There is a long list of 76 institutional holders of ORN 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 ORN by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-ORN table below, the initial column indicates the name of each top institutional holder of ORN, with a link to that fund's top holdings. The next columns indicate the amount of ORN stock held by each of the institutional holders of ORN, followed by the ORN 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
Brandes Investment Partners LP	3,335,361	$16,477	12/31/2023
ORN	3,335,361	$16,477	12/31/2023
Grace & White Inc. NY	1,153,467	$9,458	03/31/2024
ORN	1,153,467	$9,458	03/31/2024
AMH Equity Ltd	1,855,000	$9,164	12/31/2023
ORN	1,855,000	$9,164	12/31/2023
Dimensional Fund Advisors LP	1,852,316	$9,150	12/31/2023
ORN	1,852,316	$9,150	12/31/2023
Royce & Associates LP	1,825,535	$9,018	12/31/2023
ORN	1,825,535	$9,018	12/31/2023
Vanguard Group Inc.	1,472,526	$7,274	12/31/2023
ORN	1,472,526	$7,274	12/31/2023
RBF Capital LLC	889,856	$4,396	12/31/2023
ORN	889,856	$4,396	12/31/2023
Acadian Asset Management LLC	761,146	$3,758	12/31/2023
ORN	761,146	$3,758	12/31/2023
Invesco Ltd.	685,800	$3,388	12/31/2023
ORN	685,800	$3,388	12/31/2023
Gendell Jeffrey L	654,811	$3,235	12/31/2023
ORN	654,811	$3,235	12/31/2023
Acuitas Investments LLC	645,248	$3,188	12/31/2023
ORN	645,248	$3,188	12/31/2023
Russell Investments Group Ltd.	630,485	$3,115	12/31/2023
ORN	630,485	$3,115	12/31/2023
BlackRock Inc.	597,536	$2,952	12/31/2023
ORN	597,536	$2,952	12/31/2023
G2 Investment Partners Management LLC	481,974	$2,381	12/31/2023
ORN	481,974	$2,381	12/31/2023
First Eagle Investment Management LLC	448,131	$2,214	12/31/2023
ORN	448,131	$2,214	12/31/2023
Assenagon Asset Management S.A.	256,865	$2,106	03/31/2024
ORN	256,865	$2,106	03/31/2024
Bridgeway Capital Management Inc.	386,888	$1,911	12/31/2023
ORN	386,888	$1,911	12/31/2023
Essex Investment Management Co. LLC	368,981	$1,823	12/31/2023
ORN	368,981	$1,823	12/31/2023
Ancora Advisors LLC	344,787	$1,703	12/31/2023
ORN	344,787	$1,703	12/31/2023
Geode Capital Management LLC	290,412	$1,435	12/31/2023
ORN	290,412	$1,435	12/31/2023
Boston Partners	283,655	$1,401	12/31/2023
ORN	283,655	$1,401	12/31/2023
Renaissance Technologies LLC	265,797	$1,313	12/31/2023
ORN	265,797	$1,313	12/31/2023
Kennedy Capital Management Inc.	254,254	$1,256	12/31/2023
ORN	254,254	$1,256	12/31/2023
Susquehanna International Group LLP		$1,146	12/31/2023
ORN	168,270	$831	12/31/2023
Call	63,700	$315	12/31/2023
Empowered Funds LLC	203,566	$1,006	12/31/2023
ORN	203,566	$1,006	12/31/2023
US Bancorp DE	166,645	$823	12/31/2023
ORN	166,645	$823	12/31/2023
Legato Capital Management LLC	87,511	$718	03/31/2024
ORN	87,511	$718	03/31/2024
Millennium Management LLC	139,694	$690	12/31/2023
ORN	139,694	$690	12/31/2023
Boothbay Fund Management LLC	135,324	$669	12/31/2023
ORN	135,324	$669	12/31/2023
Northeast Financial Consultants Inc	135,365	$669	12/31/2023
ORN	135,365	$669	12/31/2023
JB Capital Partners LP	130,000	$642	12/31/2023
ORN	130,000	$642	12/31/2023
State Street Corp	126,825	$627	12/31/2023
ORN	126,825	$627	12/31/2023
ClariVest Asset Management LLC	122,293	$604	12/31/2023
ORN	122,293	$604	12/31/2023
Bank of America Corp DE	92,660	$458	12/31/2023
ORN	92,660	$458	12/31/2023
Qube Research & Technologies Ltd	78,752	$389	12/31/2023
ORN	78,752	$389	12/31/2023
GDS Wealth Management	47,338	$388	03/31/2024
ORN	47,338	$388	03/31/2024
Jane Street Group LLC	77,858	$385	12/31/2023
ORN	77,858	$385	12/31/2023
Northern Trust Corp	64,454	$318	12/31/2023
ORN	64,454	$318	12/31/2023
Barclays PLC	60,855	$300	12/31/2023
ORN	60,855	$300	12/31/2023
Citadel Advisors LLC		$300	12/31/2023
ORN	43,750	$216	12/31/2023
Call	18,900	$93	12/31/2023
Put	1,800	$9	12/31/2023
683 Capital Management LLC	47,694	$236	12/31/2023
ORN	47,694	$236	12/31/2023
Goldman Sachs Group Inc.	42,588	$210	12/31/2023
ORN	42,588	$210	12/31/2023
Two Sigma Advisers LP	39,100	$193	12/31/2023
ORN	39,100	$193	12/31/2023
Citigroup Inc.	37,671	$186	12/31/2023
ORN	37,671	$186	12/31/2023
ExodusPoint Capital Management LP	36,639	$181	12/31/2023
ORN	36,639	$181	12/31/2023
Morgan Stanley	34,341	$170	12/31/2023
ORN	34,341	$170	12/31/2023
JPMorgan Chase & Co.	32,474	$160	12/31/2023
ORN	32,474	$160	12/31/2023
PDT Partners LLC	31,040	$153	12/31/2023
ORN	31,040	$153	12/31/2023
Balyasny Asset Management LLC	29,618	$146	12/31/2023
ORN	29,618	$146	12/31/2023
Nierenberg Investment Management Company Inc.	22,555	$111	12/31/2023
ORN	22,555	$111	12/31/2023