Leidos Holdings, Inc. (LDOS)
LDOS moved a median of -0.04% 30 minutes after news, and -0.02% by the close. How LDOS actually reacts to news — the realized, point-in-time move the market made, measured across 636 labeled events over the last three years with zero look-ahead.
LDOS’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 49% | 636 |
| 30-min | -0.04% | 47% | 636 |
| 60-min | -0.03% | 48% | 636 |
| to close | -0.02% | 49% | 632 |
| Middle 50% of LDOS reactions | -0.42% to +0.34% |
|---|---|
| Median reaction (30-min) | -0.04% |
| Measured reactions | 636 |
Half of all Leidos Holdings, Inc. news events land between -0.42% and +0.34% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How LDOS reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 31 | -0.23% | 36% | -0.28% |
| Analyst downgrades | 35 | -0.09% | 43% | -0.12% |
| Coverage initiations | 15 | +0.07% | 53% | +0.32% |
| Rating reiterations | 97 | +0.07% | 55% | -0.07% |
| Price-target raises | 48 | -0.02% | 42% | -0.15% |
| Price-target cuts | 18 | +0.32% | 61% | +0.14% |
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 LDOS ranks against every other measured name →
That’s how LDOS usually reacts — get an email when it moves on news →Email me when LDOS moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to LDOS's baseline. Nothing else.
Recent LDOS events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| MOD extends Leidos LCST contract, continuing critical logistics support to UK defence | Press release | PR Newswire | +1.14% | +0.91% | |
| Leidos participates at U.S. Army's Reveille Forge 'permanent hackathon' | Press release | PR Newswire | -0.02% | -0.44% | |
| Leidos Selects X-Bow to Provide Rocket Motors for U.S. Army's Low-Cost Cruise Missile | Press release | PR Newswire | +0.02% | -0.69% | |
| Leidos names Stephen Vather senior vice president of investor relations | Press release | PR Newswire | -0.19% | -0.58% | |
| Leidos Schedules Third Quarter 2026 Earnings Conference Call for November 3, 2026, at 8 a.m. (ET) | Press release | PR Newswire | -0.53% | -1.13% | |
| Analogic and Leidos Complete Combination of Security Enterprise Solutions Businesses | Press release | Business Wire | -0.08% | +1.66% | |
| Form 8-K Leidos Holdings, Inc. For: Oct 05 | SEC filing · Form 8-K | SEC EDGAR | -0.08% | +1.66% | |
| Leidos Security Enterprise Solutions and Analogic close deal to strengthen global security screening capabilities | Press release | PR Newswire | -0.08% | +1.66% | |
| Form 8-K Leidos Holdings, Inc. For: Oct 01 | SEC filing · Form 8-K | SEC EDGAR | +0.76% | -1.65% | |
| Leidos appoints AT&T COO Jeff McElfresh to board of directors | Press release | PR Newswire | +0.76% | -1.65% | |
| Leidos launches agentic AI platform to speed response to cyber threats | Press release | PR Newswire | +0.00% | +1.09% | |
| Leidos to support extended ARTEMIS airborne ISR mission for U.S. Army | Press release | PR Newswire | +0.15% | -0.60% | |
| Leidos to keep 650,000 Navy and Marine Corps personnel securely connected worldwide | Press release | PR Newswire | -0.13% | -0.96% | |
| Leidos to participate in the Jefferies 2026 Global Industrials Conference | Press release | PR Newswire | +0.02% | -1.70% | |
| Leidos autonomy earns its place at RIMPAC and with carrier strike group | Press release | PR Newswire | +0.06% | -0.60% | |
| Leidos to support Naval Health Research Center with studies to improve health and readiness of U.S. service members | Press release | PR Newswire | +0.14% | -2.03% | |
| Leidos to strengthen cyber defenses across Department of War networks | Press release | PR Newswire | -0.23% | -0.29% | |
| Form 10-Q Leidos Holdings, Inc. For: Jul 03 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +1.41% | |
| Form 8-K Leidos Holdings, Inc. For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -0.31% | +2.92% | |
| Leidos Delivers Strong Second Quarter and Enhances Full-Year Guidance | Press release | PR Newswire | -0.31% | +2.92% | |
| Leidos continues to strengthen U.S. Navy's secure intelligence operations | Press release | PR Newswire | +0.21% | +1.18% | |
| Leidos selected to provide flight-proven infrared sensors to Sierra Space for missile defense satellites in support of Golden Dome for America | Press release | PR Newswire | +0.25% | +0.75% | |
| Leidos Holdings, Inc. declares quarterly cash dividend, share repurchase program | Press release | PR Newswire | +0.56% | +0.88% | |
| Leidos and CoreWeave collaborate to accelerate delivery of AI capabilities for defense, national security and intelligence missions | Press release | PR Newswire | -1.24% | -0.16% | |
| Leidos introduces new AI platform to find, fix cybersecurity vulnerabilities | Press release | PR Newswire | -1.03% | -2.87% | |
| US Air Force awards Leidos ISR operations support task order worth up to $717 million | Press release | PR Newswire | +0.47% | +0.45% | |
| Leidos demonstrates tactical cyber detection capability during Valiant Shield 2026 | Press release | PR Newswire | +0.41% | +2.31% | |
| Leidos and DHL form alliance to strengthen the future of UK Defence logistics | Press release | PR Newswire | +0.36% | -2.44% | |
| Leidos and Rune accelerate AI-enabled logistics to support Indo-Pacific military operations | Press release | PR Newswire | +0.02% | +0.43% | |
| Leidos Schedules Second Quarter 2026 Earnings Conference Call for August 4, 2026, at 8 a.m. (ET) | Press release | PR Newswire | +0.19% | -1.27% | |
| Leidos and The Modern Data Company to organize fragmented federal data into actionable insights | Press release | PR Newswire | -0.42% | -3.33% | |
| Form 11-K Leidos Holdings, Inc. For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.44% | -0.45% | |
| New Leidos SATCOM tool boosts combat connectivity, effectiveness | Press release | PR Newswire | -0.45% | -1.64% | |
| Form SD Leidos Holdings, Inc. | SEC filing · Form SD | SEC EDGAR | +0.59% | -1.07% | |
| Leidos to help strengthen global IT operations for the U.S. Department of State under Evolve contract | Press release | PR Newswire | -1.13% | -0.26% | |
| Leidos to build initial 3,000 low-cost containerized munitions through Department of War framework agreement | Press release | PR Newswire | -0.33% | -0.70% | |
| Leidos to Accelerate Hypersonic Weapons Production for U.S. Army and Navy | Press release | PR Newswire | +1.80% | +1.33% | |
| Form 8-K Leidos Holdings, Inc. For: May 01 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | -1.93% | |
| Form 10-Q Leidos Holdings, Inc. For: Apr 03 | SEC filing · Form 10-Q | SEC EDGAR | -0.23% | -4.73% | |
| Form 8-K Leidos Holdings, Inc. For: May 05 | SEC filing · Form 8-K | SEC EDGAR | -0.36% | -9.95% | |
| Leidos Posts Strong First Quarter Results and Raises Full-Year Guidance | Press release | PR Newswire | -0.36% | -9.95% | |
| Form S-8 Leidos Holdings, Inc. | SEC filing · Form S-8 | SEC EDGAR | +0.83% | +0.04% | |
| Leidos Holdings, Inc. Declares Quarterly Cash Dividend | Press release | PR Newswire | +0.83% | +0.04% | |
| Leidos receives $869 million Army contract to accelerate military decision making | Press release | PR Newswire | -0.08% | +2.56% | |
| Leidos to support over 4.7 million service members and families through Military OneSource | Press release | PR Newswire | +0.43% | -0.17% | |
| Leidos receives $617 million from U.S. Army for air defense launchers | Press release | PR Newswire | -0.31% | -1.53% | |
| Med Tech Solutions Appoints Dan Stoke as Chief Growth Officer and Matt Trevorrow as Chief Information Officer | Press release | PR Web | -0.83% | -0.47% | |
| Leidos, Havoc integrate capabilities to advance maritime and air autonomy | Press release | PR Newswire | -0.20% | -0.41% | |
| Analogic & Leidos Security Enterprise Solutions Announce Intent to Combine Under Analogic Leadership | Press release | Business Wire | +0.41% | +1.60% | |
| Form 8-K Leidos Holdings, Inc. For: Apr 14 | SEC filing · Form 8-K | SEC EDGAR | +0.41% | +1.60% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the LDOS section they belong to.
Where else LDOS is measured.
LDOS earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Sunrun Inc. (RUN) | 637 | -0.08% | 47% |
| Coherent Corp. (COHR) | 636 | -0.02% | 48% |
| MoSys, Inc. (MOSY) | 631 | -0.06% | 40% |
| Seagate Technology Holdings PLC - Ordinary Shares (Ireland) (STX) | 630 | +0.17% | 57% |
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 Leidos Holdings, Inc.'s median reaction calculated?
Every labeled LDOS 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 636 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. 47% of LDOS'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 LDOS'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.