Somnigroup International Inc. (SGI)
SGI moved a median of +0.08% 30 minutes after news, and -0.04% by the close. How SGI actually reacts to news — the realized, point-in-time move the market made, measured across 202 labeled events over the last three years with zero look-ahead.
SGI’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.01% | 51% | 202 |
| 30-min | +0.08% | 54% | 202 |
| 60-min | -0.08% | 42% | 202 |
| to close | -0.04% | 50% | 200 |
| Middle 50% of SGI reactions | -0.82% to +0.74% |
|---|---|
| Median reaction (30-min) | +0.08% |
| Measured reactions | 202 |
Half of all Somnigroup International Inc. news events land between -0.82% and +0.74% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How SGI reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 11 | +0.16% | 73% | -0.21% |
| Rating reiterations | 32 | -0.02% | 41% | -0.24% |
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. 4 further classes were observed with fewer than 10 measured events and are not published. See how SGI ranks against every other measured name →
That’s how SGI usually reacts — get an email when it moves on news →Email me when SGI moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SGI's baseline. Nothing else.
Recent SGI events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Somnigroup to Report Third Quarter 2026 Financial Results | Press release | PR Newswire | +0.68% | +2.53% | |
| Leggett Dynamics Expands Asia Pacific Headquarters | Press release | ACCESS Newswire | -0.03% | +0.97% | |
| Leggett Dynamics Showcases Award-Finalist Innovations at Automotive News Congress in Detroit | Press release | ACCESS Newswire | +0.34% | -0.68% | |
| Form S-8 SOMNIGROUP INTERNATIONAL | SEC filing · Form S-8 | SEC EDGAR | +0.34% | -0.68% | |
| Form S-8 POS SOMNIGROUP INTERNATIONAL | SEC filing · Form S-8 | SEC EDGAR | +0.34% | -0.68% | |
| New Mattress Firm Report Finds Sleep and Exercise are Mutually Beneficial | Press release | PR Newswire | -1.31% | -2.18% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Aug 26 | SEC filing · Form 8-K | SEC EDGAR | +0.01% | -0.68% | |
| Somnigroup Completes Combination with Leggett & Platt | Press release | PR Newswire | -0.13% | -0.77% | |
| Somnigroup International Announces New President of Leggett & Platt | Press release | PR Newswire | +0.32% | -0.63% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Aug 25 | SEC filing · Form 8-K | SEC EDGAR | +0.30% | +0.39% | |
| Form 10-Q SOMNIGROUP INTERNATIONAL For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.85% | +0.26% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +0.60% | -0.20% | |
| Form POSASR SOMNIGROUP INTERNATIONAL | SEC filing · Form POSASR | SEC EDGAR | +0.85% | +0.26% | |
| Somnigroup Announces Third Quarter Cash Dividend | Press release | PR Newswire | +0.60% | -0.20% | |
| Somnigroup International Inc. Reports Second Quarter 2026 Results | Press release | PR Newswire | +0.60% | -0.20% | |
| Mattress Firm Expands Kingsdown® Wesley Collection Nationwide Following Strong Customer Response and Category-Leading Performance | Press release | PR Newswire | +2.22% | +3.94% | |
| Mattress Firm's Best Sale of the Year Returns with Big Savings on Better Sleep | Press release | PR Newswire | -2.53% | -1.51% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Jul 27 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | -1.69% | |
| Somnigroup Announces Refinancing of Credit Facilities | Press release | PR Newswire | -0.14% | -1.69% | |
| Tempur Sealy Canada and Mega Group Advance Support for Families with Critically Sick and Injured Children across Canada | Press release | Canada Newswire | +0.38% | +0.71% | |
| Somnigroup to Report Second Quarter 2026 Financial Results | Press release | PR Newswire | +0.06% | +1.13% | |
| Form EFFECT SOMNIGROUP INTERNATIONAL | SEC filing · Form EFFECT | SEC EDGAR | +0.31% | -2.02% | |
| Form S-4/A SOMNIGROUP INTERNATIONAL | SEC filing · Form S-4 | SEC EDGAR | +0.53% | +2.11% | |
| Most Americans Are Falling Short on Recommended Sleep Duration, New National Sleep Foundation and Tempur-Pedic Research Finds | Press release | PR Newswire | -0.34% | +1.84% | |
| National Sleep Foundation and Tempur-Pedic Compare Notes on What's Keeping the Nation Awake | Press release | PR Newswire | -0.34% | +1.84% | |
| Form S-4 SOMNIGROUP INTERNATIONAL | SEC filing · Form S-4 | SEC EDGAR | +0.67% | +1.52% | |
| Mattress Firm Heats Up Summer Savings with its Annual July 4th Sale | Press release | PR Newswire | -0.34% | -2.99% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | +1.21% | +0.13% | |
| Form SD SOMNIGROUP INTERNATIONAL | SEC filing · Form SD | SEC EDGAR | -0.35% | +2.72% | |
| Celebrity Makeup Artist Sir John Teams Up with Mattress Firm on Beauty Sleep Edit | Press release | PR Newswire | +0.23% | -0.39% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: May 13 | SEC filing · Form 8-K | SEC EDGAR | -0.57% | -1.35% | |
| Form 10-Q SOMNIGROUP INTERNATIONAL For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.93% | -2.46% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +0.19% | -10.09% | |
| Somnigroup Announces Second Quarter Cash Dividend | Press release | PR Newswire | +0.19% | -10.09% | |
| Somnigroup International Inc. Reports First Quarter 2026 Results | Press release | PR Newswire | +0.19% | -10.09% | |
| Form DEFA14A SOMNIGROUP INTERNATIONAL | SEC filing · Form DEFA14A | SEC EDGAR | +0.67% | +0.05% | |
| Mattress Firm Kicks Off Summer with Its Most Dream-Worthy Memorial Day Sale | Press release | PR Newswire | +0.23% | -0.28% | |
| Somnigroup to Report First Quarter 2026 Financial Results | Press release | PR Newswire | +0.70% | -1.11% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Apr 13 | SEC filing · Form 8-K | SEC EDGAR | +2.67% | +3.74% | |
| Somnigroup International, the World's Leading Bedding Company, to Acquire Leggett & Platt, A Diversified Component Manufacturer and Key Somnigroup Supplier, in an All-Stock Transaction | Press release | PR Newswire | +2.67% | +3.74% | |
| Form DEF 14A SOMNIGROUP INTERNATIONAL For: Mar 31 | SEC filing · Form DEF | SEC EDGAR | -1.56% | -0.23% | |
| Form DEFA14A SOMNIGROUP INTERNATIONAL | SEC filing · Form DEFA14A | SEC EDGAR | -1.56% | -0.23% | |
| Mattress Firm Wins Two Good Housekeeping 2026 Bedding Awards | Press release | PR Newswire | -0.59% | +1.85% | |
| Form PRE 14A SOMNIGROUP INTERNATIONAL For: Mar 18 | SEC filing · Form PRE | SEC EDGAR | +0.09% | -0.39% | |
| Americans Know How to Sleep Better -- So Why Aren't They? State of Sleep Survey Reveals Americans' Bedtime Preferences and Obstacles | Press release | PR Newswire | -1.00% | +2.59% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Mar 04 | SEC filing · Form 8-K | SEC EDGAR | -0.47% | -1.20% | |
| National Sleep Foundation and Tempur-Pedic Announce New Research Collaboration | Press release | PR Newswire | -0.14% | +0.15% | |
| Tempur-Pedic and National Sleep Foundation Team Up to Discover What's Really Keeping Americans Awake | Press release | PR Newswire | -0.14% | +0.15% | |
| Form 10-K SOMNIGROUP INTERNATIONAL For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.14% | +0.15% | |
| Form 8-K SOMNIGROUP INTERNATIONAL For: Feb 17 | SEC filing · Form 8-K | SEC EDGAR | +0.90% | -1.81% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SGI section they belong to.
Where else SGI is measured.
SGI earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Somnigroup International Inc.'s median reaction calculated?
Every labeled SGI 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 202 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. 54% of SGI'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 SGI'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.