Walmart's SEC filing (Form 8-K) — WMT's reaction is being measured
WMT's realized reaction is still being measured.
· SEC EDGAR · SEC filing · Form 8-K · Realized reaction, point-in-time, zero look-ahead.
Form 8-K Walmart Inc. For: Oct 19
Via SEC EDGAR
Reaction is being measured.
This event is recent. News Quantified labels the realized price reaction once the trading sessions after the news complete — point-in-time, with zero look-ahead. The measured move will appear here, and below in WMT’s reaction history.
WMT’s news landed in the pre-market window; the main session closed +0.22%.
- 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 |
|---|---|---|---|
| All | From the news to the first main-session close, across every session in between. | 120.73re-anchored to the first print after the news | +0.22% |
| 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. | — | not measured |
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. 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 | +0.15% |
| 1 min | -0.03% |
| 5 min | -0.03% |
| 10 min | -0.03% |
| 30 min | -0.03% |
| 60 min | -0.03% |
| 90 min | -0.03% |
| 120 min | -0.03% |
Where this WMT event came from, and what the tape did with it.
Walmart filed Form 8-K with the SEC on Oct 23, 2026. It was the only Walmart headline News Quantified labeled that day.
Against the price at the news timestamp, WMT's reaction is still being measured.
How this compares to WMT’s usual reaction.
Across 2,000+ labeled events, WMT’s median 30-minute reaction to all news is +0.01% (52% up); by the close it is -0.05%.
| Middle 50% of WMT reactions | -0.40% to +0.33% |
|---|---|
| Median reaction (30-min) | +0.01% |
| Measured reactions | 2,000+ |
Half of all Walmart news events land between -0.40% and +0.33% at 30 minutes; this one is a single draw from that distribution.
You just saw one reaction. There are 26M+ more.
See the full WMT reaction history →What the WMT tape carried around this event.
The 20-day average true range into this session was 2.44. WMT carries no market-cap or price-to-earnings figure on this record, and no short interest, so none is shown.
Email me when WMT moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to WMT's baseline. Nothing else.
How comparable WMT events have landed.
Across 3 other recent Walmart SEC filing events, the median close-day reaction was +1.74%. Each is measured the same way, from its own news timestamp.
| Date | Headline | 5-min | To close |
|---|---|---|---|
| Form 10-Q Walmart Inc. For: Jul 31 | +0.53% | +1.74% | |
| Form IRANNOTICE Walmart Inc. | +0.53% | +1.74% | |
| Form 8-K Walmart Inc. For: Aug 20 | -1.17% | -2.50% | |
| Form 13F-HR Walmart Inc. For: Jun 30 | +0.40% | — | |
| Form N-PX Walmart Inc. For: Jun 30 | +0.40% | — |
8 more WMT events, each measured the same way.
Recent WMT events, each with its measured reaction8
That same day, across the market3
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 WMT's 5-minute 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 to-close figure.
What is Walmart's median reaction, and how does this event compare?
Walmart's median is drawn from 2,000+ labeled events; at 30 minutes it sits at +0.01%, and -0.05% 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 Walmart headline was labeled Oct 23, 2026. How is it isolated?
It was the only Walmart headline labeled that day, so its window has no same-day overlap — the move is measured cleanly from its own timestamp.
Does a measured reaction predict Walmart's next reaction?
No. a measured reaction is a realized fact about Oct 23, 2026, 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 Walmart Inc. For: Oct 19." WMT realized price reaction, Oct 23, 2026. Retrieved from https://newsquantified.com/tickers/wmt/news/form-8-k-walmart-for-oct-19-2026-10-23
Canonical URL: https://newsquantified.com/tickers/wmt/news/form-8-k-walmart-for-oct-19-2026-10-23
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