RBB Institutional Ownership & Shareholders
RBB BANCORP (RBB) is currently held by 142 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $268.17M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of RBB tracked by InsiderSet, reporting ownership valued at approximately $35.42M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $32.85M, representing an estimated loss of -7.28% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed RBB value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in RBB BANCORP (RBB).
This page ranks the largest institutional RBB 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
142
Total Reported Value
$268.17M
Largest Holder
Blackrock, Inc.
Largest Position
$35.42M
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
130
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 1,292,135 | $35,423,881 | $32,846,072 | -$2,577,809 | -7.28% | |
| Dimensional Fund Advisors Lp | 0.00% | 902,290 | $24,736,307 | $22,936,212 | -$1,800,095 | -7.28% | |
| Vanguard Capital Management Llc | 0.00% | 641,304 | $17,581,349 | $16,301,948 | -$1,279,401 | -7.28% | |
| American Century Companies Inc | 0.01% | 536,436 | $14,706,404 | $13,636,203 | -$1,070,201 | -7.28% | |
| Acadian Asset Management Llc | 0.01% | 400,451 | $10,966,000 | $10,179,464 | -$786,536 | -7.17% | |
| Geode Capital Management, Llc | 0.00% | 370,553 | $10,160,785 | $9,419,457 | -$741,328 | -7.30% | |
| State Street Corp | 0.00% | 337,621 | $9,255,880 | $8,582,326 | -$673,554 | -7.28% | |
| Hillsdale Investment Management Inc. | 0.20% | 327,169 | $8,969,340 | $8,316,636 | -$652,704 | -7.28% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 223,877 | $6,137,588 | $5,690,953 | -$446,635 | -7.28% | |
| Morgan Stanley | 0.00% | 206,553 | $5,662,675 | $5,250,577 | -$412,098 | -7.28% | |
| Qube Research & Technologies Ltd | 0.01% | 195,579 | $5,361,798 | $4,971,618 | -$390,180 | -7.28% | |
| Lsv Asset Management | 0.01% | 190,600 | $5,225,000 | $4,845,052 | -$379,948 | -7.27% | |
| Hotchkis & Wiley Capital Management Llc | 0.01% | 185,168 | $5,076,381 | $4,706,971 | -$369,410 | -7.28% | |
| Rhino Investment Partners, Inc | 1.48% | 178,388 | $4,890,507 | $4,534,623 | -$355,884 | -7.28% | |
| Bridgeway Capital Management, Llc | 0.08% | 172,655 | $4,733,337 | $4,388,890 | -$344,447 | -7.28% | |
| Algert Global Llc | 0.05% | 156,224 | $4,282,881 | $3,971,214 | -$311,667 | -7.28% | |
| Raymond James Financial Inc | 0.00% | 150,380 | $4,122,668 | $3,822,660 | -$300,008 | -7.28% | |
| Vanguard Portfolio Management Llc | 0.00% | 136,257 | $3,735,486 | $3,463,653 | -$271,833 | -7.28% | |
| Northern Trust Corp | 0.00% | 125,575 | $3,442,639 | $3,192,117 | -$250,523 | -7.28% | |
| Two Sigma Investments, Lp | 0.00% | 117,871 | $3,231,433 | $2,996,281 | -$235,152 | -7.28% | |
| Alliancebernstein L.P. | 0.00% | 142,884 | $3,053,431 | $3,632,111 | +$578,680 | +18.95% | |
| Ejf Capital Lp | 2.00% | 109,258 | $2,995,308 | $2,777,338 | -$217,970 | -7.28% | |
| Los Angeles Capital Management Llc | 0.01% | 108,171 | $2,965,507 | $2,749,707 | -$215,800 | -7.28% | |
| Aqr Capital Management Llc | 0.00% | 106,302 | $2,914,264 | $2,702,197 | -$212,067 | -7.28% | |
| Empowered Funds, Llc | 0.02% | 104,534 | $2,865,799 | $2,657,254 | -$208,545 | -7.28% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 103,297 | $2,831,887 | $2,625,810 | -$206,077 | -7.28% | |
| Bank Of New York Mellon Corp | 0.00% | 97,894 | $2,683,764 | $2,488,465 | -$195,299 | -7.28% | |
| Marshall Wace, Llp | 0.00% | 97,845 | $2,681,932 | $2,487,220 | -$194,712 | -7.26% | |
| O'Shaughnessy Asset Management, Llc | 0.01% | 96,968 | $2,658,378 | $2,464,927 | -$193,451 | -7.28% | |
| Trexquant Investment Lp | 0.01% | 87,095 | $2,387,709 | $2,213,955 | -$173,754 | -7.28% | |
| Vanguard Fiduciary Trust Co | 0.00% | 86,406 | $2,368,820 | $2,196,441 | -$172,379 | -7.28% | |
| Goldman Sachs Group Inc | 0.00% | 80,060 | $2,194,845 | $2,035,125 | -$159,720 | -7.28% | |
| Quantinno Capital Management Lp | 0.00% | 75,397 | $2,067,011 | $1,916,592 | -$150,419 | -7.28% | |
| Squarepoint Ops Llc | 0.00% | 68,007 | $1,864,412 | $1,728,738 | -$135,674 | -7.28% | |
| Citadel Advisors Llc | 0.00% | 66,633 | $1,826,743 | $1,693,811 | -$132,932 | -7.28% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 61,514 | $1,686,406 | $1,563,686 | -$122,720 | -7.28% | |
| Ubs Group Ag | 0.00% | 56,794 | $1,557,007 | $1,443,703 | -$113,304 | -7.28% | |
| Kennedy Capital Management Llc | 0.03% | 54,299 | $1,488,607 | $1,380,281 | -$108,326 | -7.28% | |
| Bank Of America Corp | 0.00% | 52,415 | $1,436,958 | $1,332,389 | -$104,569 | -7.28% | |
| Nuveen, Llc | 0.00% | 50,795 | $1,392,545 | $1,291,209 | -$101,336 | -7.28% | |
| Prudential Financial Inc | 0.00% | 50,385 | $1,381,305 | $1,280,787 | -$100,518 | -7.28% | |
| Russell Investments Group, Ltd. | 0.00% | 49,847 | $1,365,252 | $1,267,111 | -$98,141 | -7.19% | |
| Integrated Quantitative Investments Llc | 0.22% | 48,961 | $1,342,266 | $1,244,589 | -$97,677 | -7.28% | |
| First Trust Advisors Lp | 0.00% | 47,471 | $1,301,417 | $1,206,713 | -$94,704 | -7.28% | |
| Ameriprise Financial Inc | 0.00% | 46,683 | $1,279,814 | $1,186,682 | -$93,132 | -7.28% | |
| Charles Schwab Investment Management Inc | 0.00% | 46,609 | $1,277,786 | $1,184,801 | -$92,985 | -7.28% | |
| Walleye Capital Llc | 0.01% | 45,829 | $1,256,402 | $1,164,973 | -$91,429 | -7.28% | |
| Point72 Asset Management, L.P. | 0.00% | 43,477 | $1,191,922 | $1,105,185 | -$86,737 | -7.28% | |
| John G Ullman & Associates Inc | 0.13% | 40,550 | $1,111,678 | $1,030,781 | -$80,897 | -7.28% | |
| Martingale Asset Management L P | 0.03% | 38,900 | $1,066,444 | $988,838 | -$77,606 | -7.28% |
Frequently asked questions about RBB
Who are the largest institutional holders of RBB?
The largest institutional holders of RBB reported in the latest SEC Form 13F filings include Blackrock, Inc., Dimensional Fund Advisors Lp, Vanguard Capital Management Llc, American Century Companies Inc, and Acadian Asset Management Llc. InsiderSet ranks institutional holders by their latest reported RBB position.
What is RBB institutional ownership?
This page tracks RBB positions reported by institutional investment managers through SEC Form 13F. RBB BANCORP (RBB) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own RBB?
InsiderSet currently tracks 142 institutional managers reporting RBB holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of RBB shareholders.
How much RBB stock do institutions own?
Institutional investment managers disclosed approximately $268.17M in RBB holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was RBB institutional ownership last updated?
The latest RBB institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional RBB holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its RBB position after the reporting date.
Are institutions buying or selling RBB?
Institutional buying and selling can be analyzed by comparing RBB positions across consecutive 13F reporting periods. InsiderSet's RBB Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View RBB ownership changes.
How has RBB institutional ownership changed over time?
InsiderSet tracks RBB institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.