diff --git a/lib/components/global-search-index-provider.react.js b/lib/components/global-search-index-provider.react.js
new file mode 100644
--- /dev/null
+++ b/lib/components/global-search-index-provider.react.js
@@ -0,0 +1,42 @@
+// @flow
+
+import invariant from 'invariant';
+import * as React from 'react';
+
+import { useThreadSearchIndex } from '../selectors/nav-selectors.js';
+import SearchIndex from '../shared/search-index.js';
+import { values } from '../utils/objects.js';
+import { useSelector } from '../utils/redux-utils.js';
+
+type GlobalSearchIndexContextType = {
+  +searchIndex: SearchIndex,
+};
+
+const GlobalSearchIndexContext: React.Context<?GlobalSearchIndexContextType> =
+  React.createContext();
+
+type Props = {
+  +children: React.Node,
+};
+function GlobalSearchIndexProvider(props: Props): React.Node {
+  const threadInfos = useSelector(state => state.threadStore.threadInfos);
+  const threadInfosArray = React.useMemo(
+    () => values(threadInfos),
+    [threadInfos],
+  );
+  const searchIndex = useThreadSearchIndex(threadInfosArray);
+  const context = React.useMemo(() => ({ searchIndex }), [searchIndex]);
+  return (
+    <GlobalSearchIndexContext.Provider value={context}>
+      {props.children}
+    </GlobalSearchIndexContext.Provider>
+  );
+}
+
+function useGlobalThreadSearchIndex(): SearchIndex {
+  const globalSearchIndexContext = React.useContext(GlobalSearchIndexContext);
+  invariant(globalSearchIndexContext, 'globalSearchIndexContext should be set');
+  return globalSearchIndexContext.searchIndex;
+}
+
+export { GlobalSearchIndexProvider, useGlobalThreadSearchIndex };
diff --git a/lib/hooks/child-threads.js b/lib/hooks/child-threads.js
--- a/lib/hooks/child-threads.js
+++ b/lib/hooks/child-threads.js
@@ -6,11 +6,11 @@
   fetchSingleMostRecentMessagesFromThreadsActionTypes,
   useFetchSingleMostRecentMessagesFromThreads,
 } from '../actions/message-actions.js';
+import { useGlobalThreadSearchIndex } from '../components/global-search-index-provider.react.js';
 import {
   type ChatThreadItem,
   useFilteredChatListData,
 } from '../selectors/chat-selectors.js';
-import { useGlobalThreadSearchIndex } from '../selectors/nav-selectors.js';
 import { childThreadInfos } from '../selectors/thread-selectors.js';
 import { useThreadsInChatList } from '../shared/thread-utils.js';
 import threadWatcher from '../shared/thread-watcher.js';
diff --git a/lib/hooks/thread-search-hooks.js b/lib/hooks/thread-search-hooks.js
--- a/lib/hooks/thread-search-hooks.js
+++ b/lib/hooks/thread-search-hooks.js
@@ -4,8 +4,8 @@
 
 import { useUsersSupportThickThreads } from './user-identities-hooks.js';
 import { searchUsers as searchUserCall } from '../actions/user-actions.js';
+import { useGlobalThreadSearchIndex } from '../components/global-search-index-provider.react.js';
 import { useLegacyAshoatKeyserverCall } from '../keyserver-conn/legacy-keyserver-call.js';
-import { useGlobalThreadSearchIndex } from '../selectors/nav-selectors.js';
 import { usersWithPersonalThreadSelector } from '../selectors/user-selectors.js';
 import {
   useForwardLookupSearchText,
diff --git a/lib/selectors/nav-selectors.js b/lib/selectors/nav-selectors.js
--- a/lib/selectors/nav-selectors.js
+++ b/lib/selectors/nav-selectors.js
@@ -21,7 +21,6 @@
 import { threadTypeIsPrivate } from '../types/thread-types-enum.js';
 import type { UserInfo } from '../types/user-types.js';
 import { getConfig } from '../utils/config.js';
-import { values } from '../utils/objects.js';
 import { useSelector } from '../utils/redux-utils.js';
 
 function timeUntilCalendarRangeExpiration(
@@ -192,19 +191,9 @@
   }, [threadInfos, viewerID, userInfos, memberMap]);
 }
 
-function useGlobalThreadSearchIndex(): SearchIndex {
-  const threadInfos = useSelector(state => state.threadStore.threadInfos);
-  const threadInfosArray = React.useMemo(
-    () => values(threadInfos),
-    [threadInfos],
-  );
-  return useThreadSearchIndex(threadInfosArray);
-}
-
 export {
   timeUntilCalendarRangeExpiration,
   currentCalendarQuery,
   useUserSearchIndex,
   useThreadSearchIndex,
-  useGlobalThreadSearchIndex,
 };
diff --git a/native/calendar/thread-picker-modal.react.js b/native/calendar/thread-picker-modal.react.js
--- a/native/calendar/thread-picker-modal.react.js
+++ b/native/calendar/thread-picker-modal.react.js
@@ -8,7 +8,7 @@
   createLocalEntry,
   createLocalEntryActionType,
 } from 'lib/actions/entry-actions.js';
-import { useGlobalThreadSearchIndex } from 'lib/selectors/nav-selectors.js';
+import { useGlobalThreadSearchIndex } from 'lib/components/global-search-index-provider.react.js';
 import { useOnScreenEntryEditableThreadInfos } from 'lib/shared/thread-utils.js';
 import { useDispatch } from 'lib/utils/redux-utils.js';
 
diff --git a/native/root.react.js b/native/root.react.js
--- a/native/root.react.js
+++ b/native/root.react.js
@@ -27,6 +27,7 @@
 import { EditUserAvatarProvider } from 'lib/components/edit-user-avatar-provider.react.js';
 import { ENSCacheProvider } from 'lib/components/ens-cache-provider.react.js';
 import { FarcasterDataHandler } from 'lib/components/farcaster-data-handler.react.js';
+import { GlobalSearchIndexProvider } from 'lib/components/global-search-index-provider.react.js';
 import IntegrityHandler from 'lib/components/integrity-handler.react.js';
 import { MediaCacheProvider } from 'lib/components/media-cache-provider.react.js';
 import { NeynarClientProvider } from 'lib/components/neynar-client-provider.react.js';
@@ -313,9 +314,11 @@
           <ChatContextProvider>
             <DeepLinksContextProvider>
               <ChatMentionContextProvider>
-                <NUXTipsContextProvider>
-                  <RootNavigator />
-                </NUXTipsContextProvider>
+                <GlobalSearchIndexProvider>
+                  <NUXTipsContextProvider>
+                    <RootNavigator />
+                  </NUXTipsContextProvider>
+                </GlobalSearchIndexProvider>
               </ChatMentionContextProvider>
             </DeepLinksContextProvider>
           </ChatContextProvider>
diff --git a/web/app.react.js b/web/app.react.js
--- a/web/app.react.js
+++ b/web/app.react.js
@@ -16,6 +16,7 @@
 import { ChatMentionContextProvider } from 'lib/components/chat-mention-provider.react.js';
 import { EditUserAvatarProvider } from 'lib/components/edit-user-avatar-provider.react.js';
 import { FarcasterDataHandler } from 'lib/components/farcaster-data-handler.react.js';
+import { GlobalSearchIndexProvider } from 'lib/components/global-search-index-provider.react.js';
 import {
   ModalProvider,
   useModalContext,
@@ -245,24 +246,26 @@
             <TooltipProvider>
               <MessageSearchStateProvider>
                 <ChatMentionContextProvider>
-                  <FocusHandler />
-                  <VisibilityHandler />
-                  <PolicyAcknowledgmentHandler />
-                  <PushNotificationsHandler />
-                  <InviteLinkHandler />
-                  <InviteLinksRefresher />
-                  <CommunitiesRefresher />
-                  <MinVersionHandler />
-                  <PlatformDetailsSynchronizer />
-                  <LogOutIfMissingCSATHandler />
-                  <UserInfosHandler />
-                  <TunnelbrokerDeviceTokenHandler />
-                  <FarcasterDataHandler />
-                  <AutoJoinCommunityHandler />
-                  <SyncCommunityStoreHandler />
-                  <DMActivityHandler />
-                  <HoldersHandler />
-                  {content}
+                  <GlobalSearchIndexProvider>
+                    <FocusHandler />
+                    <VisibilityHandler />
+                    <PolicyAcknowledgmentHandler />
+                    <PushNotificationsHandler />
+                    <InviteLinkHandler />
+                    <InviteLinksRefresher />
+                    <CommunitiesRefresher />
+                    <MinVersionHandler />
+                    <PlatformDetailsSynchronizer />
+                    <LogOutIfMissingCSATHandler />
+                    <UserInfosHandler />
+                    <TunnelbrokerDeviceTokenHandler />
+                    <FarcasterDataHandler />
+                    <AutoJoinCommunityHandler />
+                    <SyncCommunityStoreHandler />
+                    <DMActivityHandler />
+                    <HoldersHandler />
+                    {content}
+                  </GlobalSearchIndexProvider>
                 </ChatMentionContextProvider>
               </MessageSearchStateProvider>
             </TooltipProvider>
diff --git a/web/modals/threads/thread-picker-modal.react.js b/web/modals/threads/thread-picker-modal.react.js
--- a/web/modals/threads/thread-picker-modal.react.js
+++ b/web/modals/threads/thread-picker-modal.react.js
@@ -3,7 +3,7 @@
 import invariant from 'invariant';
 import * as React from 'react';
 
-import { useGlobalThreadSearchIndex } from 'lib/selectors/nav-selectors.js';
+import { useGlobalThreadSearchIndex } from 'lib/components/global-search-index-provider.react.js';
 import {
   useOnScreenEntryEditableThreadInfos,
   reorderThreadSearchResults,