SEACOR Marine Holdings Inc. (SMHI)
SMHI moved a median of +0.20% 30 minutes after news, and -0.59% by the close. How SMHI actually reacts to news — the realized, point-in-time move the market made, measured across 183 labeled events over the last three years with zero look-ahead.
SMHI’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.04% | 50% | 179 |
| 30-min | +0.20% | 55% | 183 |
| 60-min | +0.43% | 57% | 183 |
| to close | -0.59% | 43% | 179 |
| Middle 50% of SMHI reactions | -0.77% to +1.75% |
|---|---|
| Median reaction (30-min) | +0.20% |
| Measured reactions | 183 |
Half of all SEACOR Marine Holdings Inc. news events land between -0.77% and +1.75% 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 SMHI moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SMHI's baseline. Nothing else.
Recent SMHI events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 10-Q SEACOR Marine Holdings For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -5.18% | +5.07% | |
| Form 8-K SEACOR Marine Holdings For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | -5.18% | +5.07% | |
| SEACOR Marine Announces Second Quarter 2026 Results And Strategic Alternatives Review | Press release | GlobeNewswire | -5.18% | +5.07% | |
| Major SEACOR Marine Shareholder Yoav Saffar Calls on Board to Initiate a Strategic Review to Unlock Shareholder Value | Press release | PR Newswire | +0.52% | +4.02% | |
| Largest Independent Shareholder of SEACOR Marine Holdings Inc., Jorey Chernett, Calls on Board to Initiate Comprehensive Evaluation of Strategic Alternatives, Including a Sale of the Company or Dual-Track Fleet Sale | Press release | PR Newswire | +4.03% | +14.10% | |
| SEACOR Marine Acknowledges Receipt of Letter by Shareholder | Press release | GlobeNewswire | -0.51% | -0.25% | |
| Form 8-K SEACOR Marine Holdings For: Jun 02 | SEC filing · Form 8-K | SEC EDGAR | -0.27% | -2.00% | |
| Form 8-K SEACOR Marine Holdings For: May 20 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | -1.23% | |
| Form 10-Q SEACOR Marine Holdings For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +2.14% | +8.57% | |
| Form 8-K SEACOR Marine Holdings For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | +2.14% | +8.57% | |
| SEACOR Marine Announces First Quarter 2026 Results | Press release | GlobeNewswire | +2.14% | +8.57% | |
| Form ARS SEACOR Marine Holdings For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.61% | +0.81% | |
| Form DEF 14A SEACOR Marine Holdings For: Jun 02 | SEC filing · Form DEF | SEC EDGAR | +0.61% | +0.81% | |
| Form 10-K SEACOR Marine Holdings For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.69% | -6.51% | |
| Form 8-K SEACOR Marine Holdings For: Feb 25 | SEC filing · Form 8-K | SEC EDGAR | +0.69% | -6.51% | |
| SEACOR Marine Announces Fourth Quarter 2025 Results | Press release | GlobeNewswire | +0.69% | -6.51% | |
| Form 10-Q SEACOR Marine Holdings For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.31% | -0.63% | |
| Form 8-K SEACOR Marine Holdings For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | +0.31% | -0.63% | |
| SEACOR Marine Announces Third Quarter 2025 Results | Press release | GlobeNewswire | +0.31% | -0.63% | |
| Form 8-K SEACOR Marine Holdings For: Sep 29 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.28% | |
| Form 8-K SEACOR Marine Holdings For: Sep 09 | SEC filing · Form 8-K | SEC EDGAR | -0.16% | +1.93% | |
| Form 8-K SEACOR Marine Holdings For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +2.49% | +3.38% | |
| SEACOR Marine Announces Strategic Sale of Vessels | Press release | GlobeNewswire | +2.49% | +3.38% | |
| Form 10-Q SEACOR Marine Holdings For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.16% | -1.96% | |
| Form 8-K SEACOR Marine Holdings For: Jul 30 | SEC filing · Form 8-K | SEC EDGAR | +2.16% | -1.96% | |
| SEACOR Marine Announces Second Quarter 2025 Results | Press release | GlobeNewswire | +2.16% | -1.96% | |
| Form 8-K SEACOR Marine Holdings For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +2.05% | |
| Form S-8 SEACOR Marine Holdings | SEC filing · Form S-8 | SEC EDGAR | -0.44% | -6.46% | |
| Form 10-Q SEACOR Marine Holdings For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.05% | -3.35% | |
| Form 8-K SEACOR Marine Holdings For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | +1.05% | -3.35% | |
| SEACOR Marine Announces First Quarter 2025 Results | Press release | GlobeNewswire | +1.05% | -3.35% | |
| Form ARS SEACOR Marine Holdings For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -2.50% | +9.13% | |
| Form DEF 14A SEACOR Marine Holdings For: Jun 03 | SEC filing · Form DEF | SEC EDGAR | -2.50% | +9.13% | |
| Form 8-K SEACOR Marine Holdings For: Apr 04 | SEC filing · Form 8-K | SEC EDGAR | +3.41% | +14.90% | |
| SEACOR Marine Announces Securities Repurchase | Press release | GlobeNewswire | +3.41% | +14.90% | |
| Form 8-K SEACOR Marine Holdings For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -1.20% | -1.03% | |
| Form 10-K SEACOR Marine Holdings For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -1.64% | -2.29% | |
| Form 8-K SEACOR Marine Holdings For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -1.64% | -2.29% | |
| SEACOR Marine Announces Fourth Quarter 2024 Results | Press release | GlobeNewswire | -1.64% | -2.29% | |
| Form EFFECT SEACOR Marine Holdings | SEC filing · Form EFFECT | SEC EDGAR | -0.88% | -1.76% | |
| Form S-3 SEACOR Marine Holdings | SEC filing · Form S-3 | SEC EDGAR | -0.15% | -1.32% | |
| Form 8-K SEACOR Marine Holdings For: Nov 27 | SEC filing · Form 8-K | SEC EDGAR | +4.46% | +1.58% | |
| SEACOR Marine Announces Complete Debt Refinancing, Newbuild Orders, and Vessel Sales | Press release | GlobeNewswire | +4.46% | +1.58% | |
| Form 10-Q SEACOR Marine Holdings For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.94% | -13.04% | |
| Form 8-K SEACOR Marine Holdings For: Oct 30 | SEC filing · Form 8-K | SEC EDGAR | -2.94% | -13.04% | |
| SEACOR Marine Announces Third Quarter 2024 Results | Press release | GlobeNewswire | -2.94% | -13.04% | |
| Form 8-K SEACOR Marine Holdings For: Sep 19 | SEC filing · Form 8-K | SEC EDGAR | -1.28% | -0.99% | |
| SEACOR Marine Announces Appointment to the Board of Directors | Press release | GlobeNewswire | -1.28% | -0.99% | |
| Form 8-K SEACOR Marine Holdings For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | -2.05% | -1.51% | |
| Form 10-Q SEACOR Marine Holdings For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.38% | -7.20% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SMHI section they belong to.
Where else SMHI is measured.
SMHI earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Icahn Enterprises L.P. - Depositary Units representing Limited Partner Interests (IEP) | 187 | 0.00% | 49% |
| PASSUR AEROSPACE INC (PSSR) | 187 | 0.00% | 12% |
| FORUM MERGER II CORP UNIT (FMCIU) | 182 | 0.00% | 26% |
| Safe Bulkers, Inc ($0.001 par value) (SB) | 182 | +0.27% | 56% |
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 SEACOR Marine Holdings Inc.'s median reaction calculated?
Every labeled SMHI 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 183 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. 55% of SMHI'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 SMHI'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.