RBB Bancorp
RBB
112 hedge funds and large institutions have $184M invested in RBB Bancorp in 2025 Q4 according to their latest regulatory filings, with 18 funds opening new positions, 33 increasing their positions, 43 reducing their positions, and 11 closing their positions.
64% more first-time investments, than exits
New positions opened: 18 | Existing positions closed: 11
14% more capital invested
Capital invested by funds: $161M → $184M (+$22.7M)
5% more funds holding
Funds holding: 107 → 112 (+5)
2.45% more ownership
Funds ownership: 49.79% → 52.24% (+2.4%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
23% less repeat investments, than reductions
Existing positions increased: 33 | Existing positions reduced: 43
100% less call options, than puts
Call options by funds: $0 | Put options by funds: $4K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HIM
Hillsdale Investment Management
Toronto,
Ontario, Canada
|
+$2.94M |
| 2 |
RIP
Rhino Investment Partners
West Conshohocken,
Pennsylvania
|
+$1.11M |
| 3 |
Acadian Asset Management
Boston,
Massachusetts
|
+$922K |
| 4 |
KCM
Kennedy Capital Management
St Louis,
Missouri
|
+$816K |
| 5 |
MAM
Martingale Asset Management
Boston,
Massachusetts
|
+$736K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FL
Fourthstone LLC
St Louis,
Missouri
|
-$938K |
| 2 |
BlackRock
New York
|
-$756K |
| 3 |
RS
R Squared
Central,
Hong Kong
|
-$385K |
| 4 |
Squarepoint
New York
|
-$358K |
| 5 |
UBS Group
Zurich,
Switzerland
|
-$320K |
RBB Hedge Fund Activity: Q4 2025 in Review
112 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in RBB Bancorp (RBB) for Q4 2025, worth a combined $184M — up 14% from $161M a quarter earlier.
Buyers outnumbered sellers: 18 funds opened new RBB positions and 11 closed out — a net gain of 7 holders — while 33 added to existing stakes and 43 trimmed.
The largest buyer was Hillsdale Investment Management, opening a new position worth an estimated $2.94M. The largest seller was Fourthstone LLC, exiting entirely with an estimated $938K sold.
- 112 institutional investors held RBB Bancorp (RBB) as of Q4 2025, up from 107 in Q3 2025.
- Funds reported $184M of RBB Bancorp stock for Q4 2025, up 14% quarter-over-quarter.
- 18 funds opened new RBB Bancorp positions in Q4 2025 and 11 closed out, a net change of +7 holders.
- The largest RBB Bancorp buyer in Q4 2025 was Hillsdale Investment Management, an estimated $2.94M added.
- The largest RBB Bancorp seller in Q4 2025 was Fourthstone LLC, an estimated $938K sold.
Based on aggregated 13F filings for Q4 2025.