ASE Technology Holding Co., Ltd. American Depositary Shares (each representing Two Common Shares) (ASX)
ASX moved a median of +0.19% 30 minutes after news, and +0.25% by the close. How ASX actually reacts to news — the realized, point-in-time move the market made, measured across 215 labeled events over the last three years with zero look-ahead.
ASX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.04% | 51% | 209 |
| 30-min | +0.19% | 53% | 214 |
| 60-min | +0.23% | 56% | 215 |
| to close | +0.25% | 57% | 213 |
| Middle 50% of ASX reactions | -0.63% to +1.11% |
|---|---|
| Median reaction (30-min) | +0.19% |
| Measured reactions | 215 |
Half of all ASE Technology Holding Co., Ltd. American Depositary Shares (each representing Two Common Shares) news events land between -0.63% and +1.11% 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 ASX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ASX's baseline. Nothing else.
Recent ASX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| ASE Expands PowerSiP™ Platform for Next-Generation AI Power Delivery | Press release | Business Wire | +0.13% | +3.82% | |
| Form 6-K ASE Technology Holding For: Oct 13 | SEC filing · Form 6-K | SEC EDGAR | +0.13% | +3.82% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -1.84% | +0.68% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +2.06% | +2.26% | |
| Form 6-K ASE Technology Holding For: Sep 09 | SEC filing · Form 6-K | SEC EDGAR | +2.06% | +2.26% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -1.03% | — | |
| Form 6-K ASE Technology Holding For: Aug 10 | SEC filing · Form 6-K | SEC EDGAR | -1.03% | — | |
| Form 6-K ASE Technology Holding For: Aug 03 | SEC filing · Form 6-K | SEC EDGAR | -1.59% | +2.34% | |
| ASE Technology Holding Co., Ltd. Reports Its Unaudited Consolidated Financial Results for the Second Quarter of 2026 | Press release | PR Newswire | +3.13% | +7.58% | |
| Form 6-K ASE Technology Holding For: Jul 30 | SEC filing · Form 6-K | SEC EDGAR | +3.13% | +7.58% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.92% | -0.09% | |
| Form 6-K ASE Technology Holding For: Jul 09 | SEC filing · Form 6-K | SEC EDGAR | +0.92% | -0.09% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -0.22% | -3.94% | |
| Form 6-K ASE Technology Holding For: Jun 09 | SEC filing · Form 6-K | SEC EDGAR | -0.22% | -3.94% | |
| Form SD ASE Technology Holding | SEC filing · Form SD | SEC EDGAR | -0.85% | -2.29% | |
| ASE Launches Automated 310mm Panel-Level Packaging to Accelerate AI Innovation | Press release | Business Wire | +0.63% | +2.29% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.09% | +2.85% | |
| Form 6-K ASE Technology Holding For: May 08 | SEC filing · Form 6-K | SEC EDGAR | +0.09% | +2.85% | |
| Form 6-K/A ASE Technology Holding For: May 08 | SEC filing · Form 6-K | SEC EDGAR | +1.58% | +3.64% | |
| ASE Technology Holding Co., Ltd. Reports Its Unaudited Consolidated Financial Results for the First Quarter of 2026 | Press release | PR Newswire | -3.18% | +0.23% | |
| Form 6-K ASE Technology Holding For: Apr 29 | SEC filing · Form 6-K | SEC EDGAR | -3.18% | +0.23% | |
| ASE Holdings Hosts Annual Supplier Day to Recognize Outstanding Suppliers of 2025 | Press release | Business Wire | +1.30% | +1.68% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.00% | -0.56% | |
| Form 6-K ASE Technology Holding For: Apr 10 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -0.56% | |
| ASE TECHNOLOGY HOLDING CO., LTD. Files 2025 Annual Report On Form 20-F | Press release | PR Newswire | +0.33% | +0.58% | |
| Form 6-K ASE Technology Holding For: Apr 08 | SEC filing · Form 6-K | SEC EDGAR | +0.33% | +0.58% | |
| Form 20-F ASE Technology Holding For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.73% | -0.22% | |
| Form 6-K ASE Technology Holding For: Mar 27 | SEC filing · Form 6-K | SEC EDGAR | +0.83% | -0.69% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -0.73% | -0.73% | |
| Form 6-K ASE Technology Holding For: Mar 10 | SEC filing · Form 6-K | SEC EDGAR | -0.73% | -0.73% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.04% | +0.22% | |
| Form 6-K ASE Technology Holding For: Feb 10 | SEC filing · Form 6-K | SEC EDGAR | +0.04% | +0.22% | |
| ASE Technology Holding Co., Ltd. Reports Its Unaudited Consolidated Financial Results for the Fourth Quarter and the Full Year of 2025 | Press release | PR Newswire | +1.83% | +9.22% | |
| Form 6-K ASE Technology Holding For: Feb 05 | SEC filing · Form 6-K | SEC EDGAR | +1.83% | +9.22% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -0.94% | +0.17% | |
| Form 6-K ASE Technology Holding For: Jan 09 | SEC filing · Form 6-K | SEC EDGAR | -0.94% | +0.17% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.44% | +1.33% | |
| Form 6-K ASE Technology Holding For: Dec 09 | SEC filing · Form 6-K | SEC EDGAR | +0.44% | +1.33% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -0.72% | -0.13% | |
| Form 6-K ASE Technology Holding For: Nov 10 | SEC filing · Form 6-K | SEC EDGAR | -0.72% | -0.13% | |
| ASE Unveils IDE 2.0 – AI-Enhanced Platform Accelerates Package Design Accuracy and Innovation | Press release | Business Wire | +0.35% | -0.84% | |
| ASE Technology Holding Co., Ltd. Reports Its Unaudited Consolidated Financial Results for the Third Quarter of 2025 | Press release | PR Newswire | -1.03% | +2.87% | |
| Form 6-K ASE Technology Holding For: Oct 30 | SEC filing · Form 6-K | SEC EDGAR | -1.03% | +2.87% | |
| ASE and Analog Devices Announce Strategic Collaboration | Press release | Business Wire | -0.47% | -1.01% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | -0.25% | -1.35% | |
| Form 6-K ASE Technology Holding For: Oct 09 | SEC filing · Form 6-K | SEC EDGAR | -0.25% | -1.35% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.04% | -0.88% | |
| Form 6-K ASE Technology Holding For: Sep 09 | SEC filing · Form 6-K | SEC EDGAR | +0.04% | -0.88% | |
| ASE Technology Holding Co., Ltd. Announces Monthly Net Revenues* | Press release | PR Newswire | +0.10% | -0.50% | |
| Form 6-K ASE Technology Holding For: Aug 11 | SEC filing · Form 6-K | SEC EDGAR | +0.10% | -0.50% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ASX section they belong to.
Where else ASX is measured.
ASX earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| CTS Corporation (CTS) | 216 | -0.04% | 45% |
| DIGITALTOWN INC (DGTW) | 216 | 0.00% | 25% |
| One Stop Systems, Inc. (OSS) | 214 | +0.08% | 51% |
| SENDGRID INC (SEND) | 211 | -0.04% | 50% |
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
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Every name we’ve measured, in one place.
How the numbers are made.
How is ASE Technology Holding Co., Ltd. American Depositary Shares (each representing Two Common Shares)'s median reaction calculated?
Every labeled ASX 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 215 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. 53% of ASX'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 ASX'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.