There is a long list of 64 institutional holders of OPBK within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of OPBK by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-OPBK table below, the initial column indicates the name of each top institutional holder of OPBK, with a link to that fund's top holdings. The next columns indicate the amount of OPBK stock held by each of the institutional holders of OPBK, followed by the OPBK position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Alliancebernstein L.P.	807,646	$8,844	12/31/2023
OPBK	807,646	$8,844	12/31/2023
Dfpg Investments LLC	707,500	$7,648	12/31/2023
OPBK	707,500	$7,648	12/31/2023
The Manufacturers Life Insurance Company	634,012	$6,942	12/31/2023
OPBK	634,012	$6,942	12/31/2023
Vanguard Group Inc.	632,533	$6,926	12/31/2023
OPBK	632,533	$6,926	12/31/2023
Dimensional Fund Advisors LP	410,140	$4,491	12/31/2023
OPBK	410,140	$4,491	12/31/2023
Stieven Capital Advisors L.P.	395,716	$4,333	12/31/2023
OPBK	395,716	$4,333	12/31/2023
Acadian Asset Management LLC	346,282	$3,790	12/31/2023
OPBK	346,282	$3,790	12/31/2023
Gator Capital Management LLC	252,071	$2,760	12/31/2023
OPBK	252,071	$2,760	12/31/2023
BHZ Capital Management LP	250,317	$2,741	12/31/2023
OPBK	250,317	$2,741	12/31/2023
Bridgeway Capital Management Inc.	204,577	$2,240	12/31/2023
OPBK	204,577	$2,240	12/31/2023
BlackRock Inc.	185,084	$2,027	12/31/2023
OPBK	185,084	$2,027	12/31/2023
Fourthstone LLC	131,998	$1,445	12/31/2023
OPBK	131,998	$1,445	12/31/2023
Maltese Capital Management LLC	117,477	$1,286	12/31/2023
OPBK	117,477	$1,286	12/31/2023
Ancora Advisors LLC	112,460	$1,231	12/31/2023
OPBK	112,460	$1,231	12/31/2023
Geode Capital Management LLC	112,096	$1,228	12/31/2023
OPBK	112,096	$1,228	12/31/2023
Stifel Financial Corp	100,000	$1,095	12/31/2023
OPBK	100,000	$1,095	12/31/2023
LSV Asset Management	96,500	$1,057	12/31/2023
OPBK	96,500	$1,057	12/31/2023
Renaissance Technologies LLC	93,900	$1,028	12/31/2023
OPBK	93,900	$1,028	12/31/2023
ClariVest Asset Management LLC	87,816	$962	12/31/2023
OPBK	87,816	$962	12/31/2023
Arrowstreet Capital Limited Partnership	75,419	$826	12/31/2023
OPBK	75,419	$826	12/31/2023
American Century Companies Inc.	72,408	$793	12/31/2023
OPBK	72,408	$793	12/31/2023
Wellington Management Group LLP	72,172	$790	12/31/2023
OPBK	72,172	$790	12/31/2023
Bank of America Corp DE	48,421	$530	12/31/2023
OPBK	48,421	$530	12/31/2023
Morgan Stanley	44,682	$489	12/31/2023
OPBK	44,682	$489	12/31/2023
Russell Investments Group Ltd.	43,028	$471	12/31/2023
OPBK	43,028	$471	12/31/2023
Susquehanna International Group LLP	41,480	$454	12/31/2023
OPBK	41,480	$454	12/31/2023
Empowered Funds LLC	41,023	$449	12/31/2023
OPBK	41,023	$449	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	40,458	$443	12/31/2023
OPBK	40,458	$443	12/31/2023
State Street Corp	38,152	$418	12/31/2023
OPBK	38,152	$418	12/31/2023
Qube Research & Technologies Ltd	32,281	$353	12/31/2023
OPBK	32,281	$353	12/31/2023
Boston Partners	29,921	$328	12/31/2023
OPBK	29,921	$328	12/31/2023
O Shaughnessy Asset Management LLC	29,632	$324	12/31/2023
OPBK	29,632	$324	12/31/2023
Jane Street Group LLC	28,746	$315	12/31/2023
OPBK	28,746	$315	12/31/2023
Millennium Management LLC	27,834	$305	12/31/2023
OPBK	27,834	$305	12/31/2023
First Manhattan Co.	27,500	$301	12/31/2023
OPBK	27,500	$301	12/31/2023
Goldman Sachs Group Inc.	25,447	$279	12/31/2023
OPBK	25,447	$279	12/31/2023
Hilltop Holdings Inc.	25,000	$274	12/31/2023
OPBK	25,000	$274	12/31/2023
683 Capital Management LLC	24,905	$273	12/31/2023
OPBK	24,905	$273	12/31/2023
Balyasny Asset Management LLC	24,773	$271	12/31/2023
OPBK	24,773	$271	12/31/2023
Man Group plc	23,858	$261	12/31/2023
OPBK	23,858	$261	12/31/2023
Northern Trust Corp	23,398	$256	12/31/2023
OPBK	23,398	$256	12/31/2023
Citigroup Inc.	21,280	$233	12/31/2023
OPBK	21,280	$233	12/31/2023
ExodusPoint Capital Management LP	20,932	$229	12/31/2023
OPBK	20,932	$229	12/31/2023
Sei Investments Co.	20,369	$223	12/31/2023
OPBK	20,369	$223	12/31/2023
Two Sigma Advisers LP	18,400	$201	12/31/2023
OPBK	18,400	$201	12/31/2023
Salzhauer Michael	18,210	$199	12/31/2023
OPBK	18,210	$199	12/31/2023
Bank of New York Mellon Corp	17,913	$196	12/31/2023
OPBK	17,913	$196	12/31/2023
Two Sigma Investments LP	16,005	$175	12/31/2023
OPBK	16,005	$175	12/31/2023
Ritholtz Wealth Management	16,574	$165	03/31/2024
OPBK	16,574	$165	03/31/2024
Royce & Associates LP	14,500	$159	12/31/2023
OPBK	14,500	$159	12/31/2023