Ampco-Pittsburgh Corporation (AP)
AP moved a median of 0.00% 30 minutes after news, and -0.81% by the close. How AP actually reacts to news — the realized, point-in-time move the market made, measured across 163 labeled events over the last three years with zero look-ahead.
AP’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.11% | 33% | 147 |
| 30-min | 0.00% | 45% | 161 |
| 60-min | 0.00% | 47% | 163 |
| to close | -0.81% | 45% | 160 |
| Middle 50% of AP reactions | -1.27% to +1.40% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 163 |
Half of all Ampco-Pittsburgh Corporation news events land between -1.27% and +1.40% 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 AP moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AP's baseline. Nothing else.
Recent AP events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K AMPCO PITTSBURGH CORP For: Sep 23 | SEC filing · Form 8-K | SEC EDGAR | -1.05% | -1.64% | |
| Ampco-Pittsburgh Corporation to Present at the Sidoti Small-Cap Virtual Investor Conference on September 23, 2026 | Press release | Business Wire | -0.47% | +0.71% | |
| Ampco-Pittsburgh Corporation Announces Second Quarter 2026 Results | Press release | Business Wire | -0.11% | +4.25% | |
| Form 10-Q AMPCO PITTSBURGH CORP For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.11% | +4.25% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | -0.11% | +4.25% | |
| Ampco-Pittsburgh Schedules Second Quarter 2026 Earnings Conference Call | Press release | Business Wire | +0.12% | +5.26% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Jul 08 | SEC filing · Form 8-K | SEC EDGAR | +2.79% | -7.17% | |
| Ampco-Pittsburgh Corporation Announces Significant Increase in Customer Order Activity | Press release | Business Wire | +2.79% | -7.17% | |
| Ampco-Pittsburgh Corporation Joins US small-cap Russell 2000® Index | Press release | Business Wire | -0.46% | -1.71% | |
| Ampco-Pittsburgh Corporation to Present at the East Coast IDEAS Investor Conference on June 10, 2026, in New York | Press release | Business Wire | +1.15% | +3.17% | |
| Form SD AMPCO PITTSBURGH CORP | SEC filing · Form SD | SEC EDGAR | -2.27% | +0.98% | |
| Ampco-Pittsburgh Corporation Announces First Quarter 2026 Results | Press release | Business Wire | -1.35% | +6.09% | |
| Form 10-Q AMPCO PITTSBURGH CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.35% | +6.09% | |
| Form 8-K AMPCO PITTSBURGH CORP For: May 08 | SEC filing · Form 8-K | SEC EDGAR | -1.35% | +6.09% | |
| Form 8-K AMPCO PITTSBURGH CORP For: May 12 | SEC filing · Form 8-K | SEC EDGAR | -1.35% | +6.09% | |
| Ampco-Pittsburgh Schedules First Quarter 2026 Earnings Conference Call | Press release | Business Wire | +0.79% | +5.43% | |
| Form ARS AMPCO PITTSBURGH CORP For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -1.08% | -3.38% | |
| Form DEF 14A AMPCO PITTSBURGH CORP For: May 08 | SEC filing · Form DEF | SEC EDGAR | -1.08% | -3.38% | |
| Form DEFA14A AMPCO PITTSBURGH CORP | SEC filing · Form DEFA14A | SEC EDGAR | -1.08% | -3.38% | |
| Ampco-Pittsburgh Corporation (NYSE: AP) Announces Fourth Quarter and Full Year 2025 Results | Press release | Business Wire | -10.33% | -9.92% | |
| Form 10-K AMPCO PITTSBURGH CORP For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -10.33% | -9.92% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Mar 16 | SEC filing · Form 8-K | SEC EDGAR | -10.33% | -9.92% | |
| Form EFFECT AMPCO PITTSBURGH CORP | SEC filing · Form EFFECT | SEC EDGAR | +0.30% | -4.97% | |
| Ampco-Pittsburgh Schedules Fourth Quarter 2025 Results Conference Call | Press release | Business Wire | -2.34% | -3.25% | |
| Form POS AM AMPCO PITTSBURGH CORP | SEC filing · Form POS | SEC EDGAR | +0.89% | +11.00% | |
| Ampco-Pittsburgh Corporation Announces Significant Increase in Customer Orders | Press release | Business Wire | -0.06% | +10.57% | |
| Ampco-Pittsburgh Corporation Subsidiary Announces Record Customer Order Activity | Press release | Business Wire | +2.45% | -1.78% | |
| Ampco-Pittsburgh Corporation to Present at the Sidoti Micro-Cap Virtual Investor Conference on January 21, 2026 | Press release | Business Wire | -0.18% | -5.31% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | +0.57% | +3.71% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Nov 18 | SEC filing · Form 8-K | SEC EDGAR | -0.93% | -4.83% | |
| Ampco-Pittsburgh Corporation (NYSE: AP) Announces Third Quarter 2025 Results | Press release | Business Wire | +3.33% | — | |
| Form 10-Q AMPCO PITTSBURGH CORP For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +3.33% | — | |
| Form 8-K AMPCO PITTSBURGH CORP For: Nov 12 | SEC filing · Form 8-K | SEC EDGAR | +3.33% | — | |
| Ampco-Pittsburgh Corporation (NYSE: AP) Announces CFO Transition | Press release | Business Wire | +0.00% | +5.98% | |
| Ampco-Pittsburgh Corporation to Present at the Three Part Advisors IDEAS Investor Conference on November 19, 2025 in Dallas, TX | Press release | Business Wire | +0.00% | +5.98% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +5.98% | |
| Ampco-Pittsburgh Schedules Third Quarter 2025 Earnings Conference Call | Press release | Business Wire | +0.00% | -4.54% | |
| Ampco-Pittsburgh Subsidiary Accelerates Exit from U.K. Operations | Press release | Business Wire | -2.17% | -7.79% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Oct 10 | SEC filing · Form 8-K | SEC EDGAR | -2.17% | -7.79% | |
| Ampco-Pittsburgh Corporation (NYSE: AP) Announces Second Quarter 2025 Results | Press release | Business Wire | -8.41% | -6.96% | |
| Form 10-Q AMPCO PITTSBURGH CORP For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -8.41% | -6.96% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | -8.41% | -6.96% | |
| Ampco-Pittsburgh Schedules Second Quarter 2025 Earnings Conference Call | Press release | Business Wire | +0.00% | -1.16% | |
| Ampco-Pittsburgh Corporation Issues Reminder Regarding Warrant Expiration | Press release | Business Wire | +0.00% | +1.21% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Jul 18 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.21% | |
| Ampco-Pittsburgh Corporation Announces Closing of Amended and Restated Credit Facility | Press release | Business Wire | +0.85% | -1.99% | |
| Form 8-K AMPCO PITTSBURGH CORP For: Jun 25 | SEC filing · Form 8-K | SEC EDGAR | +0.85% | -1.99% | |
| Form SD AMPCO PITTSBURGH CORP | SEC filing · Form SD | SEC EDGAR | -1.85% | -8.33% | |
| Ampco-Pittsburgh Corporation (NYSE: AP) Announces First Quarter 2025 Results | Press release | Business Wire | +1.40% | -17.19% | |
| Form 10-Q AMPCO PITTSBURGH CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.40% | -17.19% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AP section they belong to.
Where else AP is measured.
AP earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| CHINA MERCH PRT HL UN/ADR (CMHHY) | 164 | 0.00% | 8% |
| Steel Connect, Inc. (STCN) | 164 | +0.47% | 53% |
| 3 PEA INTL (TPNL) | 163 | 0.00% | 45% |
| DD3 Acquisition Corp. II - Unit (DDMXU) | 162 | 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 Ampco-Pittsburgh Corporation's median reaction calculated?
Every labeled AP 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 163 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. 45% of AP'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 AP'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.