Alpha Pro Tech, Ltd. (APT)
APT moved a median of -0.10% 30 minutes after news, and -0.43% by the close. How APT actually reacts to news — the realized, point-in-time move the market made, measured across 115 labeled events over the last three years with zero look-ahead.
APT’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 29% | 73 |
| 30-min | -0.10% | 41% | 102 |
| 60-min | -0.12% | 42% | 113 |
| to close | -0.43% | 38% | 115 |
| Middle 50% of APT reactions | -1.04% to +0.64% |
|---|---|
| Median reaction (30-min) | -0.10% |
| Measured reactions | 115 |
Half of all Alpha Pro Tech, Ltd. news events land between -1.04% and +0.64% 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 APT moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to APT's baseline. Nothing else.
Recent APT events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K ALPHA PRO TECH LTD For: Sep 14 | SEC filing · Form 8-K | SEC EDGAR | — | -3.52% | |
| Form 10-Q ALPHA PRO TECH LTD For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.96% | +0.38% | |
| Alpha Pro Tech, Ltd. Announces Second Quarter 2026 Financial Results | Press release | GlobeNewswire | -0.10% | +3.37% | |
| Form 8-K ALPHA PRO TECH LTD For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +0.10% | +0.00% | |
| Form 8-K ALPHA PRO TECH LTD For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +1.63% | +0.96% | |
| Alpha Pro Tech, Ltd. Announces First Quarter 2026 Financial Results | Press release | GlobeNewswire | -1.17% | +26.81% | |
| Form 10-Q ALPHA PRO TECH LTD For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.34% | +8.45% | |
| Form 8-K ALPHA PRO TECH LTD For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -1.17% | +26.81% | |
| Form ARS ALPHA PRO TECH LTD For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | — | +0.22% | |
| Form DEF 14A ALPHA PRO TECH LTD For: Jun 10 | SEC filing · Form DEF | SEC EDGAR | — | +0.22% | |
| Form DEFA14A ALPHA PRO TECH LTD | SEC filing · Form DEFA14A | SEC EDGAR | — | +0.22% | |
| Alpha Pro Tech, Ltd. Announces Fourth Quarter and Full Year 2025 Financial Results | Press release | GlobeNewswire | +0.00% | -5.43% | |
| Form 10-K ALPHA PRO TECH LTD For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | -5.43% | |
| Form 8-K ALPHA PRO TECH LTD For: Mar 11 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -5.43% | |
| Form 10-Q ALPHA PRO TECH LTD For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | — | +0.32% | |
| Alpha Pro Tech, Ltd. Announces Third Quarter 2025 Financial Results | Press release | GlobeNewswire | +0.44% | +1.65% | |
| Form 8-K ALPHA PRO TECH LTD For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | +0.44% | +1.65% | |
| Form 8-K ALPHA PRO TECH LTD For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | — | -0.53% | |
| Alpha Pro Tech, Ltd. Announces Second Quarter 2025 Financial Results | Press release | GlobeNewswire | +4.00% | -1.05% | |
| Form 10-Q ALPHA PRO TECH LTD For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.21% | -0.21% | |
| ALPHA PRO TECH, LTD. ANNOUNCES $2 MILLION EXPANSION OF SHARE REPURCHASE PROGRAM | Press release | GlobeNewswire | -1.03% | -2.47% | |
| Form 8-K ALPHA PRO TECH LTD For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.43% | |
| Alpha Pro Tech, Ltd. Announces First Quarter 2025 Financial Results | Press release | GlobeNewswire | — | +2.88% | |
| Form 10-Q ALPHA PRO TECH LTD For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.53% | +1.53% | |
| Form 8-K ALPHA PRO TECH LTD For: May 08 | SEC filing · Form 8-K | SEC EDGAR | — | +2.88% | |
| Form ARS ALPHA PRO TECH LTD For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +0.69% | |
| Form DEF 14A ALPHA PRO TECH LTD For: Jun 10 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +0.69% | |
| Form DEFA14A ALPHA PRO TECH LTD | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | +0.69% | |
| Alpha Pro Tech, Ltd. Announces Fourth Quarter and Full Year 2024 Financial Results | Press release | GlobeNewswire | +0.00% | -1.17% | |
| Form 10-K ALPHA PRO TECH LTD For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | — | -0.39% | |
| Form 8-K ALPHA PRO TECH LTD For: Mar 12 | SEC filing · Form 8-K | SEC EDGAR | — | -1.17% | |
| ALPHA PRO TECH, LTD. ANNOUNCES $2 MILLION EXPANSION OF SHARE REPURCHASE PROGRAM | Press release | GlobeNewswire | -1.13% | -0.19% | |
| Form 10-Q ALPHA PRO TECH LTD For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.18% | |
| Alpha Pro Tech, Ltd. Announces Third Quarter 2024 Financial Results | Press release | GlobeNewswire | -4.59% | -3.67% | |
| Form 8-K ALPHA PRO TECH LTD For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | — | +0.52% | |
| ALPHA PRO TECH, LTD. ANNOUNCES $1 MILLION EXPANSION OF SHARE REPURCHASE PROGRAM FOR IMMEDIATE RELEASE | Press release | GlobeNewswire | +0.86% | -0.86% | |
| Form 10-Q ALPHA PRO TECH LTD For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.34% | -0.52% | |
| Alpha Pro Tech, Ltd. Announces Second Quarter 2024 Financial Results | Press release | GlobeNewswire | -1.64% | -2.20% | |
| Form 8-K ALPHA PRO TECH LTD For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | — | +1.52% | |
| Form 8-K ALPHA PRO TECH LTD For: Jun 12 | SEC filing · Form 8-K | SEC EDGAR | — | -2.39% | |
| Form 10-Q ALPHA PRO TECH LTD For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.55% | +1.55% | |
| Alpha Pro Tech, Ltd. Announces First Quarter 2024 Financial Results | Press release | GlobeNewswire | -0.33% | -4.17% | |
| Form 8-K ALPHA PRO TECH LTD For: May 08 | SEC filing · Form 8-K | SEC EDGAR | -0.33% | -4.17% | |
| Form ARS ALPHA PRO TECH LTD For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.33% | -1.14% | |
| Form DEF 14A ALPHA PRO TECH LTD For: Jun 12 | SEC filing · Form DEF | SEC EDGAR | -0.33% | -1.14% | |
| Form DEFA14A ALPHA PRO TECH LTD | SEC filing · Form DEFA14A | SEC EDGAR | -0.33% | -1.14% | |
| ALPHA PRO TECH, LTD. ANNOUNCES $2 MILLION EXPANSION OF SHARE REPURCHASE PROGRAM | Press release | GlobeNewswire | -0.91% | +3.65% | |
| Alpha Pro Tech, Ltd. Announces Fourth Quarter and Full Year 2023 Financial Results | Press release | GlobeNewswire | -2.10% | -0.97% | |
| Form 10-K ALPHA PRO TECH LTD For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -2.10% | -0.97% | |
| Form 8-K ALPHA PRO TECH LTD For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | -0.57% | +0.41% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the APT section they belong to.
Where else APT is measured.
APT earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Denison Mines Corp (DML_TSE) | 118 | +0.41% | 56% |
| Fortuna Silver Mines Inc (FVI_TSE) | 117 | +0.26% | 58% |
| INCITEC PIVOT LTD S/ADR (INCZY) | 115 | 0.00% | 19% |
| Titan Mining Corp (TI_TSE) | 115 | 0.00% | 21% |
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.
All Basic Materials names, measured the same way →
Every ticker we measure the same way24
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Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is Alpha Pro Tech, Ltd.'s median reaction calculated?
Every labeled APT 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 115 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. 41% of APT'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 APT'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.