Seagate Technology Holdings PLC - Ordinary Shares (Ireland) (STX)
STX moved a median of +0.17% 30 minutes after news, and -0.03% by the close. How STX actually reacts to news — the realized, point-in-time move the market made, measured across 630 labeled events over the last three years with zero look-ahead.
STX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.12% | 54% | 629 |
| 30-min | +0.17% | 57% | 630 |
| 60-min | +0.19% | 55% | 630 |
| to close | -0.03% | 50% | 619 |
| Middle 50% of STX reactions | -1.02% to +1.19% |
|---|---|
| Median reaction (30-min) | +0.17% |
| Measured reactions | 630 |
Half of all Seagate Technology Holdings PLC - Ordinary Shares (Ireland) news events land between -1.02% and +1.19% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How STX reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 42 | +0.12% | 50% | -0.41% |
| Analyst downgrades | 14 | +0.32% | 57% | +0.51% |
| Coverage initiations | 23 | +0.51% | 52% | 0.00% |
| Rating reiterations | 205 | +0.16% | 56% | -0.11% |
| Price-target raises | 181 | +0.27% | 58% | +0.01% |
| Price-target cuts | 15 | -0.01% | 40% | -0.13% |
Last 3 years, pulled 2026-09-21. 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 STX ranks against every other measured name →
That’s how STX usually reacts — get an email when it moves on news →Email me when STX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to STX's baseline. Nothing else.
Recent STX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Seagate Technology to Report Fiscal First Quarter 2027 Financial Results on October 27, 2026 | Press release | Business Wire | +0.67% | -3.05% | |
| Global Seagate Research Finds Nearly All Organizations Expect AI to Increase Storage Requirements, but Only 38% of Organizations Say They Are Fully Prepared | Press release | Business Wire | +1.03% | +3.41% | |
| Form 8-K Seagate Technology Holdi For: Sep 08 | SEC filing · Form 8-K | SEC EDGAR | +0.21% | -0.81% | |
| Seagate Completes Redemption of Exchangeable Notes | Press release | Business Wire | +0.21% | -0.81% | |
| Form ARS Seagate Technology Holdi For: Jul 03 | SEC filing · Form ARS | SEC EDGAR | +0.21% | -0.81% | |
| Form DEF 14A Seagate Technology Holdi For: Jul 03 | SEC filing · Form DEF | SEC EDGAR | +0.21% | -0.81% | |
| Form DEFA14A Seagate Technology Holdi | SEC filing · Form DEFA14A | SEC EDGAR | +0.21% | -0.81% | |
| Form 8-K Seagate Technology Holdi For: Sep 02 | SEC filing · Form 8-K | SEC EDGAR | +0.19% | +2.69% | |
| Seagate to Participate in Upcoming Investor Events | Press release | Business Wire | +0.37% | -0.16% | |
| Form 10-K Seagate Technology Holdi For: Jul 03 | SEC filing · Form 10-K | SEC EDGAR | +1.05% | -1.23% | |
| Form 8-K Seagate Technology Holdi For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | +1.96% | -2.84% | |
| Seagate Technology Reports Fiscal Fourth Quarter and Fiscal Year 2026 Financial Results | Press release | Business Wire | +1.96% | -2.84% | |
| Seagate Technology to Report Fiscal Fourth Quarter and Fiscal Year 2026 Financial Results on July 28, 2026 | Press release | Business Wire | -3.04% | -7.13% | |
| Form 8-K Seagate Technology Holdi For: Jun 11 | SEC filing · Form 8-K | SEC EDGAR | +1.89% | +5.78% | |
| Seagate Announces Redemption of Exchangeable Notes | Press release | Business Wire | +1.89% | +5.78% | |
| Form SD Seagate Technology Holdi | SEC filing · Form SD | SEC EDGAR | -1.17% | -0.35% | |
| Form 8-K Seagate Technology Holdi For: May 26 | SEC filing · Form 8-K | SEC EDGAR | -0.28% | -0.79% | |
| Seagate Announces Closing of Exchanges with Holders of $185.908 Million Principal Amount of Exchangeable Notes | Press release | Business Wire | -0.28% | -0.79% | |
| Form 8-K Seagate Technology Holdi For: May 20 | SEC filing · Form 8-K | SEC EDGAR | +1.79% | +7.45% | |
| Seagate Announces Exchanges with Holders of $185.908 Million Principal Amount of Exchangeable Notes | Press release | Business Wire | +1.79% | +7.45% | |
| CORRECTION - Leverage Shares by Themes Targets Market Movers Across Tech and Industrials with Nine New 2X Single-Stock ETFs | Press release | GlobeNewswire | -0.19% | +3.49% | |
| Leverage Shares by Themes Targets Market Movers Across Tech and Industrials with Nine New 2X Single-Stock ETFs | Press release | GlobeNewswire | +0.40% | -0.76% | |
| Form 8-K Seagate Technology Holdi For: May 05 | SEC filing · Form 8-K | SEC EDGAR | +0.41% | +2.29% | |
| Seagate Announces the Retirement of Michael R. Cannon, Lead Independent Director, After a 40 Year History in the Disk Drive Industry | Press release | Business Wire | +0.41% | +2.29% | |
| Seagate to Participate in Upcoming Investor Events | Press release | Business Wire | +0.74% | +2.12% | |
| Form 10-Q Seagate Technology Holdi For: Apr 03 | SEC filing · Form 10-Q | SEC EDGAR | -0.45% | +2.96% | |
| Form 8-K Seagate Technology Holdi For: Apr 28 | SEC filing · Form 8-K | SEC EDGAR | +1.79% | -3.69% | |
| Seagate Technology Reports Fiscal Third Quarter 2026 Financial Results | Press release | Business Wire | +1.79% | -3.69% | |
| Defiance Launches STXL: 2X Leveraged ETF on Seagate Technology Holdings plc | Press release | GlobeNewswire | +0.17% | +2.33% | |
| Seagate Introduces Storage Built for Consumer Data Explosion | Press release | Business Wire | +0.17% | +2.33% | |
| Seagate Technology to Report Fiscal Third Quarter 2026 Financial Results on April 28, 2026 | Press release | Business Wire | -0.84% | -0.24% | |
| Wasabi Technologies to Acquire Seagate’s Lyve Cloud Business | Press release | Business Wire | -1.13% | -0.64% | |
| Seagate Delivers Industry’s Highest Capacity Hard Drives with Next-Generation Mozaic™ 4+ | Press release | Business Wire | -0.35% | -0.74% | |
| Form 8-K Seagate Technology Holdi For: Feb 17 | SEC filing · Form 8-K | SEC EDGAR | +0.88% | +1.99% | |
| Seagate Announces Closing of Exchanges with Holders of $600 Million Principal Amount of Exchangeable Notes | Press release | Business Wire | +0.88% | +1.99% | |
| Form 8-K Seagate Technology Holdi For: Feb 11 | SEC filing · Form 8-K | SEC EDGAR | +3.08% | +1.26% | |
| Seagate Announces Exchanges with Holders of $600 Million Principal Amount of Exchangeable Notes | Press release | Business Wire | +3.08% | +1.26% | |
| Seagate to Participate in Upcoming Investor Events | Press release | Business Wire | +3.08% | +1.26% | |
| Form 10-Q Seagate Technology Holdi For: Jan 02 | SEC filing · Form 10-Q | SEC EDGAR | +5.81% | +8.23% | |
| Form S-8 Seagate Technology Holdi | SEC filing · Form S-8 | SEC EDGAR | +5.81% | +8.23% | |
| Form 8-K Seagate Technology Holdi For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | +7.72% | +12.08% | |
| Seagate Technology Reports Fiscal Second Quarter 2026 Financial Results | Press release | Business Wire | +7.72% | +12.08% | |
| Seagate Technology to Report Fiscal Second Quarter 2026 Financial Results on January 27, 2026 | Press release | Business Wire | +0.50% | -2.36% | |
| Seagate 32TB Capacities Now Shipping to Channel and Retail Partners Globally | Press release | Business Wire | +2.86% | +7.41% | |
| Seagate to Participate in Upcoming Investor Events | Press release | Business Wire | +1.22% | -1.37% | |
| Form 8-K Seagate Technology Holdi For: Nov 10 | SEC filing · Form 8-K | SEC EDGAR | -1.50% | — | |
| Seagate Announces Closing of Exchanges with Holders of $500 Million Principal Amount of Exchangeable Notes | Press release | Business Wire | -1.50% | — | |
| Form 8-K Seagate Technology Holdi For: Nov 04 | SEC filing · Form 8-K | SEC EDGAR | +3.64% | +6.77% | |
| Seagate Announces Exchanges With Holders of $500 Million Principal Amount of Exchangeable Notes | Press release | Business Wire | +3.64% | +6.77% | |
| Form 10-Q Seagate Technology Holdi For: Oct 03 | SEC filing · Form 10-Q | SEC EDGAR | +0.03% | -7.57% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the STX section they belong to.
Where else STX is measured.
STX earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Leidos Holdings, Inc. (LDOS) | 636 | -0.04% | 47% |
| MoSys, Inc. (MOSY) | 631 | -0.06% | 40% |
| Lattice Semiconductor Corporation (LSCC) | 627 | -0.06% | 45% |
| Fair Isaac Corporation (FICO) | 625 | +0.07% | 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.
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How the numbers are made.
How is Seagate Technology Holdings PLC - Ordinary Shares (Ireland)'s median reaction calculated?
Every labeled STX 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 630 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. 57% of STX'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 STX'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.