There is a long list of 135 institutional holders of OSPN 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 OSPN by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-OSPN table below, the initial column indicates the name of each top institutional holder of OSPN, with a link to that fund's top holdings. The next columns indicate the amount of OSPN stock held by each of the institutional holders of OSPN, followed by the OSPN 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
BlackRock Inc.	3,444,246	$36,922	12/31/2023
OSPN	3,444,246	$36,922	12/31/2023
Legion Partners Asset Management LLC	3,008,030	$32,246	12/31/2023
OSPN	3,008,030	$32,246	12/31/2023
Vanguard Group Inc.	2,574,468	$27,598	12/31/2023
OSPN	2,574,468	$27,598	12/31/2023
First Trust Advisors LP	2,233,975	$23,948	12/31/2023
OSPN	2,233,975	$23,948	12/31/2023
Legal & General Group Plc	2,207,340	$23,663	12/31/2023
OSPN	2,207,340	$23,663	12/31/2023
Anson Funds Management LP	1,697,192	$18,194	12/31/2023
OSPN	1,697,192	$18,194	12/31/2023
Neuberger Berman Group LLC	1,538,625	$16,500	12/31/2023
OSPN	1,538,625	$16,500	12/31/2023
Mirae Asset Global Investments Co. Ltd.	1,479,766	$15,863	12/31/2023
OSPN	1,479,766	$15,863	12/31/2023
Altai Capital Management L.P.	1,072,203	$11,494	12/31/2023
OSPN	1,072,203	$11,494	12/31/2023
Dimensional Fund Advisors LP	868,405	$9,309	12/31/2023
OSPN	868,405	$9,309	12/31/2023
Lynrock Lake LP	866,666	$9,291	12/31/2023
OSPN	866,666	$9,291	12/31/2023
Geode Capital Management LLC	820,153	$8,793	12/31/2023
OSPN	820,153	$8,793	12/31/2023
Segall Bryant & Hamill LLC	773,132	$8,288	12/31/2023
OSPN	773,132	$8,288	12/31/2023
Ameriprise Financial Inc.	761,672	$8,165	12/31/2023
OSPN	761,672	$8,165	12/31/2023
Morgan Stanley	728,768	$7,812	12/31/2023
OSPN	728,768	$7,812	12/31/2023
Arrowstreet Capital Limited Partnership	620,970	$6,657	12/31/2023
OSPN	620,970	$6,657	12/31/2023
Millennium Management LLC	541,806	$5,808	12/31/2023
OSPN	541,806	$5,808	12/31/2023
State Street Corp	475,777	$5,100	12/31/2023
OSPN	475,777	$5,100	12/31/2023
Northern Trust Corp	432,073	$4,632	12/31/2023
OSPN	432,073	$4,632	12/31/2023
Kennedy Capital Management Inc.	376,104	$4,032	12/31/2023
OSPN	376,104	$4,032	12/31/2023
Charles Schwab Investment Management Inc.	280,562	$3,008	12/31/2023
OSPN	280,562	$3,008	12/31/2023
Los Angeles Capital Management & Equity Research Inc.	257,723	$2,997	03/31/2024
OSPN	257,723	$2,997	03/31/2024
Citadel Advisors LLC		$2,463	12/31/2023
OSPN	235,327	$2,523	12/31/2023
Put	7,400	$79	12/31/2023
Call	1,800	$19	12/31/2023
HRT Financial LP	219,063	$2,348	12/31/2023
OSPN	219,063	$2,348	12/31/2023
D. E. Shaw & Co. Inc.	209,422	$2,245	12/31/2023
OSPN	209,422	$2,245	12/31/2023
Russell Investments Group Ltd.	203,131	$2,178	12/31/2023
OSPN	203,131	$2,178	12/31/2023
Herald Investment Management Ltd	200,000	$2,144	12/31/2023
OSPN	200,000	$2,144	12/31/2023
B. Riley Asset Management LLC	178,218	$1,965	12/31/2023
OSPN	178,218	$1,965	12/31/2023
Fuller & Thaler Asset Management Inc.	182,468	$1,956	12/31/2023
OSPN	182,468	$1,956	12/31/2023
Kovack Advisors Inc.	167,400	$1,947	03/31/2024
OSPN	167,400	$1,947	03/31/2024
Renaissance Technologies LLC	172,282	$1,847	12/31/2023
OSPN	172,282	$1,847	12/31/2023
JPMorgan Chase & Co.	171,252	$1,836	12/31/2023
OSPN	171,252	$1,836	12/31/2023
Goldman Sachs Group Inc.	140,513	$1,506	12/31/2023
OSPN	140,513	$1,506	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	137,917	$1,478	12/31/2023
OSPN	137,917	$1,478	12/31/2023
Arthur M. Cohen & Associates LLC	134,474	$1,442	12/31/2023
OSPN	134,474	$1,442	12/31/2023
GSA Capital Partners LLP	131,730	$1,412	12/31/2023
OSPN	131,730	$1,412	12/31/2023
Bank of New York Mellon Corp	125,344	$1,344	12/31/2023
OSPN	125,344	$1,344	12/31/2023
Nuveen Asset Management LLC	114,180	$1,224	12/31/2023
OSPN	114,180	$1,224	12/31/2023
Davy Global Fund Management Ltd	113,535	$1,217	12/31/2023
OSPN	113,535	$1,217	12/31/2023
EJF Capital LLC	110,000	$1,179	12/31/2023
OSPN	110,000	$1,179	12/31/2023
Bank of America Corp DE	100,246	$1,075	12/31/2023
OSPN	100,246	$1,075	12/31/2023
Citigroup Inc.	97,061	$1,040	12/31/2023
OSPN	97,061	$1,040	12/31/2023
Barclays PLC	94,684	$1,014	12/31/2023
OSPN	94,684	$1,014	12/31/2023
Legato Capital Management LLC	86,931	$1,011	03/31/2024
OSPN	86,931	$1,011	03/31/2024
Marshall Wace LLP	91,213	$978	12/31/2023
OSPN	91,213	$978	12/31/2023
Susquehanna International Group LLP		$941	12/31/2023
OSPN	146,471	$1,570	12/31/2023
Put	58,700	$629	12/31/2023
Boothbay Fund Management LLC	77,691	$833	12/31/2023
OSPN	77,691	$833	12/31/2023
UBS Group AG	64,399	$690	12/31/2023
OSPN	64,399	$690	12/31/2023
Credit Suisse AG	63,150	$677	12/31/2023
OSPN	63,150	$677	12/31/2023
Swiss National Bank	63,100	$676	12/31/2023
OSPN	63,100	$676	12/31/2023