Advanced Micro Devices's SEC filing (Form 8-K) moved AMD +0.65%
AMD moved -1.37% in five minutes and +0.65% by market close — about 0.9× Advanced Micro Devices's median close-day move.
· SEC EDGAR · SEC filing · Form 8-K · Realized reaction, point-in-time, zero look-ahead.
Form 8-K ADVANCED MICRO DEVICES For: Oct 27
Via SEC EDGAR
How AMD reacted after the announcement.
| Horizon | Reaction | AMD median |
|---|---|---|
| 30 sec | -0.70% | — |
| 1 min | -1.23% | — |
| 5 min | -1.37% | — |
| 10 min | -1.04% | — |
| 30 min | -1.42% | +0.06% |
| 60 min | -2.08% | — |
| 90 min | -1.24% | — |
| 120 min | -1.51% | — |
| to close | +0.65% | +0.70% |
- +1%
- never traded
- +2%
- never traded
- +3%
- never traded
- +5%
- never traded
- -1%
- 1 min
- -2%
- 37 min
- -3%
- 52 min
- -5%
- never traded
A hatched rung is a threshold the price never touched inside the measured window — not a missing measurement. Most news never moves a large-cap by 5% either way, so a mostly empty ladder is the finding, not a gap in the data.
| Held for | Return |
|---|---|
| D+1 | +0.25% |
| D+2 | -0.39% |
| D+3 | +2.05% |
| D+4 | -1.62% |
| D+5 | -1.12% |
| 1M | -16.98% |
| 3M | -2.98% |
| 6M | +34.27% |
| 12M |
Each row is measured from the price at the news to that horizon independently, so the ladder is not cumulative and a later row can sit above an earlier one. “Available” is a date, not a gap: that horizon has not elapsed yet for this event, and it is computed from the event’s own timestamp rather than from the data. An em dash is the other case — the horizon passed and no return was recorded.
Five minutes after the news, AMD had moved -1.37%; by the close it stood at +0.65% — the two readings disagree in direction, and the early move did not survive to the close.
Impact: Positive. Reaction = percent move vs. the price at the news timestamp. Sources below.
AMD’s news landed in the pre-market window; the main session closed +0.65%.
- Mainprior session
- After-hours4:00 – 8:00 PM
- Overnightno tape
- Pre-market4:00 – 9:30 AM
- Main session9:30 AM – 4:00 PM
Segment widths are fixed, so two events on different days sit in comparable places. Hatched segments are real elapsed time with no tape to measure — the overnight halt is not a gap in the data.
| Window | What it answers | Anchor price | Result | vs S&P 500 |
|---|---|---|---|---|
| All | From the news to the first main-session close, across every session in between. | 259.10re-anchored to the first print after the news | +0.25% | — |
| After-hours | The move between the closing bell and the overnight halt. | — | not measured | — |
| Pre-market | The move between the pre-market open and the opening bell. | — | not measured | — |
| Main | The move inside the regular session, from the news to the close. | 258.00the price at the news | +0.65% | +0.28% |
The main-session result is measured upstream against the price at the news; the all-sessions result is computed here from its own anchor and close, so the two can differ in the last decimal. The adjusted column subtracts the S&P 500’s move over the same main-session span — there is no index anchor for the all-sessions span, so that cell stays empty rather than borrowing this one. After-hours and pre-market are measured upstream but populate on a small minority of events, so this page does not request them. Those rows are unmeasured, not empty.
The same event measured across every session8
| Horizon | Reaction |
|---|---|
| 30 sec | -0.03% |
| 1 min | +0.01% |
| 5 min | -0.04% |
| 10 min | +0.01% |
| 30 min | -0.26% |
| 60 min | -2.00% |
| 90 min | -3.18% |
| 120 min | -2.38% |
Where this AMD event came from, and what the tape did with it.
Advanced Micro Devices filed Form 8-K with the SEC on Oct 27, 2025. It was one of 3 Advanced Micro Devices headlines News Quantified labeled that day, so its measurement window overlaps with the others on a shared tape. The same session also carried Advanced Micro Devices's "AMD Completes Divestiture of ZT Systems Data Center Infrastructure…" and 1 other Advanced Micro Devices headline, each measured on its own clock.
Against the price at the news timestamp, AMD moved -1.37% after five minutes and +0.65% by the close — about 0.9× Advanced Micro Devices's median close-day move of +0.70% across 2,000+ events. Because several releases shared that day, their measurement windows overlap and no single headline cleanly owns the move.
This is the alert you’d have received.
Form 8-K ADVANCED MICRO DEVICES For: Oct 27
Track AMD and you’ll get one email like this the next time it moves on news — the headline, the measured reaction, and how it compares to AMD’s baseline. Nothing else.
Set up AMD alerts →How this compares to AMD’s usual reaction.
Across 2,000+ labeled events, AMD’s median 30-minute reaction to all news is +0.06% (52% up); by the close it is +0.70%.
| Middle 50% of AMD reactions | -0.98% to +0.80% |
|---|---|
| Median reaction (30-min) | +0.06% |
| This event | -1.42% |
| Measured reactions | 2,000+ |
Half of all Advanced Micro Devices news events land between -0.98% and +0.80% at 30 minutes; this one is a single draw from that distribution.
You just saw one reaction. There are 26M+ more.
See the full AMD reaction history →AMD’s session ranged -3.18% to +0.94% against the price at the news.
50.6M shares against a 30-day average of 50.7M.
What the average share actually traded at across the session, rather than at any one print.
The close moved +0.65% against a 20-day average true range of 12.32. AMD carries no market-cap or price-to-earnings figure on this record, and no short interest, so none is shown.
Email me when AMD moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AMD's baseline. Nothing else.
How comparable AMD events have landed.
Across 5 other recent Advanced Micro Devices SEC filing events, the median close-day reaction was -0.88%. Each is measured the same way, from its own news timestamp.
| Date | Headline | 5-min | To close |
|---|---|---|---|
| Form 8-K ADVANCED MICRO DEVICES For: Sep 26 | -1.15% | -1.45% | |
| Form 8-K ADVANCED MICRO DEVICES For: Aug 17 | +1.74% | +0.62% | |
| Form 8-K ADVANCED MICRO DEVICES For: Aug 13 | +0.07% | -0.88% | |
| Form 13F-HR ADVANCED MICRO DEVICES For: Jun 30 | -0.53% | -1.55% | |
| Form S-3ASR ADVANCED MICRO DEVICES | +1.05% | +0.04% |
8 more AMD events, each measured the same way.
Recent AMD events, each with its measured reaction8
That same day, across the market8
Same measurement, same clock, different names — each headline measured from its own news timestamp, point-in-time.
Peer tickers, measured the same way4
Every US ticker is measured the same way, from its own news timestamp. Browse all tickers →
AMD carried 2 other records that day.
Each was measured the same way, from its own timestamp.
| Record | Event | 5-min | To close |
|---|---|---|---|
| AMD Completes Divestiture of ZT Systems Data Center Infrastructure Manufacturing Business to Sanmina | Press release | -1.37% | +0.65% |
| AMD Powers U.S. Sovereign AI Factory Supercomputers, Accelerating an Open American AI Stack | Press release | -0.34% | +1.00% |
How the numbers are made.
How was AMD's -1.37% reaction measured?
From the news timestamp, not the trading day: News Quantified takes the last trade before this SEC filing (Form 8-K) as the base price and measures the move five minutes of trading later — point-in-time, zero look-ahead. The same clock produced the +0.65% to-close figure.
What is Advanced Micro Devices's median reaction, and how does this event compare?
Advanced Micro Devices's median is drawn from 2,000+ labeled events; at 30 minutes it sits at +0.06%, and +0.70% by the close. This event's move is one draw from that distribution — ordinary or outlier, the chart's median ticks show which.
3 Advanced Micro Devices headlines shared Oct 27, 2025. Whose reaction is this?
Each of the 3 same-day Advanced Micro Devices events is measured from its own timestamp, but their windows overlap on one tape, so we show the cluster rather than pretending a single headline owns the move.
Does +0.65% predict Advanced Micro Devices's next reaction?
No. +0.65% is a realized fact about Oct 27, 2025, not a forecast. Past reactions describe a distribution; they say nothing certain about any future move.
How to cite this reaction.
News Quantified. "Form 8-K ADVANCED MICRO DEVICES For: Oct 27." AMD realized price reaction, Oct 27, 2025. Retrieved from https://newsquantified.com/tickers/amd/news/form-8-k-advanced-micro-devices-for-oct-27-2025-10-27
Canonical URL: https://newsquantified.com/tickers/amd/news/form-8-k-advanced-micro-devices-for-oct-27-2025-10-27
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