Why did Qualcomm stock fall 9.5% on 5 Nov 2026?

Quantooo Lab · 2026-11-06

How much did Qualcomm move?

Qualcomm Inc (QCOM) fell 9.49% on Thu 5 Nov 2026, the third-biggest fall in the S&P 100 that day. The S&P 500 fell 4.41%, and 9 of the 98 S&P 100 companies we cover rose.

It was its biggest one-day fall since 30 Oct 2026.

Was trading busier than usual?

Trading volume was 3.5 times its 20-day average, busier than usual. Over the past month, to this close, the stock moved −13.41%, while the S&P 500 moved −5.92%.

Did results or filings come out?

In the 3 days to the close, the company filed with the SEC: its annual report (form 10-K) on 4 Nov and a form 8-K on 4 Nov about its results (earnings release).

How did its Quantooo score change?

Our score stayed at 18 out of 100, the same as on 4 Nov (band: below average). Its parts: trend 28 → 28, stability 1 → 1, fundamentals 3 → 3, market backdrop 54 → 54, news tone 3 → 7. The biggest change: news coverage turned more positive (+4).

A big one-day move shifts the trend and stability parts by itself, because both are worked out from prices. Every step of the calculation: QCOM stock page.

So why did it move?

Our data can't say. It shows what was published and what changed in the numbers, but a reason needs a source, and a move can also come from news, analyst views or trading across the market that our data doesn't cover.

What does it mean?

A day's moves describe the past. They don't tell you where prices go next, and our own tests found our scores have not reliably picked future winners.

See the whole day: US stock market today, 5 Nov.

Educational, not investment advice.