Kosmos Energy Ltd. Common Shares (DE) (KOS)
KOS moved a median of +0.17% 30 minutes after news, and +0.18% by the close. How KOS actually reacts to news — the realized, point-in-time move the market made, measured across 376 labeled events over the last three years with zero look-ahead.
KOS’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 46% | 365 |
| 30-min | +0.17% | 53% | 375 |
| 60-min | +0.29% | 54% | 375 |
| to close | +0.18% | 51% | 376 |
| Middle 50% of KOS reactions | -0.73% to +0.83% |
|---|---|
| Median reaction (30-min) | +0.17% |
| Measured reactions | 376 |
Half of all Kosmos Energy Ltd. Common Shares (DE) news events land between -0.73% and +0.83% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How KOS reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 15 | -1.12% | 40% | +0.52% |
| Analyst downgrades | 23 | -0.90% | 48% | -1.32% |
| Coverage initiations | 14 | +0.34% | 71% | -0.47% |
| Rating reiterations | 30 | 0.00% | 47% | -0.67% |
| Price-target cuts | 13 | -0.14% | 39% | -0.78% |
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. 1 further class was observed with fewer than 10 measured events and is not published. See how KOS ranks against every other measured name →
That’s how KOS usually reacts — get an email when it moves on news →Email me when KOS moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to KOS's baseline. Nothing else.
Recent KOS events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Kosmos Energy to Host Third Quarter 2026 Results and Webcast on November 2, 2026 | Press release | GlobeNewswire | +1.25% | +0.74% | |
| Form 8-K Kosmos Energy Ltd. For: Sep 18 | SEC filing · Form 8-K | SEC EDGAR | +0.39% | +1.54% | |
| Form 8-K Kosmos Energy Ltd. For: Sep 08 | SEC filing · Form 8-K | SEC EDGAR | -0.17% | -1.38% | |
| Form 10-Q Kosmos Energy Ltd. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.15% | -2.69% | |
| Form 8-K Kosmos Energy Ltd. For: Aug 03 | SEC filing · Form 8-K | SEC EDGAR | -0.78% | -0.78% | |
| Kosmos Energy Announces Second Quarter 2026 Results | Press release | GlobeNewswire | -0.78% | -0.78% | |
| Kosmos Energy to Host Second Quarter 2026 Results and Webcast on August 3, 2026 | Press release | GlobeNewswire | +1.19% | +4.74% | |
| Kosmos Energy Provides Operational Update | Press release | GlobeNewswire | +3.13% | +0.48% | |
| Form 8-K Kosmos Energy Ltd. For: Jun 22 | SEC filing · Form 8-K | SEC EDGAR | -1.04% | -4.56% | |
| Form SD Kosmos Energy Ltd. | SEC filing · Form SD | SEC EDGAR | -1.04% | -4.56% | |
| Kosmos Energy Announces Completion of Sale of Equatorial Guinea Production Assets to Panoro Energy | Press release | GlobeNewswire | -1.00% | +0.00% | |
| Form S-8 Kosmos Energy Ltd. | SEC filing · Form S-8 | SEC EDGAR | +0.00% | +0.00% | |
| Form 8-K Kosmos Energy Ltd. For: May 28 | SEC filing · Form 8-K | SEC EDGAR | +0.18% | +2.94% | |
| Form 10-Q Kosmos Energy Ltd. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.38% | -0.34% | |
| Form 8-K Kosmos Energy Ltd. For: May 05 | SEC filing · Form 8-K | SEC EDGAR | -0.63% | -1.27% | |
| Kosmos Energy Announces First Quarter 2026 Results | Press release | GlobeNewswire | -0.63% | -1.27% | |
| Form ARS Kosmos Energy Ltd. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +2.49% | +0.77% | |
| Form DEF 14A Kosmos Energy Ltd. For: May 28 | SEC filing · Form DEF | SEC EDGAR | +2.49% | +0.77% | |
| Form DEFA14A Kosmos Energy Ltd. | SEC filing · Form DEFA14A | SEC EDGAR | +2.49% | +0.77% | |
| Kosmos Energy to Host First Quarter 2026 Results and Webcast on May 5, 2026 | Press release | GlobeNewswire | +0.21% | +2.79% | |
| Form 8-K Kosmos Energy Ltd. For: Mar 10 | SEC filing · Form 8-K | SEC EDGAR | +4.00% | +3.56% | |
| Kosmos Energy Announces Launch of Public Offering of Common Stock | Press release | GlobeNewswire | -1.01% | +2.55% | |
| Kosmos Energy Announces Pricing of Public Offering of Common Stock | Press release | GlobeNewswire | -1.01% | +2.55% | |
| Form 10-K Kosmos Energy Ltd. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.35% | +7.87% | |
| Form 8-K Kosmos Energy Ltd. For: Mar 02 | SEC filing · Form 8-K | SEC EDGAR | -8.30% | -5.88% | |
| Kosmos Energy Announces Fourth Quarter And Full Year 2025 Results | Press release | GlobeNewswire | -8.30% | -5.88% | |
| Form 8-K Kosmos Energy Ltd. For: Feb 24 | SEC filing · Form 8-K | SEC EDGAR | -2.37% | -7.11% | |
| Kosmos Energy Announces Sale of Equatorial Guinea Production Assets to Panoro Energy for up to $219.5 Million | Press release | Business Wire | -2.37% | -7.11% | |
| Kosmos Energy Announces Ratification of Ghana License Extensions by Parliament and Provides Trading Update | Press release | Business Wire | +4.82% | +9.64% | |
| Kosmos Energy to Host Fourth Quarter 2025 Results and Webcast on March 2, 2026 | Press release | Business Wire | +2.35% | -8.72% | |
| Form 8-K Kosmos Energy Ltd. For: Jan 29 | SEC filing · Form 8-K | SEC EDGAR | +0.94% | +5.63% | |
| Form 8-K Kosmos Energy Ltd. For: Jan 26 | SEC filing · Form 8-K | SEC EDGAR | +1.97% | +8.66% | |
| Kosmos Energy Announces Pricing of Nordic Bond Issue | Press release | Business Wire | +0.00% | +1.20% | |
| Form 8-K Kosmos Energy Ltd. For: Jan 12 | SEC filing · Form 8-K | SEC EDGAR | -1.80% | +7.29% | |
| Kosmos Energy Announces Launch of Nordic Bond Issue and Cash Tender Offer for 7.750% Senior Notes Due 2027 | Press release | Business Wire | -1.80% | +7.29% | |
| Kosmos Energy Provides Operational and Financial Update | Press release | Business Wire | +8.00% | -1.00% | |
| Form 8-K Kosmos Energy Ltd. For: Jan 02 | SEC filing · Form 8-K | SEC EDGAR | -1.45% | -2.25% | |
| Form 10-Q Kosmos Energy Ltd. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.67% | |
| Form 8-K Kosmos Energy Ltd. For: Nov 03 | SEC filing · Form 8-K | SEC EDGAR | -4.86% | +2.78% | |
| Kosmos Energy Announces Third Quarter 2025 Results | Press release | Business Wire | -4.86% | +2.78% | |
| Kosmos Energy to Host Third Quarter 2025 Results and Webcast on November 03, 2025 | Press release | Business Wire | -0.27% | -1.61% | |
| Kosmos Energy Provides Update on Financial Progress | Press release | Business Wire | +1.23% | +6.75% | |
| Form 8-K Kosmos Energy Ltd. For: Sep 24 | SEC filing · Form 8-K | SEC EDGAR | +1.23% | +6.75% | |
| Kosmos Energy Enters Into Senior Secured Term Loan Facility With Shell for up to $250 Million | Press release | Business Wire | +0.28% | +0.56% | |
| Form 8-K Kosmos Energy Ltd. For: Aug 22 | SEC filing · Form 8-K | SEC EDGAR | +1.37% | +3.30% | |
| Form 10-Q Kosmos Energy Ltd. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -1.81% | |
| Form 8-K Kosmos Energy Ltd. For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -2.91% | +0.53% | |
| Kosmos Energy Announces Second Quarter 2025 Results | Press release | Business Wire | -2.91% | +0.53% | |
| Kosmos Energy to Host Second Quarter 2025 Results and Webcast on August 04, 2025 | Press release | Business Wire | +0.99% | +5.94% | |
| Kosmos Energy Confirms Commercial Operations Date Reached for Golar’s FLNG Gimi at Greater Tortue Ahmeyim | Press release | Business Wire | -0.23% | -9.09% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the KOS section they belong to.
Where else KOS is measured.
KOS earnings → · Analyst actions → · SEC filings →
Other Energy names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| AEGEAN MARINE PETROLEUM (ANW) | 391 | 0.00% | 50% |
| Delek US Holdings, Inc. (DK) | 381 | 0.00% | 50% |
| ConocoPhillips (COP) | 372 | +0.06% | 54% |
| Calumet, Inc (CLMT) | 368 | +0.11% | 52% |
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 Energy names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Kosmos Energy Ltd. Common Shares (DE)'s median reaction calculated?
Every labeled KOS 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 376 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 KOS'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 KOS'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.