Prosperity Bancshares, Inc. (PB)
PB moved a median of +0.07% 30 minutes after news, and +0.02% by the close. How PB actually reacts to news — the realized, point-in-time move the market made, measured across 346 labeled events over the last three years with zero look-ahead.
PB’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.03% | 54% | 344 |
| 30-min | +0.07% | 57% | 346 |
| 60-min | +0.07% | 54% | 346 |
| to close | +0.02% | 52% | 345 |
| Middle 50% of PB reactions | -0.27% to +0.50% |
|---|---|
| Median reaction (30-min) | +0.07% |
| Measured reactions | 346 |
Half of all Prosperity Bancshares, Inc. news events land between -0.27% and +0.50% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How PB reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 29 | -0.02% | 41% | +0.09% |
| Analyst downgrades | 40 | +0.18% | 70% | -0.23% |
| Coverage initiations | 22 | +0.23% | 55% | +0.73% |
| Rating reiterations | 75 | +0.01% | 51% | +0.01% |
| Price-target raises | 24 | -0.01% | 46% | -0.11% |
| Price-target cuts | 18 | +0.13% | 61% | +0.04% |
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 PB ranks against every other measured name →
That’s how PB usually reacts — get an email when it moves on news →Email me when PB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to PB's baseline. Nothing else.
Recent PB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| PROSPERITY BANCSHARES, INC.® INVITES YOU TO JOIN ITS THIRD QUARTER 2026 EARNINGS CONFERENCE CALL | Press release | PR Newswire | +0.27% | +1.41% | |
| Form 8-K/A PROSPERITY BANCSHARES For: Jul 01 | SEC filing · Form 8-K | SEC EDGAR | -0.52% | -1.09% | |
| Form 13F-HR PROSPERITY BANCSHARES For: Jun 30 | SEC filing · Form 13F-HR | SEC EDGAR | -0.06% | +0.19% | |
| Form 10-Q PROSPERITY BANCSHARES For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.05% | +0.43% | |
| Form 8-K PROSPERITY BANCSHARES For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | +0.54% | +1.82% | |
| PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2026 EARNINGS | Press release | PR Newswire | +0.54% | +1.82% | |
| PROSPERITY BANCSHARES, INC.® ANNOUNCES COMMON STOCK DIVIDEND | Press release | PR Newswire | -0.99% | +0.07% | |
| Form 8-K PROSPERITY BANCSHARES For: Jul 01 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | +0.34% | |
| PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH STELLAR BANCORP, INC. | Press release | PR Newswire | -0.14% | +0.34% | |
| PROSPERITY BANCSHARES, INC.® INVITES YOU TO JOIN ITS SECOND QUARTER 2026 EARNINGS CONFERENCE CALL | Press release | PR Newswire | -0.49% | -0.15% | |
| Form 11-K PROSPERITY BANCSHARES For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.27% | +0.56% | |
| Form 13F-HR PROSPERITY BANCSHARES For: Mar 31 | SEC filing · Form 13F-HR | SEC EDGAR | -0.04% | -1.73% | |
| Form 10-Q PROSPERITY BANCSHARES For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.30% | -1.52% | |
| Form 8-K PROSPERITY BANCSHARES For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | -0.64% | -2.55% | |
| PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2026 EARNINGS | Press release | PR Newswire | -0.64% | -2.55% | |
| Form 8-K PROSPERITY BANCSHARES For: Apr 21 | SEC filing · Form 8-K | SEC EDGAR | -0.13% | -0.51% | |
| Form 8-K PROSPERITY BANCSHARES For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | -0.65% | -0.01% | |
| Form EFFECT PROSPERITY BANCSHARES | SEC filing · Form EFFECT | SEC EDGAR | -0.65% | -0.01% | |
| PROSPERITY BANCSHARES AND STELLAR BANCORP ANNOUNCE RECEIPT OF REGULATORY APPROVALS FOR PROSPERITY'S PENDING ACQUISITION OF STELLAR | Press release | PR Newswire | -0.65% | -0.01% | |
| PROSPERITY BANCSHARES, INC.® ANNOUNCES COMMON STOCK DIVIDEND | Press release | PR Newswire | -0.13% | -0.51% | |
| Form S-4/A PROSPERITY BANCSHARES | SEC filing · Form S-4 | SEC EDGAR | +0.43% | -0.90% | |
| Form S-4/A PROSPERITY BANCSHARES | SEC filing · Form S-4 | SEC EDGAR | +0.53% | +0.72% | |
| PROSPERITY BANCSHARES, INC.® INVITES YOU TO JOIN ITS FIRST QUARTER 2026 EARNINGS CONFERENCE CALL | Press release | PR Newswire | +0.62% | -0.85% | |
| Form S-4 PROSPERITY BANCSHARES | SEC filing · Form S-4 | SEC EDGAR | +0.46% | +0.52% | |
| Form ARS PROSPERITY BANCSHARES For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.03% | -0.26% | |
| Form DEF 14A PROSPERITY BANCSHARES For: Mar 11 | SEC filing · Form DEF | SEC EDGAR | -0.03% | -0.26% | |
| Form 10-K PROSPERITY BANCSHARES For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.13% | -1.14% | |
| Form 13F-HR PROSPERITY BANCSHARES For: Dec 31 | SEC filing · Form 13F-HR | SEC EDGAR | +0.70% | +0.33% | |
| Form 8-K PROSPERITY BANCSHARES For: Feb 02 | SEC filing · Form 8-K | SEC EDGAR | +1.90% | +1.84% | |
| PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH SOUTHWEST BANCSHARES, INC. | Press release | PR Newswire | +1.90% | +1.84% | |
| Form 8-K PROSPERITY BANCSHARES For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | +0.10% | +2.30% | |
| Form 8-K PROSPERITY BANCSHARES For: Jan 28 | SEC filing · Form 8-K | SEC EDGAR | -3.32% | -1.31% | |
| PROSPERITY BANCSHARES, INC.® AND STELLAR BANCORP, INC. ANNOUNCE MERGER | Press release | PR Newswire | -3.32% | -1.31% | |
| PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2025 EARNINGS | Press release | PR Newswire | -3.32% | -1.31% | |
| PROSPERITY BANCSHARES, INC.® ANNOUNCES STOCK REPURCHASE PROGRAM | Press release | PR Newswire | -0.60% | +0.23% | |
| SOUTHWEST BANCSHARES, INC. SHAREHOLDERS APPROVE ACQUISITION BY PROSPERITY BANCSHARES, INC.® | Press release | PR Newswire | +0.14% | -2.85% | |
| PROSPERITY BANCSHARES, INC.® ANNOUNCES COMMON STOCK DIVIDEND | Press release | PR Newswire | -1.03% | -0.36% | |
| Form 8-K PROSPERITY BANCSHARES For: Jan 02 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | +1.08% | |
| PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH AMERICAN BANK HOLDING CORPORATION | Press release | PR Newswire | +0.70% | +1.08% | |
| Form EFFECT PROSPERITY BANCSHARES | SEC filing · Form EFFECT | SEC EDGAR | +0.74% | -0.07% | |
| PROSPERITY BANCSHARES, INC.® INVITES YOU TO JOIN ITS FOURTH QUARTER 2025 EARNINGS CONFERENCE CALL | Press release | PR Newswire | +0.74% | -0.07% | |
| Form S-4/A PROSPERITY BANCSHARES | SEC filing · Form S-4 | SEC EDGAR | -0.18% | -0.90% | |
| Form S-4 PROSPERITY BANCSHARES | SEC filing · Form S-4 | SEC EDGAR | -0.44% | -1.00% | |
| Form 10-Q PROSPERITY BANCSHARES For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.24% | +2.49% | |
| AMERICAN BANK HOLDING CORPORATION SHAREHOLDERS APPROVE ACQUISITION BY PROSPERITY BANCSHARES, INC.® | Press release | PR Newswire | +0.30% | +0.72% | |
| Form 8-K PROSPERITY BANCSHARES For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | +1.29% | +3.74% | |
| PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2025 EARNINGS | Press release | PR Newswire | +1.29% | +3.74% | |
| PROSPERITY BANCSHARES, INC.® INCREASES COMMON STOCK DIVIDEND | Press release | PR Newswire | -0.38% | -1.33% | |
| Form 8-K PROSPERITY BANCSHARES For: Oct 01 | SEC filing · Form 8-K | SEC EDGAR | +0.44% | +0.66% | |
| Form EFFECT PROSPERITY BANCSHARES | SEC filing · Form EFFECT | SEC EDGAR | +0.44% | +0.66% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the PB section they belong to.
Where else PB is measured.
PB earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| CorVel Corp. (CRVL) | 346 | +0.03% | 51% |
| Metropolitan Bank Holding Corp. (MCB) | 346 | +0.12% | 54% |
| Peoples Financial Services Corp. (PFIS) | 345 | -0.10% | 38% |
| Thomson Reuters Corp - Common Shares (TRI) | 345 | +0.08% | 55% |
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 Prosperity Bancshares, Inc.'s median reaction calculated?
Every labeled PB 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 346 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. 57% of PB'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 PB'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.