There is a long list of 191 institutional holders of OSTK 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 OSTK by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-OSTK table below, the initial column indicates the name of each top institutional holder of OSTK, with a link to that fund's top holdings. The next columns indicate the amount of OSTK stock held by each of the institutional holders of OSTK, followed by the OSTK 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
Vanguard Group Inc.	4,336,179	$72,761	12/31/2023
OSTK	4,336,179	$72,761	12/31/2023
Hampton Road Capital Management LP	4,172,909	$70,021	12/31/2023
OSTK	4,172,909	$70,021	12/31/2023
BlackRock Inc.	3,629,610	$60,905	12/31/2023
OSTK	3,629,610	$60,905	12/31/2023
Dimensional Fund Advisors LP	1,672,304	$28,061	12/31/2023
OSTK	1,672,304	$28,061	12/31/2023
Toroso Investments LLC	1,646,994	$27,637	12/31/2023
OSTK	1,646,994	$27,637	12/31/2023
Contrarius Investment Management Ltd	1,645,165	$27,606	12/31/2023
OSTK	1,645,165	$27,606	12/31/2023
Morgan Stanley	1,365,041	$22,905	12/31/2023
OSTK	1,365,041	$22,905	12/31/2023
Susquehanna International Group LLP		$17,910	12/31/2023
Call	888,700	$24,608	12/31/2023
Put	472,800	$13,092	12/31/2023
OSTK	381,060	$6,394	12/31/2023
State Street Corp	1,001,360	$16,803	12/31/2023
OSTK	1,001,360	$16,803	12/31/2023
Geode Capital Management LLC	965,112	$16,195	12/31/2023
OSTK	965,112	$16,195	12/31/2023
Hidden Lake Asset Management LP		$15,252	12/31/2023
Call	400,000	$11,076	12/31/2023
OSTK	248,840	$4,176	12/31/2023
Charles Schwab Investment Management Inc.	815,906	$13,691	12/31/2023
OSTK	815,906	$13,691	12/31/2023
Jane Street Group LLC		$12,664	12/31/2023
Call	741,900	$20,543	12/31/2023
Put	631,200	$17,478	12/31/2023
OSTK	572,057	$9,599	12/31/2023
Calixto Global Investors LP	703,245	$11,800	12/31/2023
OSTK	703,245	$11,800	12/31/2023
Invesco Ltd.	454,059	$7,619	12/31/2023
OSTK	454,059	$7,619	12/31/2023
UBS Group AG		$7,401	12/31/2023
Call	313,700	$8,686	12/31/2023
Put	125,000	$3,461	12/31/2023
OSTK	129,652	$2,176	12/31/2023
Wolverine Trading LLC		$7,249	12/31/2023
Call	407,100	$11,273	12/31/2023
Put	151,600	$4,198	12/31/2023
OSTK	10,344	$174	12/31/2023
Northern Trust Corp	429,810	$7,212	12/31/2023
OSTK	429,810	$7,212	12/31/2023
Caption Management LLC		$7,175	12/31/2023
Call	227,600	$6,302	12/31/2023
OSTK	52,000	$873	12/31/2023
Balyasny Asset Management LLC	401,669	$6,740	12/31/2023
OSTK	401,669	$6,740	12/31/2023
Marshall Wace LLP	400,133	$6,714	12/31/2023
OSTK	400,133	$6,714	12/31/2023
Millennium Management LLC	391,779	$6,574	12/31/2023
OSTK	391,779	$6,574	12/31/2023
JPMorgan Chase & Co.	375,453	$6,300	12/31/2023
OSTK	375,453	$6,300	12/31/2023
Royce & Associates LP	351,678	$5,901	12/31/2023
OSTK	351,678	$5,901	12/31/2023
Qube Research & Technologies Ltd	344,992	$5,789	12/31/2023
OSTK	344,992	$5,789	12/31/2023
Walleye Capital LLC		$5,664	12/31/2023
OSTK	287,239	$4,820	12/31/2023
Call	50,500	$1,398	12/31/2023
Put	20,000	$554	12/31/2023
Group One Trading L.P.		$5,607	12/31/2023
Put	888,400	$24,600	12/31/2023
Call	879,300	$24,348	12/31/2023
OSTK	349,177	$5,859	12/31/2023
Discovery Capital Management LLC CT	323,844	$5,434	12/31/2023
OSTK	323,844	$5,434	12/31/2023
Refined Wealth Management	300,522	$5,043	03/31/2024
OSTK	300,522	$5,043	03/31/2024
Hodges Capital Management Inc.	290,950	$4,882	03/31/2024
OSTK	290,950	$4,882	03/31/2024
Soviero Asset Management LP	278,000	$4,665	12/31/2023
OSTK	278,000	$4,665	12/31/2023
ProShare Advisors LLC	265,104	$4,448	12/31/2023
OSTK	265,104	$4,448	12/31/2023
Verition Fund Management LLC	261,830	$4,394	12/31/2023
OSTK	261,830	$4,394	12/31/2023
Prelude Capital Management LLC	254,757	$4,275	12/31/2023
OSTK	254,757	$4,275	12/31/2023
Ameriprise Financial Inc.	254,594	$4,272	12/31/2023
OSTK	254,594	$4,272	12/31/2023
Bank of America Corp DE	245,760	$4,124	12/31/2023
OSTK	245,760	$4,124	12/31/2023
Norges Bank	245,571	$4,121	12/31/2023
OSTK	245,571	$4,121	12/31/2023
GTS Securities LLC		$4,106	12/31/2023
Put	264,200	$7,316	12/31/2023
Call	243,000	$6,729	12/31/2023
OSTK	279,682	$4,693	12/31/2023
Eagle Asset Management Inc.	237,169	$3,980	12/31/2023
OSTK	237,169	$3,980	12/31/2023
swisspartners Advisors Ltd	215,565	$3,617	12/31/2023
OSTK	215,565	$3,617	12/31/2023
Penserra Capital Management LLC	214,494	$3,599	12/31/2023
OSTK	214,494	$3,599	12/31/2023
Walleye Trading LLC		$3,319	12/31/2023
OSTK	255,532	$4,288	12/31/2023
Put	122,100	$3,381	12/31/2023
Call	87,100	$2,412	12/31/2023
Parallax Volatility Advisers L.P.		$3,182	12/31/2023
Call	116,100	$3,215	12/31/2023
Put	1,200	$33	12/31/2023
Nuveen Asset Management LLC	154,570	$2,594	12/31/2023
OSTK	154,570	$2,594	12/31/2023
Bank of New York Mellon Corp	150,816	$2,531	03/31/2024
OSTK	150,816	$2,531	03/31/2024
Lee Danner & Bass Inc.	145,265	$2,438	12/31/2023
OSTK	145,265	$2,438	12/31/2023
Goldman Sachs Group Inc.	136,964	$2,298	12/31/2023
OSTK	136,964	$2,298	12/31/2023
Stifel Financial Corp	135,266	$2,270	12/31/2023
OSTK	135,266	$2,270	12/31/2023
Royal Bank of Canada	127,237	$2,135	12/31/2023
OSTK	127,237	$2,135	12/31/2023
Fuller & Thaler Asset Management Inc.	108,596	$1,822	12/31/2023
OSTK	108,596	$1,822	12/31/2023