Amazon's SEC filing (Form 13F-HR) moved AMZN +0.49%
AMZN moved -1.03% in five minutes and +0.49% by market close — about 13.6× Amazon's median close-day move.
· SEC EDGAR · SEC filing · Form 13F-HR · Realized reaction, point-in-time, zero look-ahead.
Form 13F-HR AMAZON COM INC For: Sep 30
Via SEC EDGAR
How AMZN reacted after the announcement.
| Horizon | Reaction | AMZN median |
|---|---|---|
| 30 sec | -0.40% | — |
| 1 min | -0.58% | — |
| 5 min | -1.03% | — |
| 10 min | -0.68% | — |
| 30 min | -0.35% | -0.11% |
| 60 min | -0.13% | — |
| 90 min | -0.35% | — |
| 120 min | +0.03% | — |
| to close | +0.49% | -0.04% |
- +1%
- never traded
- +2%
- never traded
- +3%
- never traded
- +5%
- never traded
- -1%
- 3 min
- -2%
- never traded
- -3%
- never traded
- -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 | +0.32% |
| D+2 | -2.55% |
| D+3 | -2.00% |
| D+4 | -0.40% |
| D+5 | -0.12% |
| 1M | -8.14% |
| 3M | -6.58% |
| 6M | +9.08% |
| 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, AMZN had moved -1.03%; by the close it stood at +0.49% — the two readings disagree in direction, and the early move did not survive to the close.
Impact: Neutral. Reaction = percent move vs. the price at the news timestamp. Sources below.
AMZN’s news landed in the after-hours window; the main session closed +0.49%.
- 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. This event carries no intraday receipt time, so it is not pinned to a minute.
| 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. | 249.40re-anchored to the first print after the news | +0.32% | — |
| 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. | 248.98the price at the news | +0.49% | +0.11% |
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 | -0.01% |
| 1 min | -0.04% |
| 5 min | -0.08% |
| 10 min | -0.20% |
| 30 min | +0.16% |
| 60 min | +0.01% |
| 90 min | -0.04% |
| 120 min | -0.20% |
Where this AMZN event came from, and what the tape did with it.
Amazon filed Form 13F-HR with the SEC on Nov 4, 2025. It was the only Amazon headline News Quantified labeled that day.
Against the price at the news timestamp, AMZN moved -1.03% after five minutes and +0.49% by the close — about 13.6× Amazon's median close-day move of -0.04% across 2,000+ events.
This is the alert you’d have received.
Form 13F-HR AMAZON COM INC For: Sep 30
Track AMZN 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 AMZN’s baseline. Nothing else.
Set up AMZN alerts →How this compares to AMZN’s usual reaction.
Across 2,000+ labeled events, AMZN’s median 30-minute reaction to all news is -0.11% (46% up); by the close it is -0.04%.
| Middle 50% of AMZN reactions | -0.46% to +0.47% |
|---|---|
| Median reaction (30-min) | -0.11% |
| This event | -0.35% |
| Measured reactions | 2,000+ |
Half of all Amazon news events land between -0.46% and +0.47% at 30 minutes; this one is a single draw from that distribution.
You just saw one reaction. There are 26M+ more.
See the full AMZN reaction history →AMZN’s session ranged -1.13% to +0.81% against the price at the news.
26.7M shares against a 30-day average of 34.6M.
What the average share actually traded at across the session, rather than at any one print.
The close moved +0.49% against a 20-day average true range of 7.97. AMZN carries no market-cap or price-to-earnings figure on this record, and no short interest, so none is shown.
Email me when AMZN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AMZN's baseline. Nothing else.
How comparable AMZN events have landed.
Across 5 other recent Amazon SEC filing events, the median close-day reaction was +0.68%. Each is measured the same way, from its own news timestamp.
| Date | Headline | 5-min | To close |
|---|---|---|---|
| Form 8-A12B AMAZON COM INC | +0.60% | +1.46% | |
| Form CERT AMAZON COM INC | +0.62% | +0.46% | |
| Form 8-K AMAZON COM INC For: Sep 14 | -0.03% | -1.54% | |
| Form 8-K AMAZON COM INC For: Sep 08 | +0.44% | +0.68% | |
| Form EFFECT AMAZON COM INC | -0.38% | +1.95% |
8 more AMZN events, each measured the same way.
Recent AMZN events, each with its measured reaction8
That same day, across the market8
| Ticker | Headline | 5-min | To close |
|---|---|---|---|
| TSLA | Form DEFA14A Tesla, Inc. | -1.05% | +2.22% |
| JPM | Form IRANNOTICE JPMORGAN CHASE & CO | -0.28% | +0.67% |
| JPM | JPMorganChase Files Form 10-Q for the Quarter Ended September 30, 2025 | -0.28% | +0.67% |
| JPM | Form 10-Q JPMORGAN CHASE & CO For: Sep 30 | -0.28% | +0.67% |
| AMD | Form 8-K ADVANCED MICRO DEVICES For: Nov 04 | +1.03% | +5.45% |
| AMD | AMD Reports Third Quarter 2025 Financial Results | +1.03% | +5.45% |
| NFLX | Form 8-K NETFLIX INC For: Oct 30 | -0.31% | +1.26% |
| MSFT | Cyclotron Selected for Microsoft's 2025-2026 Inner Circle for AI Business Solutions | +0.08% | +0.27% |
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 →
How the numbers are made.
How was AMZN's -1.03% reaction measured?
From the news timestamp, not the trading day: News Quantified takes the last trade before this SEC filing (Form 13F-HR) as the base price and measures the move five minutes of trading later — point-in-time, zero look-ahead. The same clock produced the +0.49% to-close figure.
What is Amazon's median reaction, and how does this event compare?
Amazon's median is drawn from 2,000+ labeled events; at 30 minutes it sits at -0.11%, and -0.04% by the close. This event's move is one draw from that distribution — ordinary or outlier, the chart's median ticks show which.
Only one Amazon headline was labeled Nov 4, 2025. How is it isolated?
It was the only Amazon headline labeled that day, so its window has no same-day overlap — the move is measured cleanly from its own timestamp.
Does +0.49% predict Amazon's next reaction?
No. +0.49% is a realized fact about Nov 4, 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 13F-HR AMAZON COM INC For: Sep 30." AMZN realized price reaction, Nov 4, 2025. Retrieved from https://newsquantified.com/tickers/amzn/news/form-13f-hr-amazon-com-for-sep-30-2025-11-04
Canonical URL: https://newsquantified.com/tickers/amzn/news/form-13f-hr-amazon-com-for-sep-30-2025-11-04
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