Northfield Bancorp, Inc. (NFBK)
NFBK moved a median of +0.04% 30 minutes after news, and 0.00% by the close. How NFBK actually reacts to news — the realized, point-in-time move the market made, measured across 217 labeled events over the last three years with zero look-ahead.
NFBK’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 45% | 197 |
| 30-min | +0.04% | 53% | 202 |
| 60-min | +0.08% | 55% | 202 |
| to close | 0.00% | 43% | 202 |
| Middle 50% of NFBK reactions | -0.16% to +0.36% |
|---|---|
| Median reaction (30-min) | +0.04% |
| Measured reactions | 217 |
Half of all Northfield Bancorp, Inc. news events land between -0.16% and +0.36% 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 NFBK moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to NFBK's baseline. Nothing else.
Recent NFBK events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K Northfield Bancorp, Inc. For: Jul 20 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Northfield Bancorp, Inc. For: Jun 25 | SEC filing · Form 8-K | SEC EDGAR | +0.20% | -0.27% | |
| Form 11-K Northfield Bancorp, Inc. For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.55% | +2.60% | |
| Form DEFM14A Northfield Bancorp, Inc. | SEC filing · Form DEFM14A | SEC EDGAR | +0.33% | -0.21% | |
| Form 10-Q Northfield Bancorp, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.07% | +0.07% | |
| Are KW, THR, NFBK, WBS Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | +0.03% | -0.18% | |
| Form 10-K/A Northfield Bancorp, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.02% | +0.07% | |
| Form 8-K Northfield Bancorp, Inc. For: Apr 20 | SEC filing · Form 8-K | SEC EDGAR | +0.04% | -1.13% | |
| Northfield Bancorp, Inc. Announces First Quarter 2026 Results | Press release | GlobeNewswire | +0.36% | -0.87% | |
| Form 10-K Northfield Bancorp, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.07% | -0.15% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: Northfield Bancorp Inc. (Nasdaq - NFBK), Coterra Energy Inc. (NYSE - CTRA), Exact Sciences Corporation (Nasdaq – EXAS), Semrush Holdings, Inc. (NYSE – SEMR) | Press release | GlobeNewswire | -0.06% | -0.20% | |
| Form 8-K/A Northfield Bancorp, Inc. For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.00% | |
| Form 8-K Northfield Bancorp, Inc. For: Feb 04 | SEC filing · Form 8-K | SEC EDGAR | -0.07% | -0.57% | |
| Halper Sadeh LLC Encourages PKST, CTRA, NFBK, FFWM Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | +0.73% | -0.51% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: Northfield Bancorp Inc. (Nasdaq - NFBK), Coterra Energy Inc. (NYSE - CTRA), Exact Sciences Corporation (Nasdaq – EXAS), Semrush Holdings, Inc. (NYSE – SEMR) | Press release | GlobeNewswire | -0.07% | +0.00% | |
| Form 8-K Northfield Bancorp, Inc. For: Feb 02 | SEC filing · Form 8-K | SEC EDGAR | +0.37% | +0.44% | |
| Columbia Financial, Inc. and Northfield Bancorp, Inc. Announce Plans to Merge | Press release | GlobeNewswire | -2.16% | -0.72% | |
| Form 8-K Northfield Bancorp, Inc. For: Jan 31 | SEC filing · Form 8-K | SEC EDGAR | -2.16% | -0.72% | |
| NFBK Stock Alert: Halper Sadeh LLC is Investigating Whether the Merger of Northfield Bancorp, Inc. is Fair to Shareholders | Press release | Business Wire | -2.16% | -0.72% | |
| Northfield Bancorp, Inc. Announces Strategic Transaction and Fourth Quarter and Year End 2025 Results | Press release | GlobeNewswire | -2.16% | -0.72% | |
| Form 8-K Northfield Bancorp, Inc. For: Nov 10 | SEC filing · Form 8-K | SEC EDGAR | +0.10% | +0.10% | |
| Form 10-Q Northfield Bancorp, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.05% | +1.00% | |
| Form 8-K Northfield Bancorp, Inc. For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | +0.61% | |
| Northfield Bancorp, Inc. Announces Third Quarter 2025 Results | Press release | GlobeNewswire | -0.98% | -4.63% | |
| Form 10-Q Northfield Bancorp, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.05% | +0.61% | |
| Form 8-K Northfield Bancorp, Inc. For: Jul 23 | SEC filing · Form 8-K | SEC EDGAR | +0.54% | -1.54% | |
| Northfield Bancorp, Inc. Announces Second Quarter 2025 Results | Press release | GlobeNewswire | +0.40% | +0.80% | |
| Form 11-K Northfield Bancorp, Inc. For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.09% | +1.45% | |
| Form 8-K Northfield Bancorp, Inc. For: May 28 | SEC filing · Form 8-K | SEC EDGAR | -0.21% | -1.56% | |
| Form 8-K Northfield Bancorp, Inc. For: May 27 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.43% | |
| Form 10-Q Northfield Bancorp, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.35% | |
| Form 8-K Northfield Bancorp, Inc. For: Apr 23 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.00% | |
| Northfield Bancorp, Inc. Announces First Quarter 2025 Results | Press release | GlobeNewswire | -1.33% | +1.11% | |
| Form ARS Northfield Bancorp, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.29% | +0.71% | |
| Form DEF 14A Northfield Bancorp, Inc. For: May 28 | SEC filing · Form DEF | SEC EDGAR | -0.21% | -0.42% | |
| Form DEFA14A Northfield Bancorp, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | -0.94% | -0.31% | |
| Form 10-K Northfield Bancorp, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | -1.72% | |
| Form 8-K Northfield Bancorp, Inc. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -0.13% | +0.70% | |
| Form 8-K Northfield Bancorp, Inc. For: Jan 24 | SEC filing · Form 8-K | SEC EDGAR | -0.09% | +0.00% | |
| Form 8-K Northfield Bancorp, Inc. For: Jan 22 | SEC filing · Form 8-K | SEC EDGAR | +0.68% | -1.10% | |
| Northfield Bancorp, Inc. Announces Fourth Quarter and Year End 2024 Results | Press release | GlobeNewswire | +1.35% | +3.04% | |
| Steve M. Klein, Chairman and CEO of Northfield Bank, Elected to the Board of Directors of the Federal Home Loan Bank of New York | Press release | GlobeNewswire | -0.19% | -7.50% | |
| Form 10-Q Northfield Bancorp, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.30% | -2.09% | |
| Form 8-K Northfield Bancorp, Inc. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | +0.17% | +1.02% | |
| Form 8-K Northfield Bancorp, Inc. For: Oct 23 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -3.77% | |
| Northfield Bancorp, Inc. Announces Third Quarter 2024 Results | Press release | GlobeNewswire | +0.00% | -3.13% | |
| John P. Connors, Jr. Named Chair of the Northfield Bank Foundation | Press release | GlobeNewswire | +0.21% | +0.25% | |
| Form 10-Q Northfield Bancorp, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.54% | +0.90% | |
| Form 8-K Northfield Bancorp, Inc. For: Jul 24 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.09% | |
| Northfield Bancorp, Inc. Announces Second Quarter 2024 Results | Press release | GlobeNewswire | -0.88% | +2.08% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the NFBK section they belong to.
Where else NFBK is measured.
NFBK earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Nuveen Intermediate Duration Municipal Term Fund Common Shares of Beneficial Interest (NID) | 218 | 0.00% | 46% |
| QNB Corp. (QNBC) | 218 | 0.00% | 49% |
| Virtus Investment Partners, Inc. (VRTS) | 217 | 0.00% | 43% |
| Kayne Anderson Energy Infrastructure Fund, Inc. (KYN) | 216 | 0.00% | 50% |
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 Northfield Bancorp, Inc.'s median reaction calculated?
Every labeled NFBK 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 217 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. 53% of NFBK'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 NFBK'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.