UNITED SECURITY BANCSHARE/CA (UBFO) Institutional Shareholders
UNITED SECURITY BANCSHARE/CA (UBFO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $56.46M in UBFO holdings during the latest filing period.
Dimensional Fund Advisors Lp is currently the largest disclosed institutional shareholder of UBFO tracked by InsiderSet, reporting ownership valued at approximately $9.74M in its March 31, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 78% of the total disclosed UBFO value among the investors covered in this analysis. Major shareholders include Dimensional Fund Advisors Lp, Fourthstone Llc, Blackrock, Inc., and several other long-term asset managers with concentrated positions in UNITED SECURITY BANCSHARE/CA (UBFO).
This page ranks the largest institutional UBFO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
57
Total Reported Value
$56.46M
Largest Holder
Dimensional Fund Advisors Lp
Largest Position
$9.74M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
82
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Dimensional Fund Advisors Lp | 0.00% | 926,632 | $9,738,485 | — | — | — | |
| Fourthstone Llc | 1.18% | 664,342 | $6,982,234 | — | — | — | |
| Blackrock, Inc. | 0.00% | 649,837 | $6,829,786 | — | — | — | |
| Vanguard Capital Management Llc | 0.00% | 584,697 | $6,145,165 | — | — | — | |
| Banc Funds Co Llc | 1.04% | 532,316 | $5,594,641 | — | — | — | |
| Geode Capital Management, Llc | 0.00% | 302,780 | $3,182,629 | — | — | — | |
| Bridgeway Capital Management, Llc | 0.03% | 159,771 | $1,679,193 | — | — | — | |
| State Street Corp | 0.00% | 143,023 | $1,503,172 | — | — | — | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 113,948 | $1,197,593 | — | — | — |
| Northern Trust Corp | 0.00% | 101,361 | $1,065,304 | — | — | — | |
| Destination Wealth Management | 0.03% | 94,506 | $993,257 | — | — | — | |
| Millennium Management Llc | 0.00% | 94,187 | $989,905 | — | — | — | |
| Alliancebernstein L.P. | 0.00% | 92,478 | $931,253 | — | — | — | |
| Vanguard Fiduciary Trust Co | 0.00% | 87,522 | $919,856 | — | — | — | |
| American Century Companies Inc | 0.00% | 83,365 | $876,166 | — | — | — | |
| Vanguard Portfolio Management Llc | 0.00% | 79,980 | $840,590 | — | — | — | |
| Empowered Funds, Llc | 0.00% | 73,871 | $776,384 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 64,609 | $679,041 | — | — | — | |
| Yakira Capital Management, Inc. | 0.19% | 60,411 | $634,920 | — | — | — | |
| Barclays Plc | 0.00% | 58,822 | $618,219 | — | — | — | |
| Morgan Stanley | 0.00% | 57,146 | $600,614 | — | — | — | |
| Cerity Partners Llc | 0.00% | 52,647 | $553,320 | — | — | — | |
| Charles Schwab Investment Management Inc | 0.00% | 36,885 | $387,661 | — | — | — | |
| Royal Bank Of Canada | 0.00% | 31,851 | $334,000 | — | — | — | |
| Bank Of New York Mellon Corp | 0.00% | 31,021 | $326,032 | — | — | — | |
| Nuveen, Llc | 0.00% | 24,686 | $259,450 | — | — | — | |
| Hsbc Holdings Plc | 0.00% | 24,436 | $255,601 | — | — | — | |
| Oxford Asset Management Llp | 0.10% | 23,131 | $243,107 | — | — | — | |
| Bank Of America Corp | 0.00% | 17,120 | $179,932 | — | — | — | |
| Prelude Capital Management, Llc | 0.01% | 15,541 | $163,336 | — | — | — | |
| Css Llc/Il | 0.01% | 13,675 | $143,724 | — | — | — | |
| O'Shaughnessy Asset Management, Llc | 0.00% | 11,541 | $121,296 | — | — | — | |
| Rhumbline Advisers | 0.00% | 10,285 | $108,091 | — | — | — | |
| Caldwell Sutter Capital, Inc. | 0.04% | 10,065 | $105,783 | — | — | — | |
| Penderfund Capital Management Ltd. | 0.01% | 8,300 | $87,233 | — | — | — | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 6,573 | $69,082 | — | — | — | |
| Deutsche Bank Ag\ | 0.00% | 6,042 | $63,501 | — | — | — | |
| Vanguard Global Advisers, Llc | 0.00% | 5,447 | $57,248 | — | — | — | |
| Wells Fargo & Company/Mn | 0.00% | 5,232 | $54,990 | — | — | — | |
| Ubs Group Ag | 0.00% | 4,966 | $52,193 | — | — | — | |
| Tower Research Capital Llc (Trc) | 0.00% | 2,440 | $25,644 | — | — | — | |
| Bnp Paribas Financial Markets | 0.00% | 2,331 | $24,499 | — | — | — | |
| Ameritas Investment Partners, Inc. | 0.00% | 1,414 | $14,861 | — | — | — | |
| Legal & General Group Plc | 0.00% | 1,247 | $13,106 | — | — | — | |
| California State Teachers Retirement System | 0.00% | 748 | $7,861 | — | — | — | |
| Russell Investments Group, Ltd. | 0.00% | 710 | $7,462 | — | — | — | |
| Citigroup Inc | 0.00% | 643 | $6,758 | — | — | — | |
| Cwm, Llc | 0.00% | 388 | $4,078 | — | — | — | |
| Glazer Capital, Llc | 0.06% | 252,426 | $2,653 | — | — | — | |
| Pnc Financial Services Group, Inc. | 0.00% | 184 | $1,934 | — | — | — |
Frequently asked questions about UBFO
Who owns the most UBFO stock?
The largest holders of UBFO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for UNITED SECURITY BANCSHARE/CA (UBFO).
Is UBFO widely held by superinvestors?
Many widely followed stocks like UBFO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly UBFO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.