diff --git a/lib/addons/prototypes/analytics.js b/lib/addons/prototypes/analytics.js
index fbdf4f1e..db300ae3 100644
--- a/lib/addons/prototypes/analytics.js
+++ b/lib/addons/prototypes/analytics.js
@@ -274,7 +274,7 @@ class OptablePrebidAnalytics {
         optableMatchers: Array.from(oMatchersSet),
         optableSources: Array.from(oSourcesSet),
         liveintentEIDs: Array.from(lSourcesSet),
-        missed,
+        missed: missed && oSourcesSet.size === 0,
         url: `${window.location.hostname}${window.location.pathname}`,
         tenant: this.config.tenant,
         optableWrapperVersion: SDK_WRAPPER_VERSION, // eslint-disable-line no-undef
diff --git a/lib/addons/prototypes/analytics.missed.test.js b/lib/addons/prototypes/analytics.missed.test.js
new file mode 100644
index 00000000..6dd548dd
--- /dev/null
+++ b/lib/addons/prototypes/analytics.missed.test.js
@@ -0,0 +1,41 @@
+import OptablePrebidAnalytics from "./analytics";
+
+global.SDK_WRAPPER_VERSION = "1.0.0-test";
+
+function bidderRequest(bidderCode, sources) {
+  return {
+    bidderCode,
+    bidderRequestId: `br-${bidderCode}`,
+    ortb2: {
+      user: { ext: { eids: sources.map((source) => ({ source, inserter: "optable.co", uids: [{ id: "x" }] })) } },
+    },
+    bids: [{ bidId: `bid-${bidderCode}`, adUnitCode: "slot-1" }],
+  };
+}
+
+async function run(sources, missed) {
+  const witness = jest.fn().mockResolvedValue(undefined);
+  const analytics = new OptablePrebidAnalytics({ witness }, { analytics: true, tenant: "t" });
+  await analytics.trackAuctionEnd({ auctionId: "a-1", bidderRequests: [bidderRequest("a", sources)] }, missed);
+  return JSON.parse(witness.mock.calls[0][1].auction);
+}
+
+beforeEach(() => {
+  window.optable = {};
+});
+
+describe("missed", () => {
+  test("false when the hook attached before the auction", async () => {
+    expect((await run([], false)).missed).toBe(false);
+  });
+
+  test("false when the hook attached late but Optable sources are present", async () => {
+    const p = await run(["uidapi.com"], true);
+    expect(p.optableSources).toEqual(["uidapi.com"]);
+    expect(p.missed).toBe(false);
+  });
+
+  test("true when the hook attached late and no Optable sources are present", async () => {
+    expect((await run([], true)).missed).toBe(true);
+  });
+});