Brookline Bancorp, Inc. (BRKL)
BRKL moved a median of +0.16% 30 minutes after news, and +0.08% by the close. How BRKL actually reacts to news — the realized, point-in-time move the market made, measured across 149 labeled events over the last three years with zero look-ahead.
BRKL’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 47% | 124 |
| 30-min | +0.16% | 59% | 124 |
| 60-min | +0.23% | 60% | 124 |
| to close | +0.08% | 50% | 123 |
| Middle 50% of BRKL reactions | -0.24% to +0.68% |
|---|---|
| Median reaction (30-min) | +0.16% |
| Measured reactions | 149 |
Half of all Brookline Bancorp, Inc. news events land between -0.24% and +0.68% 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 BRKL moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to BRKL's baseline. Nothing else.
Recent BRKL events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G BROOKLINE BANCORP INC | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form 8-K BROOKLINE BANCORP INC For: Sep 01 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-8 POS BROOKLINE BANCORP INC | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 8-K BROOKLINE BANCORP INC For: Aug 26 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Berkshire Hills Bancorp and Brookline Bancorp Receive Regulatory Approvals for Merger of Equals to form Beacon Financial Corporation | Press release | GlobeNewswire | +0.46% | +1.64% | |
| Form 8-K BROOKLINE BANCORP INC For: Aug 25 | SEC filing · Form 8-K | SEC EDGAR | +0.46% | +1.64% | |
| Form 10-Q BROOKLINE BANCORP INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.01% | +0.25% | |
| Berkshire Hills Bancorp and Brookline Bancorp to be Combined as Beacon Financial Corporation and Beacon Bank Upon the Closing of their Merger of Equals | Press release | GlobeNewswire | -0.58% | -1.66% | |
| Form 8-K BROOKLINE BANCORP INC For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -0.58% | -1.66% | |
| Brookline Bancorp Announces Second Quarter Results | Press release | GlobeNewswire | +0.14% | -1.28% | |
| Form 8-K BROOKLINE BANCORP INC For: Jul 23 | SEC filing · Form 8-K | SEC EDGAR | +0.14% | -1.28% | |
| Brookline Bancorp, Inc. Announces Second Quarter 2025 Earnings Release Date and Conference Call | Press release | GlobeNewswire | -0.18% | +0.54% | |
| Form 8-K BROOKLINE BANCORP INC For: May 21 | SEC filing · Form 8-K | SEC EDGAR | +1.12% | +0.98% | |
| Form 8-K BROOKLINE BANCORP INC For: May 09 | SEC filing · Form 8-K | SEC EDGAR | +2.02% | +0.83% | |
| Form DEFA14A BROOKLINE BANCORP INC | SEC filing · Form DEFA14A | SEC EDGAR | +2.02% | +0.83% | |
| Form 10-Q BROOKLINE BANCORP INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.09% | +0.89% | |
| Brookline Bancorp Announces First Quarter Results | Press release | GlobeNewswire | +6.72% | +9.66% | |
| Form 8-K BROOKLINE BANCORP INC For: Apr 23 | SEC filing · Form 8-K | SEC EDGAR | +6.72% | +9.66% | |
| Form DEFM14A BROOKLINE BANCORP INC | SEC filing · Form DEFM14A | SEC EDGAR | +1.37% | +7.29% | |
| Brookline Bancorp, Inc. Announces First Quarter 2025 Earnings Release Date and Conference Call | Press release | GlobeNewswire | -1.58% | -4.94% | |
| Form 10-K/A BROOKLINE BANCORP INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.32% | -0.23% | |
| Form 10-K BROOKLINE BANCORP INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | -1.39% | |
| Brookline Bancorp Announces Fourth Quarter Results | Press release | GlobeNewswire | +4.33% | +6.50% | |
| Form 8-K BROOKLINE BANCORP INC For: Jan 29 | SEC filing · Form 8-K | SEC EDGAR | +4.33% | +6.50% | |
| Brookline Bancorp, Inc. Announces Fourth Quarter 2024 Earnings Release Date and Conference Call | Press release | GlobeNewswire | -0.70% | -0.70% | |
| BRKL Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of Brookline Bancorp, Inc. Is Fair to Shareholders | Press release | Business Wire | +0.11% | -0.48% | |
| Form 8-K BROOKLINE BANCORP INC For: Dec 16 | SEC filing · Form 8-K | SEC EDGAR | -0.64% | -0.71% | |
| Form DEFA14A BROOKLINE BANCORP INC | SEC filing · Form DEFA14A | SEC EDGAR | -0.64% | -0.71% | |
| Form 10-Q BROOKLINE BANCORP INC For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.16% | +0.08% | |
| Brookline Bancorp Announces Third Quarter Results | Press release | GlobeNewswire | +0.37% | -1.59% | |
| Form 8-K BROOKLINE BANCORP INC For: Oct 23 | SEC filing · Form 8-K | SEC EDGAR | +0.37% | -1.59% | |
| Brookline Bancorp, Inc. Announces Third Quarter 2024 Earnings Release Date and Conference Call | Press release | GlobeNewswire | -0.41% | -0.71% | |
| Form 10-Q BROOKLINE BANCORP INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.21% | +0.32% | |
| Brookline Bancorp Announces Second Quarter Results | Press release | GlobeNewswire | -2.13% | +0.97% | |
| Form 8-K BROOKLINE BANCORP INC For: Jul 24 | SEC filing · Form 8-K | SEC EDGAR | -2.13% | +0.97% | |
| Brookline Bancorp, Inc. Announces Second Quarter 2024 Earnings Release Date and Conference Call | Press release | GlobeNewswire | -0.41% | -1.17% | |
| Form 8-K BROOKLINE BANCORP INC For: May 08 | SEC filing · Form 8-K | SEC EDGAR | -0.22% | -1.68% | |
| Form 10-Q BROOKLINE BANCORP INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.11% | -1.85% | |
| Brookline Bancorp Announces First Quarter Results | Press release | GlobeNewswire | -1.99% | -6.86% | |
| Form 8-K BROOKLINE BANCORP INC For: Apr 24 | SEC filing · Form 8-K | SEC EDGAR | -1.99% | -6.86% | |
| Brookline Bancorp, Inc. Announces First Quarter 2024 Earnings Release Date and Conference Call | Press release | GlobeNewswire | +1.06% | -0.21% | |
| Form ARS BROOKLINE BANCORP INC For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -1.91% | -2.51% | |
| Form DEF 14A BROOKLINE BANCORP INC For: Dec 31 | SEC filing · Form DEF | SEC EDGAR | -1.91% | -2.51% | |
| Form DEFA14A BROOKLINE BANCORP INC | SEC filing · Form DEFA14A | SEC EDGAR | -1.91% | -2.51% | |
| Form 10-K/A BROOKLINE BANCORP INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.45% | -1.14% | |
| Form 10-K BROOKLINE BANCORP INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.15% | -0.10% | |
| Brookline Bancorp Announces Fourth Quarter Results | Press release | GlobeNewswire | +2.83% | +2.38% | |
| Brookline Bancorp, Inc. Announces 2024 Virtual Annual Meeting Information | Press release | GlobeNewswire | +2.83% | +2.38% | |
| Brookline Bancorp, Inc. Chief Operations Officer James Cosman to Retire | Press release | GlobeNewswire | +0.00% | +0.00% | |
| Form 8-K BROOKLINE BANCORP INC For: Jan 24 | SEC filing · Form 8-K | SEC EDGAR | +2.83% | +2.38% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the BRKL section they belong to.
Where else BRKL is measured.
BRKL earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Citizens Community Bancorp, Inc. (CZWI) | 151 | +0.07% | 54% |
| NUVEEN CA MUNI VALUE 2 (NCB) | 151 | 0.00% | 20% |
| Capitol Federal Financial, Inc. (CFFN) | 149 | 0.00% | 44% |
| PPDAI GROUP INC (PPDF) | 149 | 0.00% | 46% |
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 Brookline Bancorp, Inc.'s median reaction calculated?
Every labeled BRKL 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 149 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. 59% of BRKL'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 BRKL'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.