W.R. Berkley Corporation (WRB)
WRB moved a median of +0.19% 30 minutes after news, and +0.04% by the close. How WRB actually reacts to news — the realized, point-in-time move the market made, measured across 240 labeled events over the last three years with zero look-ahead.
WRB’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.07% | 61% | 240 |
| 30-min | +0.19% | 63% | 240 |
| 60-min | +0.19% | 58% | 240 |
| to close | +0.04% | 53% | 238 |
| Middle 50% of WRB reactions | -0.20% to +0.64% |
|---|---|
| Median reaction (30-min) | +0.19% |
| Measured reactions | 240 |
Half of all W.R. Berkley Corporation news events land between -0.20% and +0.64% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How WRB reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 30 | -0.21% | 43% | -0.31% |
| Analyst downgrades | 65 | +0.25% | 59% | +0.35% |
| Coverage initiations | 17 | +0.17% | 53% | -0.59% |
| Rating reiterations | 110 | +0.05% | 54% | -0.10% |
| Price-target raises | 45 | +0.01% | 53% | -0.07% |
| Price-target cuts | 26 | -0.17% | 42% | -0.06% |
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 WRB ranks against every other measured name →
That’s how WRB usually reacts — get an email when it moves on news →Email me when WRB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to WRB's baseline. Nothing else.
Recent WRB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| W. R. Berkley Corporation to Announce Third Quarter 2026 Earnings on October 19, 2026 | Press release | Business Wire | -0.01% | -0.47% | |
| W. R. Berkley Corporation Declares Regular Quarterly Cash Dividend | Press release | Business Wire | -1.24% | -1.51% | |
| Form N-PX BERKLEY W R CORP For: Jun 30 | SEC filing · Form N-PX | SEC EDGAR | +0.31% | +0.50% | |
| Form 13F-HR/A BERKLEY W R CORP For: Jun 30 | SEC filing · Form 13F-HR | SEC EDGAR | -0.13% | -1.67% | |
| W. R. Berkley Corporation Forms Berkley Meridian | Press release | Business Wire | +0.18% | -1.05% | |
| Form 13F-HR BERKLEY W R CORP For: Jun 30 | SEC filing · Form 13F-HR | SEC EDGAR | +0.93% | -0.64% | |
| Form 10-Q BERKLEY W R CORP For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.12% | -0.50% | |
| W. R. Berkley Corporation Names Christopher L. Moede President of Berkley Risk | Press release | Business Wire | -0.26% | -0.21% | |
| W. R. Berkley Corporation Announces Senior Executive Appointments | Press release | Business Wire | +0.13% | -0.34% | |
| Form 8-K BERKLEY W R CORP For: Jul 20 | SEC filing · Form 8-K | SEC EDGAR | +1.99% | -0.74% | |
| W. R. Berkley Corporation Reports Second Quarter 2026 Results | Press release | Business Wire | +1.99% | -0.74% | |
| W. R. Berkley Corporation Names Paul J. Stock President of Carolina Casualty | Press release | Business Wire | +0.06% | -1.73% | |
| Form 8-K BERKLEY W R CORP For: Jun 26 | SEC filing · Form 8-K | SEC EDGAR | -0.12% | +0.04% | |
| AM Best Upgrades Issuer Credit Ratings of W. R. Berkley Corporation and Its Subsidiaries | Press release | Business Wire | +0.11% | +1.67% | |
| Form 11-K BERKLEY W R CORP For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.11% | +1.67% | |
| W. R. Berkley Corporation Names John Enright President of Berkley Specialty London | Press release | Business Wire | +0.11% | +1.67% | |
| W. R. Berkley Corporation to Announce Second Quarter 2026 Earnings on July 20, 2026 | Press release | Business Wire | -0.63% | +1.59% | |
| Form 8-K BERKLEY W R CORP For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | +1.59% | |
| Form 8-K BERKLEY W R CORP For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | +0.35% | -0.95% | |
| W. R. Berkley Corporation Names Kirk A. Parker President of Berkley North Pacific | Press release | Business Wire | +0.35% | -0.95% | |
| W. R. Berkley Corporation Announces the Passing of Its Founder and Executive Chairman, William R. Berkley | Press release | Business Wire | +0.16% | +0.67% | |
| Form 8-K BERKLEY W R CORP For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -0.52% | -1.55% | |
| W. R. Berkley Corporation Declares Special Dividend, Increases Regular Quarterly Cash Dividend 11.1%, and Increases Share Repurchase Authorization | Press release | Business Wire | +0.34% | -0.82% | |
| Form 13F-HR BERKLEY W R CORP For: Mar 31 | SEC filing · Form 13F-HR | SEC EDGAR | +0.67% | +3.41% | |
| Form 10-Q BERKLEY W R CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.24% | +0.45% | |
| W. R. Berkley Corporation Names R. Christopher DeLauder President of Berkley Environmental | Press release | Business Wire | -1.44% | -2.10% | |
| Form ARS BERKLEY W R CORP For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.98% | +0.40% | |
| Form DEF 14A BERKLEY W R CORP For: Jun 03 | SEC filing · Form DEF | SEC EDGAR | -0.98% | +0.40% | |
| Form DEFA14A BERKLEY W R CORP | SEC filing · Form DEFA14A | SEC EDGAR | -0.98% | +0.40% | |
| Form 8-K BERKLEY W R CORP For: Apr 21 | SEC filing · Form 8-K | SEC EDGAR | -1.32% | -0.37% | |
| W. R. Berkley Corporation Reports First Quarter 2026 Results | Press release | Business Wire | -1.32% | -0.37% | |
| W. R. Berkley Corporation Names Christopher T. Reichardt President of Berkley Oil & Gas | Press release | Business Wire | +0.58% | +1.77% | |
| Preferred Employers Insurance, a Berkley Company, Welcomes Steve Houk as Vice President and Head of Distribution | Press release | PR Newswire | +0.03% | +0.38% | |
| Raphael & Associates Appoints Blake Namba as Chief Claims Officer | Press release | PR Web | +0.13% | +0.67% | |
| Preferred Employers Insurance, a Berkley company, Announces the Promotion of Lorena Hawkins to AVP Underwriting | Press release | PR Newswire | +0.11% | -1.37% | |
| W. R. Berkley Corporation to Announce First Quarter 2026 Earnings on April 21, 2026 | Press release | Business Wire | -0.79% | -1.52% | |
| W. R. Berkley Corporation Names Ryan Miller President of Berkley Southeast | Press release | Business Wire | +0.01% | +0.10% | |
| Midwest Employers Casualty Celebrates 40 Years of Making a Difference | Press release | Business Wire | -0.10% | +1.42% | |
| Form 10-K BERKLEY W R CORP For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.13% | +2.12% | |
| Form 13F-HR BERKLEY W R CORP For: Dec 31 | SEC filing · Form 13F-HR | SEC EDGAR | -0.09% | +0.57% | |
| W. R. Berkley Corporation Declares Regular Quarterly Cash Dividend | Press release | Business Wire | -0.09% | +0.57% | |
| Form 8-K BERKLEY W R CORP For: Jan 26 | SEC filing · Form 8-K | SEC EDGAR | -1.91% | -1.87% | |
| W. R. Berkley Corporation Reports Fourth Quarter and Full Year 2025 Results | Press release | Business Wire | -1.91% | -1.87% | |
| W. R. Berkley Corporation Increases Share Repurchase Authorization | Press release | Business Wire | +0.42% | +1.17% | |
| W. R. Berkley Corporation to Announce Fourth Quarter and Full Year 2025 Earnings on January 26, 2026 | Press release | Business Wire | +0.10% | -0.78% | |
| Form 8-K BERKLEY W R CORP For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | +0.07% | +0.07% | |
| W. R. Berkley Corporation Announces Executive Appointments | Press release | Business Wire | -0.98% | -0.59% | |
| W. R. Berkley Corporation Names Erin Rotz President of Berkley Fire & Marine | Press release | Business Wire | -0.03% | +0.04% | |
| Form 8-K BERKLEY W R CORP For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | -1.43% | -1.94% | |
| W. R. Berkley Corporation Declares Special and Regular Quarterly Cash Dividends | Press release | Business Wire | +0.10% | -1.26% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the WRB section they belong to.
Where else WRB is measured.
WRB earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Princeton Bancorp, Inc. (BPRN) | 240 | 0.00% | 32% |
| Capital Southwest Corporation (CSWC) | 240 | -0.12% | 37% |
| Brighthouse Financial, Inc. (BHF) | 239 | -0.06% | 46% |
| Berkshire Hills Bancorp, Inc. (BHLB) | 239 | -0.27% | 33% |
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 Financial Services names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is W.R. Berkley Corporation's median reaction calculated?
Every labeled WRB 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 240 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. 63% of WRB'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 WRB'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.