Southwest Gas Holdings, Inc. (DE) (SWX)
SWX moved a median of +0.11% 30 minutes after news, and 0.00% by the close. How SWX actually reacts to news — the realized, point-in-time move the market made, measured across 365 labeled events over the last three years with zero look-ahead.
SWX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 34% | 365 |
| 30-min | +0.11% | 61% | 365 |
| 60-min | +0.06% | 55% | 365 |
| to close | 0.00% | 50% | 363 |
| Middle 50% of SWX reactions | -0.31% to +0.53% |
|---|---|
| Median reaction (30-min) | +0.11% |
| Measured reactions | 365 |
Half of all Southwest Gas Holdings, Inc. (DE) news events land between -0.31% and +0.53% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How SWX reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 31 | +0.01% | 52% | +0.42% |
| Coverage initiations | 10 | -0.23% | 10% | -0.20% |
| Rating reiterations | 15 | +0.26% | 60% | +0.21% |
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. 3 further classes were observed with fewer than 10 measured events and are not published. See how SWX ranks against every other measured name →
That’s how SWX usually reacts — get an email when it moves on news →Email me when SWX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SWX's baseline. Nothing else.
Recent SWX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Southwest Gas Holdings Declares Fourth Quarter 2026 Dividend | Press release | PR Newswire | -0.44% | -0.51% | |
| Southwest Gas Holdings Releases 2025 Sustainability Report | Press release | PR Newswire | +0.03% | +0.41% | |
| Southwest Gas Holdings, Inc. Reports Second Quarter 2026 Financial Results, Reaffirms Full-Year 2026 Guidance | Press release | PR Newswire | -1.40% | +1.01% | |
| Southwest Gas Holdings, Inc. to Report Second Quarter 2026 Results on August 5, 2026 | Press release | PR Newswire | +0.41% | +0.78% | |
| Southwest Gas Holdings Declares Third Quarter 2026 Dividend | Press release | PR Newswire | +0.31% | +1.64% | |
| Form 11-K Southwest Gas Holdings, For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.09% | +1.60% | |
| Southwest Gas Foundation Kicks Off 60th Anniversary with 'Month of Giving' in June | Press release | PR Newswire | -0.15% | -0.72% | |
| Form 8-K Southwest Gas Holdings, For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -0.81% | +0.35% | |
| Molly R. Carson and Leezie Kim Join Board of Directors for Southwest Gas Holdings | Press release | PR Newswire | -0.08% | -0.81% | |
| Southwest Gas Holdings, Inc. Reports First Quarter 2026 Financial Results, Affirms Full-Year 2026 and Long-Term Guidance | Press release | PR Newswire | -0.56% | +1.81% | |
| Southwest Gas Holdings, Inc. to Report First Quarter 2026 Results on May 5, 2026 | Press release | PR Newswire | +0.24% | +0.65% | |
| Southwest Gas Holdings Declares Second Quarter 2026 Dividend | Press release | PR Newswire | +0.00% | +0.73% | |
| Form ARS Southwest Gas Holdings, For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.49% | +1.39% | |
| Form DEF 14A Southwest Gas Holdings, For: May 07 | SEC filing · Form DEF | SEC EDGAR | +0.49% | +1.39% | |
| Form DEFA14A Southwest Gas Holdings, | SEC filing · Form DEFA14A | SEC EDGAR | +0.49% | +1.39% | |
| Southwest Gas Holdings Announces CEO Succession Plan | Press release | PR Newswire | -4.21% | +2.50% | |
| Southwest Gas Holdings, Inc. Reports Fourth Quarter and Full-Year 2025 Financial Results | Press release | PR Newswire | -4.21% | +2.50% | |
| Southwest Gas Holdings, Inc. to Report Fourth Quarter and Full Year 2025 Results on February 25, 2026 | Press release | PR Newswire | -0.46% | -0.23% | |
| Form 8-K Southwest Gas Holdings, For: Feb 11 | SEC filing · Form 8-K | SEC EDGAR | +0.31% | +0.88% | |
| Form 8-K Southwest Gas Holdings, For: Feb 06 | SEC filing · Form 8-K | SEC EDGAR | -1.24% | +0.94% | |
| TIME Recognizes Southwest Gas Holdings as a Best Mid-Size Company in America for Two Consecutive Years | Press release | PR Newswire | -0.12% | +1.23% | |
| Form 8-K Southwest Gas Holdings, For: Jan 09 | SEC filing · Form 8-K | SEC EDGAR | +0.44% | +0.49% | |
| Form 8-K Southwest Gas Holdings, For: Dec 31 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.21% | |
| Great Basin Gas Transmission Company Announces Close of Second Supplemental Open Season and Execution of Associated Binding Precedent Agreements for Natural Gas Expansion in Northern Nevada | Press release | PR Newswire | +0.64% | +1.20% | |
| Southwest Gas Names Justin S. Forsberg Chief Financial Officer | Press release | PR Newswire | +0.01% | +0.67% | |
| Southwest Gas Holdings Declares First Quarter 2026 Dividend | Press release | PR Newswire | +0.30% | +1.11% | |
| Form 8-K Southwest Gas Holdings, For: Oct 31 | SEC filing · Form 8-K | SEC EDGAR | +0.58% | -0.37% | |
| Southwest Gas Holdings, Inc. Reports Third Quarter 2025 Financial Results, Southwest Gas 2025 Net Income Expected Toward Top End of Guidance Range | Press release | PR Newswire | +3.33% | +2.60% | |
| Southwest Gas Initiates CFO Transition | Press release | PR Newswire | +3.33% | +2.60% | |
| Southwest Gas Holdings, Inc. to Report Third Quarter 2025 Results on November 5, 2025 | Press release | PR Newswire | +0.28% | +0.65% | |
| Form 8-K Southwest Gas Holdings, For: Oct 14 | SEC filing · Form 8-K | SEC EDGAR | -0.04% | +0.72% | |
| Southwest Gas Holdings Announces Release of 2024 Sustainability Report | Press release | PR Newswire | +0.06% | -0.52% | |
| Southwest Gas Holdings Declares Fourth Quarter 2025 Dividend | Press release | PR Newswire | -0.08% | +0.56% | |
| Form 8-K Southwest Gas Holdings, For: Sep 03 | SEC filing · Form 8-K | SEC EDGAR | -0.47% | -2.37% | |
| Southwest Gas Holdings Announces Completion of Centuri Separation | Press release | PR Newswire | -0.47% | -2.37% | |
| Southwest Gas Holdings Announces Launch of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | -0.19% | -1.10% | |
| Southwest Gas Holdings Announces Pricing of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | -0.19% | -1.10% | |
| Form 8-K/A Southwest Gas Holdings, For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | -1.68% | |
| Form 8-K Southwest Gas Holdings, For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +0.16% | — | |
| Southwest Gas Holdings Announces Closing of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | -0.35% | — | |
| Southwest Gas Holdings Announces Launch of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | -0.28% | -0.72% | |
| Southwest Gas Holdings Announces Pricing of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | -0.28% | -0.72% | |
| Southwest Gas Holdings, Inc. Reports Second Quarter 2025 Financial Results, Reaffirms Guidance | Press release | PR Newswire | +0.58% | +0.50% | |
| Southwest Gas Holdings, Inc. to Report Second Quarter 2025 Results on August 6, 2025 | Press release | PR Newswire | +0.26% | +0.67% | |
| Form 8-K Southwest Gas Holdings, For: Jul 08 | SEC filing · Form 8-K | SEC EDGAR | +0.10% | +1.87% | |
| Form 8-K Southwest Gas Holdings, For: Jun 27 | SEC filing · Form 8-K | SEC EDGAR | +0.16% | +0.00% | |
| Form 11-K Southwest Gas Holdings, For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.02% | +0.81% | |
| Form 8-K Southwest Gas Holdings, For: Jun 13 | SEC filing · Form 8-K | SEC EDGAR | +0.59% | -0.15% | |
| Southwest Gas Holdings Announces Closing of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | +0.59% | -0.15% | |
| Southwest Gas Holdings Announces Launch of Secondary Public Offering of Centuri Holdings, Inc. Common Stock | Press release | PR Newswire | -0.15% | +2.33% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SWX section they belong to.
Where else SWX is measured.
SWX earnings → · Analyst actions → · SEC filings →
Other Utilities names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Avangrid, Inc. (AGR) | 369 | 0.00% | 43% |
| ENAGAS SA UNSP/ADR (ENGGY) | 367 | 0.00% | 40% |
| AQUAVENTURE HOLDINGS LTD (WAAS) | 365 | 0.00% | 50% |
| DTE Energy Company (DTE) | 357 | +0.02% | 54% |
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 Utilities names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Southwest Gas Holdings, Inc. (DE)'s median reaction calculated?
Every labeled SWX 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 365 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. 61% of SWX'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 SWX'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.