RBB Bancorp
US ˙ NasdaqGS ˙ US74930B1052

SecurityRBB / RBB Bancorp
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership58,968 shares
Latest Disclosed Value $ 1,260,146
Qube Research & Technologies Ltd reports 39.65% increase in ownership of RBB / RBB Bancorp

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 58,968 shares of RBB Bancorp (US:RBB) valued at $1,260,146 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 42,227 shares of RBB Bancorp. This represents a change in shares of 39.65% during the quarter. The current value of the position is $1,386,927 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F RBB BANCORP COM 74930B105 58,968 16,741 39.65 1,260 44.66 0.0014
2026-02-17 2025-12-31 13F RBB BANCORP COM 74930B105 42,227 10,814 34.43 872 47.88 0.0009
2025-11-14 2025-09-30 13F RBB BANCORP COM 74930B105 31,413 -8,506 -21.31 589 -14.26 0.0006
2025-08-14 2025-06-30 13F RBB BANCORP COM 74930B105 39,919 -10,883 -21.42 687 -18.02 0.0007
2025-05-15 2025-03-31 13F RBB BANCORP COM 74930B105 50,802 29,208 135.26 838 89.59 0.0010
2025-02-14 2024-12-31 13F RBB BANCORP COM 74930B105 21,594 21,594 442 0.0006
2024-11-14 2024-09-30 13F RBB BANCORP COM 74930B105 0 -924 -100.00 0 -100.00
2024-08-14 2024-06-30 13F RBB BANCORP COM 74930B105 924 -5,043 -84.51 17 -84.11 0.0000
2024-05-14 2024-03-31 13F RBB BANCORP COM 74930B105 5,967 5,967 107 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.