect()
diff --git a/orm/shout.py b/orm/shout.py
index 6ee56656..2a754765 100644
--- a/orm/shout.py
+++ b/orm/shout.py
@@ -3,7 +3,7 @@ from datetime import datetime, timedelta
 from sqlalchemy import Table, Column, Integer, String, ForeignKey, DateTime, Boolean
 from sqlalchemy.orm import relationship
 from sqlalchemy.orm.attributes import flag_modified
-from orm import Permission, User, Topic
+from orm import Permission, User, Topic, TopicSubscription
 from orm.comment import Comment
 from orm.base import Base, local_session
 
@@ -148,6 +148,8 @@ class ShoutViewStorage:
 
 class TopicStat:
 	shouts_by_topic = {}
+	authors_by_topic = {}
+	subs_by_topic = {}
 	lock = asyncio.Lock()
 
 	period = 30*60 #sec
@@ -164,6 +166,21 @@ class TopicStat:
 			else:
 				self.shouts_by_topic[topic] = [shout]
 
+			authors = await ShoutAuthorStorage.get_authors(shout)
+			if topic in self.authors_by_topic:
+				self.authors_by_topic[topic].update(authors)
+			else:
+				self.authors_by_topic[topic] = set(authors)
+
+		subs = session.query(TopicSubscription)
+		for sub in subs:
+			topic = sub.topic
+			user = sub.user
+			if topic in self.subs_by_topic:
+				self.subs_by_topic[topic].append(user)
+			else:
+				self.subs_by_topic[topic] = [user]
+
 	async def get_shouts(topic):
 		self = TopicStat
 		async with self.lock:
@@ -174,7 +191,13 @@ class TopicStat:
 		self = TopicStat
 		async with self.lock:
 			shouts = self.shouts_by_topic.get(topic, [])
-		stat = { "shouts" : len(shouts) }
+			subs = self.subs_by_topic.get(topic, [])
+			authors = self.authors_by_topic.get(topic, set())
+		stat = { 
+			"shouts" : len(shouts),
+			"authors" : len(authors),
+			"subscriptions" : len(subs)
+		}
 
 		views = 0
 		for shout in shouts:
diff --git a/resolvers/topics.py b/resolvers/topics.py
index f551a1b0..0eaaa678 100644
--- a/resolvers/topics.py
+++ b/resolvers/topics.py
@@ -32,17 +32,6 @@ async def topics_by_author(_, info, author):
 			slugs.update([topic.slug for topic in shout.topics])
 	return await TopicStorage.get_topics(slugs)
 
-@query.field("getTopicAuthors")
-async def topics_by_author(_, info, slug, count, page):
-	shouts = await TopicStat.get_shouts(slug)
-	authors = set()
-	for shout in shouts:
-		authors.update(await ShoutAuthorStorage.get_authors(shout))
-	authors = list(authors)
-	authors.sort() #TODO sort by username
-	authors = authors[count * page : count * (page + 1) ]
-	return [await UserStorage.get_user(author) for author in authors]
-
 @mutation.field("createTopic")
 @login_required
 async def create_topic(_, info, input):
diff --git a/schema.graphql b/schema.graphql
index 6d369201..68abf97e 100644
--- a/schema.graphql
+++ b/schema.graphql
@@ -170,7 +170,6 @@ type Query {
 	topicsBySlugs(slugs: [String]): [Topic]!
 	topicsByCommunity(community: String!): [Topic]!
 	topicsByAuthor(author: String!): [Topic]!
-	getTopicAuthors(slug: String!, count: Int!, page: Int!): [User]!
 
 	# getOnlineUsers: [User!]!
 
@@ -335,8 +334,8 @@ type Community {
 type TopicStat {
 	shouts: Int!
 	views: Int!
-	subscriptions: Int
-	authors: Int
+	subscriptions: Int!
+	authors: Int!
 }
 
 type Topic {