United Security Bancshares (UBFO)
UBFO moved a median of 0.00% 30 minutes after news, and -0.11% by the close. How UBFO actually reacts to news — the realized, point-in-time move the market made, measured across 283 labeled events over the last three years with zero look-ahead.
UBFO’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 35% | 165 |
| 30-min | 0.00% | 45% | 218 |
| 60-min | 0.00% | 45% | 236 |
| to close | -0.11% | 47% | 249 |
| Middle 50% of UBFO reactions | 0.00% to +0.65% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 283 |
Half of all United Security Bancshares news events land between +0.00% and +0.65% 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 UBFO moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to UBFO's baseline. Nothing else.
Recent UBFO events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G UNITED SECURITY BANCSHAR | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form S-8 POS UNITED SECURITY BANCSHAR | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 8-K UNITED SECURITY BANCSHAR For: Apr 01 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K UNITED SECURITY BANCSHAR For: Mar 30 | SEC filing · Form 8-K | SEC EDGAR | -0.43% | +1.06% | |
| Form 10-K UNITED SECURITY BANCSHAR For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +0.19% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Mar 20 | SEC filing · Form 8-K | SEC EDGAR | +0.59% | +0.78% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Mar 16 | SEC filing · Form 8-K | SEC EDGAR | — | -1.74% | |
| Form DEFM14A UNITED SECURITY BANCSHAR | SEC filing · Form DEFM14A | SEC EDGAR | +0.00% | +2.19% | |
| Halper Sadeh LLC is Investigating Whether CWAN, UBFO, CWBC are Obtaining Fair Deals for their Shareholders | Press release | GlobeNewswire | — | -0.09% | |
| Halper Sadeh LLC Encourages WAT, TWO, UBFO, ALEX Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | — | +0.33% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Jan 22 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.75% | |
| United Security Bancshares Reports Fourth Quarter 2025 Earnings | Press release | Business Wire | +0.00% | -0.75% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Dec 17 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.29% | |
| Community West Bancshares and United Security Bancshares to Merge | Press release | Business Wire | -0.38% | -1.34% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Dec 16 | SEC filing · Form 8-K | SEC EDGAR | -0.38% | -1.34% | |
| UBFO Stock Alert: Halper Sadeh LLC is Investigating Whether the Sale of United Security Bancshares is Fair to Shareholders | Press release | Business Wire | — | +0.98% | |
| United Security Bancshares Declares Quarterly Cash Dividend | Press release | Business Wire | +1.25% | -0.39% | |
| Form 10-Q UNITED SECURITY BANCSHAR For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +0.62% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Oct 16 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +4.65% | |
| United Security Bancshares Reports Second Quarter 2025 Earnings | Press release | Business Wire | +0.00% | +4.65% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Sep 23 | SEC filing · Form 8-K | SEC EDGAR | — | -0.72% | |
| United Security Bancshares Declares Quarterly Cash Dividend | Press release | Business Wire | — | -0.72% | |
| Form 10-Q UNITED SECURITY BANCSHAR For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +0.57% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Jul 17 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.27% | |
| United Security Bancshares Reports Second Quarter 2025 Earnings | Press release | Business Wire | +0.00% | -2.27% | |
| Form 11-K UNITED SECURITY BANCSHAR For: Jun 30 | SEC filing · Form 11-K | SEC EDGAR | — | +0.47% | |
| Form NT 11-K UNITED SECURITY BANCSHAR For: Dec 31 | SEC filing · Form NT | SEC EDGAR | +1.59% | +0.67% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Jun 24 | SEC filing · Form 8-K | SEC EDGAR | — | +0.18% | |
| United Security Bancshares Declares Quarterly Cash Dividend | Press release | Business Wire | — | +0.66% | |
| Form S-8 POS UNITED SECURITY BANCSHAR | SEC filing · Form S-8 | SEC EDGAR | +0.98% | -0.74% | |
| Form S-8 UNITED SECURITY BANCSHAR | SEC filing · Form S-8 | SEC EDGAR | +0.98% | -0.74% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.32% | |
| Form 8-K/A UNITED SECURITY BANCSHAR For: May 21 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.00% | |
| Form 8-K UNITED SECURITY BANCSHAR For: May 30 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | -1.63% | |
| Form 8-K UNITED SECURITY BANCSHAR For: May 21 | SEC filing · Form 8-K | SEC EDGAR | — | +0.46% | |
| Form 8-K UNITED SECURITY BANCSHAR For: May 09 | SEC filing · Form 8-K | SEC EDGAR | +5.56% | +1.00% | |
| Form 10-Q UNITED SECURITY BANCSHAR For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.98% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Apr 28 | SEC filing · Form 8-K | SEC EDGAR | — | +0.56% | |
| United Security Bancshares Appoints Jay Gill as Vice Chairman | Press release | Business Wire | — | +0.56% | |
| Form DEFA14A UNITED SECURITY BANCSHAR | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | +1.14% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Apr 17 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.14% | |
| United Security Bancshares Reports First Quarter 2025 Earnings | Press release | Business Wire | +0.00% | +1.14% | |
| Form DEF 14A UNITED SECURITY BANCSHAR For: Apr 07 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +1.55% | |
| Form PRE 14A UNITED SECURITY BANCSHAR For: May 21 | SEC filing · Form PRE | SEC EDGAR | +1.65% | -1.21% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Mar 25 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +2.01% | |
| United Security Bancshares Declares Quarterly Cash Dividend | Press release | Business Wire | +0.00% | +2.01% | |
| Form 10-K UNITED SECURITY BANCSHAR For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.06% | -0.56% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -3.02% | |
| United Security Bancshares Reports Fourth Quarter 2024 Earnings | Press release | Business Wire | +0.00% | -3.02% | |
| Form 8-K UNITED SECURITY BANCSHAR For: Dec 17 | SEC filing · Form 8-K | SEC EDGAR | +1.19% | -0.80% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the UBFO section they belong to.
Where else UBFO is measured.
UBFO earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Delaware Investments Colorado Municipal Income Fund, Inc (VCF) | 284 | 0.00% | 37% |
| CNB Financial Corporation (CCNE) | 283 | +0.09% | 57% |
| AllianceBernstein Holding L.P. Units (AB) | 282 | +0.20% | 62% |
| Sumitomo Mitsui Financial Group Inc Unsponsored American Depositary Shares (Japan) (SMFG) | 282 | +0.13% | 61% |
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 →
Every ticker we measure the same way24
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Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is United Security Bancshares's median reaction calculated?
Every labeled UBFO 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 283 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. 45% of UBFO'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 UBFO'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.