RBB Bancorp
RBB
107 hedge funds and large institutions have $161M invested in RBB Bancorp in 2025 Q3 according to their latest regulatory filings, with 16 funds opening new positions, 50 increasing their positions, 26 reducing their positions, and 4 closing their positions.
300% more first-time investments, than exits
New positions opened: 16 | Existing positions closed: 4
92% more repeat investments, than reductions
Existing positions increased: 50 | Existing positions reduced: 26
13% more funds holding
Funds holding: 95 → 107 (+12)
8% more capital invested
Capital invested by funds: $149M → $161M (+$12.5M)
1.09% more ownership
Funds ownership: 48.7% → 49.79% (+1.1%)
100% less call options, than puts
Call options by funds: $0 | Put options by funds: $4K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$1.7M |
| 2 |
TI
Trexquant Investment
Stamford,
Connecticut
|
+$905K |
| 3 |
Millennium Management
New York
|
+$834K |
| 4 |
AQR Capital Management
Greenwich,
Connecticut
|
+$792K |
| 5 |
American Century Companies
Kansas City,
Missouri
|
+$730K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FCM
FJ Capital Management
Mclean,
Virginia
|
-$4.87M |
| 2 |
FL
Fourthstone LLC
St Louis,
Missouri
|
-$2.19M |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$1.23M |
| 4 |
GC
Globeflex Capital
San Diego,
California
|
-$867K |
| 5 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$792K |
RBB Hedge Fund Activity: Q3 2025 in Review
107 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in RBB Bancorp (RBB) for Q3 2025, worth a combined $161M — up 8.4% from $149M a quarter earlier.
Buyers outnumbered sellers: 16 funds opened new RBB positions and 4 closed out — a net gain of 12 holders — while 50 added to existing stakes and 26 trimmed.
The largest buyer was Arrowstreet Capital, adding an estimated $1.7M. The largest seller was FJ Capital Management, cutting an estimated $4.87M.
- 107 institutional investors held RBB Bancorp (RBB) as of Q3 2025, up from 95 in Q2 2025.
- Funds reported $161M of RBB Bancorp stock for Q3 2025, up 8.4% quarter-over-quarter.
- 16 funds opened new RBB Bancorp positions in Q3 2025 and 4 closed out, a net change of +12 holders.
- The largest RBB Bancorp buyer in Q3 2025 was Arrowstreet Capital, an estimated $1.7M added.
- The largest RBB Bancorp seller in Q3 2025 was FJ Capital Management, an estimated $4.87M sold.
Based on aggregated 13F filings for Q3 2025.