SigmaTron International, Inc. (SGMA)
SGMA moved a median of +0.17% 30 minutes after news, and 0.00% by the close. How SGMA actually reacts to news — the realized, point-in-time move the market made, measured across 94 labeled events over the last three years with zero look-ahead.
SGMA’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 46% | 65 |
| 30-min | +0.17% | 54% | 74 |
| 60-min | 0.00% | 44% | 75 |
| to close | 0.00% | 38% | 77 |
| Middle 50% of SGMA reactions | -0.59% to +1.18% |
|---|---|
| Median reaction (30-min) | +0.17% |
| Measured reactions | 94 |
Half of all SigmaTron International, Inc. news events land between -0.59% and +1.18% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when SGMA moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SGMA's baseline. Nothing else.
Recent SGMA events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K SIGMATRON INTERNATIONAL For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-8 POS SIGMATRON INTERNATIONAL | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Transom Capital Completes Acquisition of SigmaTron International | Press release | GlobeNewswire | — | — | |
| Form NT 10-K SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form NT | SEC EDGAR | — | -0.33% | |
| Transom Capital and SigmaTron International Announce Expiration of Tender Offer | Press release | GlobeNewswire | +0.00% | +0.00% | |
| SGMA STOCK ALERT: HALPER SADEH LLC is Investigating Whether the Sale of Sigmatron International, Inc. Is Fair to Shareholders | Press release | ACCESS Newswire | +0.00% | -0.33% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Jun 20 | SEC filing · Form 8-K | SEC EDGAR | -0.34% | -0.51% | |
| Form 8-K SIGMATRON INTERNATIONAL For: May 22 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.00% | |
| Form SD SIGMATRON INTERNATIONAL | SEC filing · Form SD | SEC EDGAR | +0.00% | +0.34% | |
| Form 8-K SIGMATRON INTERNATIONAL For: May 20 | SEC filing · Form 8-K | SEC EDGAR | +0.34% | +1.36% | |
| Form 8-K SIGMATRON INTERNATIONAL For: May 21 | SEC filing · Form 8-K | SEC EDGAR | +0.34% | +1.36% | |
| SGMA Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of SigmaTron International, Inc. Is Fair to Shareholders | Press release | Business Wire | +0.16% | -0.01% | |
| Transom Capital and SigmaTron International Announce Entry into Merger Agreement | Press release | GlobeNewswire | +0.34% | +1.36% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | -0.89% | |
| Form 10-Q SIGMATRON INTERNATIONAL For: Jan 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.91% | +7.14% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Mar 14 | SEC filing · Form 8-K | SEC EDGAR | +1.91% | +7.14% | |
| SigmaTron International, Inc. Reports Financial Results for the Third Quarter of Fiscal 2025 | Press release | GlobeNewswire | +1.91% | +7.14% | |
| Form 10-Q SIGMATRON INTERNATIONAL For: Oct 31 | SEC filing · Form 10-Q | SEC EDGAR | +6.45% | +2.58% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Dec 20 | SEC filing · Form 8-K | SEC EDGAR | +6.45% | +2.58% | |
| SigmaTron International, Inc. Reports Financial Results For the Second Quarter of Fiscal 2025 | Press release | GlobeNewswire | +6.45% | +2.58% | |
| Form NT 10-Q SIGMATRON INTERNATIONAL For: Oct 31 | SEC filing · Form NT | SEC EDGAR | +0.63% | -9.89% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Dec 10 | SEC filing · Form 8-K | SEC EDGAR | — | -1.24% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Nov 08 | SEC filing · Form 8-K | SEC EDGAR | -1.43% | -1.79% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | — | -0.00% | |
| Form ARS SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +3.41% | |
| Form DEF 14A SIGMATRON INTERNATIONAL For: Oct 22 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +3.41% | |
| Form 10-Q SIGMATRON INTERNATIONAL For: Jul 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +3.41% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Sep 19 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.38% | |
| Sigmatron International, Inc. Reports First Quarter Financial Results For Fiscal 2025 | Press release | GlobeNewswire | +0.00% | -0.38% | |
| Form NT 10-Q SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form NT | SEC EDGAR | +0.93% | +0.00% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | +1.27% | +5.51% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Sep 11 | SEC filing · Form 8-K | SEC EDGAR | +1.27% | +5.51% | |
| SigmaTron International, Inc. Regains Compliance with Nasdaq Listing Rule 5250(c)(1) | Press release | GlobeNewswire | +1.27% | +5.51% | |
| Form 10-K/A SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form 10-K | SEC EDGAR | — | -1.80% | |
| Form 10-K SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form 10-K | SEC EDGAR | +0.07% | -4.88% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Sep 03 | SEC filing · Form 8-K | SEC EDGAR | -4.59% | +4.59% | |
| SigmaTron International, Inc. Reports Financial Results for Fiscal 2024 | Press release | GlobeNewswire | -4.59% | +4.59% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Aug 19 | SEC filing · Form 8-K | SEC EDGAR | -0.29% | +4.41% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Aug 16 | SEC filing · Form 8-K | SEC EDGAR | -1.03% | +0.00% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Aug 19 | SEC filing · Form 8-K | SEC EDGAR | -1.03% | +0.00% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Aug 21 | SEC filing · Form 8-K | SEC EDGAR | -1.03% | +0.00% | |
| SigmaTron International, Inc. Receives Nasdaq Notice Regarding Late Form 10-K Filing | Press release | GlobeNewswire | -1.03% | +0.00% | |
| Form NT 10-K SIGMATRON INTERNATIONAL For: Apr 30 | SEC filing · Form NT | SEC EDGAR | +2.56% | -4.83% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Jul 02 | SEC filing · Form 8-K | SEC EDGAR | — | +0.00% | |
| Form SD SIGMATRON INTERNATIONAL | SEC filing · Form SD | SEC EDGAR | — | +3.39% | |
| Form 10-Q SIGMATRON INTERNATIONAL For: Jan 31 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.89% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Mar 08 | SEC filing · Form 8-K | SEC EDGAR | +0.87% | -2.90% | |
| SigmaTron International, Inc. Reports Financial Results for the Third Quarter of Fiscal 2024 | Press release | GlobeNewswire | +0.87% | -2.90% | |
| Form 10-Q SIGMATRON INTERNATIONAL For: Oct 31 | SEC filing · Form 10-Q | SEC EDGAR | — | +0.17% | |
| Form 8-K SIGMATRON INTERNATIONAL For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | — | -0.71% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SGMA section they belong to.
Where else SGMA is measured.
SGMA earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| ANDREA ELECTRONICS CORP (ANDR) | 96 | 0.00% | 28% |
| ROHM CO LTD UNSP/ADR (ROHCY) | 95 | 0.00% | 28% |
| SemiLEDS Corporation (LEDS) | 93 | -0.75% | 34% |
| Quarter Hill Inc (QTRH_TSE) | 93 | 0.00% | 46% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
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How the numbers are made.
How is SigmaTron International, Inc.'s median reaction calculated?
Every labeled SGMA news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 94 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 54% of SGMA's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does SGMA's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.