Amkor Technology, Inc. (AMKR)
AMKR moved a median of -0.04% 30 minutes after news, and -0.48% by the close. How AMKR actually reacts to news — the realized, point-in-time move the market made, measured across 621 labeled events over the last three years with zero look-ahead.
AMKR’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.10% | 47% | 620 |
| 30-min | -0.04% | 48% | 620 |
| 60-min | -0.18% | 40% | 620 |
| to close | -0.48% | 40% | 616 |
| Middle 50% of AMKR reactions | -0.97% to +0.63% |
|---|---|
| Median reaction (30-min) | -0.04% |
| Measured reactions | 621 |
Half of all Amkor Technology, Inc. news events land between -0.97% and +0.63% at 30 minutes.
Reaction stats as of 2026-08-31. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How AMKR reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 14 | -0.01% | 50% | -2.52% |
| Analyst downgrades | 17 | +1.38% | 65% | -0.41% |
| Coverage initiations | 32 | +0.30% | 53% | -0.37% |
| Rating reiterations | 63 | -0.32% | 46% | -0.96% |
| Price-target raises | 21 | -0.17% | 38% | -0.28% |
| Price-target cuts | 15 | +0.49% | 60% | -2.18% |
Last 3 years, pulled 2026-08-31. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. See how AMKR ranks against every other measured name →
That’s how AMKR usually reacts — get an email when it moves on news →Email me when AMKR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AMKR's baseline. Nothing else.
Recent AMKR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Amkor Technology Announces Phase 2 of Arizona Advanced Packaging and Test Campus; Expands Investment to $12 Billion | Press release | Business Wire | +0.75% | +1.02% | |
| Amkor Technology to Present at the Goldman Sachs Communacopia + Technology Conference | Press release | Business Wire | -2.04% | -0.21% | |
| Amkor Technology Declares Quarterly Dividend | Press release | Business Wire | +0.01% | -2.06% | |
| Form 10-Q AMKOR TECHNOLOGY, INC. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.40% | -1.03% | |
| Amkor Technology Reports Financial Results for the Second Quarter 2026 | Press release | Business Wire | -5.27% | -11.91% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Jul 27 | SEC filing · Form 8-K | SEC EDGAR | -5.27% | -11.91% | |
| Amkor Technology Announces Strategic Partnership with NVIDIA to Expand Advanced Packaging and Test for Next-Generation AI Infrastructure | Press release | Business Wire | -3.71% | -8.48% | |
| Amkor Technology to Announce Second Quarter 2026 Financial Results on July 27, 2026 | Press release | Business Wire | -0.76% | -0.86% | |
| TSMC and Amkor Technology Announce Long Term Partnership to Accelerate Advanced Packaging in the United States | Press release | Business Wire | +6.67% | +0.39% | |
| Form SD AMKOR TECHNOLOGY, INC. | SEC filing · Form SD | SEC EDGAR | -1.66% | +2.03% | |
| Amkor Technology to Host 2026 Investor Day and Ring Nasdaq Closing Bell | Press release | Business Wire | -0.78% | -3.43% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: May 21 | SEC filing · Form 8-K | SEC EDGAR | -0.78% | -3.43% | |
| Amkor Technology Expands U.S. Advanced Packaging Footprint with Additional Land in Arizona | Press release | Business Wire | -0.61% | +1.98% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: May 13 | SEC filing · Form 8-K | SEC EDGAR | -0.61% | +1.98% | |
| Amkor Technology Declares Quarterly Dividend | Press release | Business Wire | -0.75% | -3.00% | |
| Defiance Launches AMKL: The First Daily 2X Long ETF for Amkor Technology, Inc. | Press release | GlobeNewswire | +0.23% | +5.44% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -1.86% | -1.76% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | +0.06% | +0.86% | |
| Amkor Technology Announces Proposed Convertible Senior Notes Offering | Press release | Business Wire | -0.94% | +2.21% | |
| Amkor Technology Prices $1,000 Million Convertible Senior Notes Offering | Press release | Business Wire | +0.54% | +3.21% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -0.07% | +4.27% | |
| Form 10-Q AMKOR TECHNOLOGY, INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -4.75% | -3.25% | |
| Amkor Technology Reports Financial Results for the First Quarter 2026 | Press release | Business Wire | +6.51% | +8.35% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Apr 27 | SEC filing · Form 8-K | SEC EDGAR | +6.51% | +8.35% | |
| Amkor Technology to Announce First Quarter 2026 Financial Results on April 27, 2026 | Press release | Business Wire | +0.70% | -2.65% | |
| Form ARS AMKOR TECHNOLOGY, INC. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.70% | -2.65% | |
| Form DEF 14A AMKOR TECHNOLOGY, INC. For: May 13 | SEC filing · Form DEF | SEC EDGAR | +0.70% | -2.65% | |
| Form DEFA14A AMKOR TECHNOLOGY, INC. | SEC filing · Form DEFA14A | SEC EDGAR | +0.70% | -2.65% | |
| Form 10-K AMKOR TECHNOLOGY, INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.07% | +0.29% | |
| Amkor Technology Declares Quarterly Dividend | Press release | Business Wire | +1.38% | +0.61% | |
| Amkor Technology to Present at the Morgan Stanley Technology, Media & Telecom Conference | Press release | Business Wire | +1.77% | -1.62% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Feb 12 | SEC filing · Form 8-K | SEC EDGAR | -0.83% | -0.17% | |
| Amkor Technology Announces Pricing of Secondary Offering of 10 million Shares of Common Stock by the Kim Family | Press release | Business Wire | +1.63% | -0.90% | |
| Amkor Technology Announces Secondary Offering of 10 Million Shares of Common Stock by the Kim Family | Press release | Business Wire | +1.63% | -0.90% | |
| Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2025 | Press release | Business Wire | -4.99% | -1.35% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | -4.99% | -1.35% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Feb 02 | SEC filing · Form 8-K | SEC EDGAR | -1.63% | -6.02% | |
| Amkor Technology to Announce Fourth Quarter and Full Year 2025 Financial Results on February 9, 2026 | Press release | Business Wire | +2.61% | +5.08% | |
| Amkor Technology to Host 2026 Investor Day | Press release | Business Wire | +1.78% | -5.84% | |
| Amkor Technology to Present at Upcoming Conferences | Press release | Business Wire | +0.76% | +1.09% | |
| Amkor Technology Announces Increase in Quarterly Dividend | Press release | Business Wire | +0.29% | -0.72% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Oct 28 | SEC filing · Form 8-K | SEC EDGAR | +3.98% | +11.49% | |
| Form 10-Q AMKOR TECHNOLOGY, INC. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +3.23% | +1.21% | |
| Amkor Technology Reports Financial Results for the Third Quarter 2025 and Announces CEO Succession Plan | Press release | Business Wire | -1.88% | +5.06% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Oct 21 | SEC filing · Form 8-K | SEC EDGAR | -1.88% | +5.06% | |
| Amkor Technology to Announce Third Quarter 2025 Financial Results on October 27, 2025 | Press release | Business Wire | -1.03% | +1.36% | |
| Amkor Technology Breaks Ground on New Semiconductor Advanced Packaging and Test Campus in Arizona; Expands Investment to $7 Billion | Press release | Business Wire | -4.26% | -10.66% | |
| Amkor Technology Completes Sale of $500 Million of its 5.875% Senior Notes due 2033 and Announces Notice of Full Redemption of its 6.625% Senior Notes due 2027 | Press release | Business Wire | +0.34% | -0.91% | |
| Form 8-K AMKOR TECHNOLOGY, INC. For: Sep 22 | SEC filing · Form 8-K | SEC EDGAR | +0.68% | -0.10% | |
| Amkor Technology Announces Pricing of $500 Million of its 5.875% Senior Notes due 2033 and Intention to Redeem Senior Notes due 2027 | Press release | Business Wire | -0.19% | -0.48% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AMKR section they belong to.
Where else AMKR is measured.
AMKR earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Smartsheet Inc. Class A (SMAR) | 626 | 0.00% | 48% |
| COUNTERPATH (CPAH) | 623 | 0.00% | 39% |
| Q2 Holdings, Inc. (QTWO) | 620 | +0.06% | 51% |
| Veeva Systems Inc. Class A (VEEV) | 620 | +0.10% | 53% |
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 Technology names, measured the same way →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is Amkor Technology, Inc.'s median reaction calculated?
Every labeled AMKR 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 621 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. 48% of AMKR'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 2026-08-31.
Does AMKR'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.