diff --git a/packages/gatsby/src/utils/parcel/compile-gatsby-files.ts b/packages/gatsby/src/utils/parcel/compile-gatsby-files.ts
index 94fe33181a516..c1d8dce022e71 100644
--- a/packages/gatsby/src/utils/parcel/compile-gatsby-files.ts
+++ b/packages/gatsby/src/utils/parcel/compile-gatsby-files.ts
@@ -2,6 +2,7 @@ import { Parcel } from "@parcel/core"
 import type { Diagnostic } from "@parcel/diagnostic"
 import reporter from "gatsby-cli/lib/reporter"
 import { ensureDir, emptyDir, existsSync } from "fs-extra"
+import telemetry from "gatsby-telemetry"
 
 export const COMPILED_CACHE_DIR = `.cache/compiled`
 export const PARCEL_CACHE_DIR = `.cache/.parcel-cache`
@@ -46,7 +47,24 @@ export async function compileGatsbyFiles(siteRoot: string): Promise<void> {
     const distDir = `${siteRoot}/${COMPILED_CACHE_DIR}`
     await ensureDir(distDir)
     await emptyDir(distDir)
-    await parcel.run()
+    const { bundleGraph } = await parcel.run()
+
+    if (telemetry.isTrackingEnabled()) {
+      const bundles = bundleGraph.getBundles()
+
+      if (bundles.length === 0) return
+
+      let compiledTSFilesCount = 0
+      for (const bundle of bundles) {
+        if (bundle?.getMainEntry()?.filePath?.endsWith(`.ts`)) {
+          compiledTSFilesCount = compiledTSFilesCount + 1
+        }
+      }
+      telemetry.trackCli(`PARCEL_COMPILATION_END`, {
+        valueInteger: compiledTSFilesCount,
+        name: `count of compiled ts files`,
+      })
+    }
   } catch (error) {
     if (error.diagnostics) {
       handleErrors(error.diagnostics)
diff --git a/packages/gatsby/src/utils/worker/__tests__/config.ts b/packages/gatsby/src/utils/worker/__tests__/config.ts
index efbea0a127542..70de779914467 100644
--- a/packages/gatsby/src/utils/worker/__tests__/config.ts
+++ b/packages/gatsby/src/utils/worker/__tests__/config.ts
@@ -9,6 +9,7 @@ jest.mock(`gatsby-telemetry`, () => {
   return {
     decorateEvent: jest.fn(),
     trackCli: jest.fn(),
+    isTrackingEnabled: jest.fn(),
   }
 })
 
diff --git a/packages/gatsby/src/utils/worker/__tests__/datastore.ts b/packages/gatsby/src/utils/worker/__tests__/datastore.ts
index b215d0ae53b29..e1a5ccb04d90d 100644
--- a/packages/gatsby/src/utils/worker/__tests__/datastore.ts
+++ b/packages/gatsby/src/utils/worker/__tests__/datastore.ts
@@ -12,6 +12,7 @@ jest.mock(`gatsby-telemetry`, () => {
     decorateEvent: jest.fn(),
     trackError: jest.fn(),
     trackCli: jest.fn(),
+    isTrackingEnabled: jest.fn(),
   }
 })
 
diff --git a/packages/gatsby/src/utils/worker/__tests__/jobs.ts b/packages/gatsby/src/utils/worker/__tests__/jobs.ts
index 1e5b6ca1385e0..3e4fefe7865eb 100644
--- a/packages/gatsby/src/utils/worker/__tests__/jobs.ts
+++ b/packages/gatsby/src/utils/worker/__tests__/jobs.ts
@@ -11,6 +11,7 @@ jest.mock(`gatsby-telemetry`, () => {
   return {
     decorateEvent: jest.fn(),
     trackCli: jest.fn(),
+    isTrackingEnabled: jest.fn(),
   }
 })
 
diff --git a/packages/gatsby/src/utils/worker/__tests__/queries.ts b/packages/gatsby/src/utils/worker/__tests__/queries.ts
index f76b6f6d842c0..ae813de156b55 100644
--- a/packages/gatsby/src/utils/worker/__tests__/queries.ts
+++ b/packages/gatsby/src/utils/worker/__tests__/queries.ts
@@ -51,6 +51,7 @@ jest.mock(`gatsby-telemetry`, () => {
     decorateEvent: jest.fn(),
     trackError: jest.fn(),
     trackCli: jest.fn(),
+    isTrackingEnabled: jest.fn(),
   }
 })
 
diff --git a/packages/gatsby/src/utils/worker/__tests__/schema.ts b/packages/gatsby/src/utils/worker/__tests__/schema.ts
index 2ea7cb1076510..ccc7f0b445c1d 100644
--- a/packages/gatsby/src/utils/worker/__tests__/schema.ts
+++ b/packages/gatsby/src/utils/worker/__tests__/schema.ts
@@ -44,6 +44,7 @@ jest.mock(`gatsby-telemetry`, () => {
     decorateEvent: jest.fn(),
     trackError: jest.fn(),
     trackCli: jest.fn(),
+    isTrackingEnabled: jest.fn(),
   }
 })
 
diff --git a/packages/gatsby/src/utils/worker/__tests__/share-state.ts b/packages/gatsby/src/utils/worker/__tests__/share-state.ts
index 58b8805653427..e1cbfd712b9ee 100644
--- a/packages/gatsby/src/utils/worker/__tests__/share-state.ts
+++ b/packages/gatsby/src/utils/worker/__tests__/share-state.ts
@@ -12,6 +12,7 @@ jest.mock(`gatsby-telemetry`, () => {
     decorateEvent: jest.fn(),
     trackError: jest.fn(),
     trackCli: jest.fn(),
+    isTrackingEnabled: jest.fn(),
   }
 })