There is a long list of 83 institutional holders of OLK 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 OLK by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-OLK table below, the initial column indicates the name of each top institutional holder of OLK, with a link to that fund's top holdings. The next columns indicate the amount of OLK stock held by each of the institutional holders of OLK, followed by the OLK 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
FIL Ltd	8,127,000	$204,394	12/31/2023
OLK	8,127,000	$204,394	12/31/2023
Pentwater Capital Management LP	2,617,769	$65,837	12/31/2023
OLK	2,617,769	$65,837	12/31/2023
Woodline Partners LP	2,135,895	$53,718	12/31/2023
OLK	2,135,895	$53,718	12/31/2023
Magnetar Financial LLC	2,049,051	$51,534	12/31/2023
OLK	2,049,051	$51,534	12/31/2023
Westchester Capital Management LLC	2,022,542	$50,867	12/31/2023
OLK	2,022,542	$50,867	12/31/2023
Capital International Investors	2,019,560	$50,792	12/31/2023
OLK	2,019,560	$50,792	12/31/2023
Alpine Associates Management Inc.	1,880,800	$47,302	12/31/2023
OLK	1,880,800	$47,302	12/31/2023
Rock Springs Capital Management LP	1,676,500	$42,164	12/31/2023
OLK	1,676,500	$42,164	12/31/2023
Water Island Capital LLC	1,644,551	$41,360	12/31/2023
OLK	1,644,551	$41,360	12/31/2023
Highland Capital Management Fund Advisors L.P.	1,473,606	$37,061	12/31/2023
OLK	1,473,606	$37,061	12/31/2023
Alliancebernstein L.P.	1,394,867	$35,081	12/31/2023
OLK	1,394,867	$35,081	12/31/2023
Price T Rowe Associates Inc. MD	866,196	$21,785	12/31/2023
OLK	866,196	$21,785	12/31/2023
Man Group plc	750,000	$18,862	12/31/2023
OLK	750,000	$18,862	12/31/2023
Millennium Management LLC	693,490	$17,441	12/31/2023
OLK	693,490	$17,441	12/31/2023
BlackRock Inc.	669,967	$16,850	12/31/2023
OLK	669,967	$16,850	12/31/2023
Tokio Marine Asset Management Co. Ltd.	665,400	$16,735	12/31/2023
OLK	665,400	$16,735	12/31/2023
Qube Research & Technologies Ltd	641,504	$16,134	12/31/2023
OLK	641,504	$16,134	12/31/2023
Gardner Lewis Asset Management L P	413,658	$10,403	12/31/2023
OLK	413,658	$10,403	12/31/2023
Goldman Sachs Group Inc.	400,021	$10,061	12/31/2023
OLK	400,021	$10,061	12/31/2023
TIG Advisors LLC	386,871	$9,730	12/31/2023
OLK	386,871	$9,730	12/31/2023
Gabelli Funds LLC	378,235	$9,513	12/31/2023
OLK	378,235	$9,513	12/31/2023
Principal Financial Group Inc.	358,590	$9,019	12/31/2023
OLK	358,590	$9,019	12/31/2023
Clearbridge Investments LLC	347,892	$8,749	12/31/2023
OLK	347,892	$8,749	12/31/2023
Jennison Associates LLC	340,351	$8,560	12/31/2023
OLK	340,351	$8,560	12/31/2023
Carlson Capital L P	325,000	$8,174	12/31/2023
OLK	325,000	$8,174	12/31/2023
Harvest Management LLC	320,734	$8,066	12/31/2023
OLK	320,734	$8,066	12/31/2023
CNH Partners LLC	262,404	$6,599	12/31/2023
OLK	262,404	$6,599	12/31/2023
New York Life Investment Management LLC	259,305	$6,522	12/31/2023
OLK	259,305	$6,522	12/31/2023
UBS Group AG	253,400	$6,373	12/31/2023
OLK	253,400	$6,373	12/31/2023
Gamco Investors INC. ET AL	167,500	$4,213	12/31/2023
OLK	167,500	$4,213	12/31/2023
FMR LLC	162,700	$4,092	12/31/2023
OLK	162,700	$4,092	12/31/2023
State of Wisconsin Investment Board	140,000	$3,521	12/31/2023
OLK	140,000	$3,521	12/31/2023
Chicago Capital Management LLC	127,500	$3,207	12/31/2023
OLK	127,500	$3,207	12/31/2023
Nomura Holdings Inc.	123,840	$3,115	12/31/2023
OLK	123,840	$3,115	12/31/2023
Carmignac Gestion	123,420	$3,104	12/31/2023
OLK	123,420	$3,104	12/31/2023
Citadel Advisors LLC		$2,941	12/31/2023
OLK	108,167	$2,720	12/31/2023
Call	42,900	$1,079	12/31/2023
Put	34,100	$858	12/31/2023
GABELLI & Co INVESTMENT ADVISERS INC.	116,843	$2,939	12/31/2023
OLK	116,843	$2,939	12/31/2023
ClearAlpha Technologies LP	89,432	$2,249	12/31/2023
OLK	89,432	$2,249	12/31/2023
BCK Capital Management LP	81,713	$2,055	12/31/2023
OLK	81,713	$2,055	12/31/2023
Marshall Wace LLP	81,000	$2,037	12/31/2023
OLK	81,000	$2,037	12/31/2023
Verition Fund Management LLC	75,100	$1,889	12/31/2023
OLK	75,100	$1,889	12/31/2023
Cubist Systematic Strategies LLC	73,170	$1,840	12/31/2023
OLK	73,170	$1,840	12/31/2023
Two Sigma Investments LP	69,715	$1,753	12/31/2023
OLK	69,715	$1,753	12/31/2023
Flow State Investments L.P.	60,000	$1,509	12/31/2023
OLK	60,000	$1,509	12/31/2023
Prelude Capital Management LLC	58,604	$1,474	12/31/2023
OLK	58,604	$1,474	12/31/2023
Picton Mahoney Asset Management	50,000	$1,300	12/31/2023
OLK	50,000	$1,300	12/31/2023
Moore Capital Management LP	50,000	$1,258	12/31/2023
OLK	50,000	$1,258	12/31/2023
Gilder Gagnon Howe & Co. LLC	45,109	$1,134	12/31/2023
OLK	45,109	$1,134	12/31/2023
Virtu Financial LLC	42,173	$1,061	12/31/2023
OLK	42,173	$1,061	12/31/2023
Guggenheim Capital LLC	39,817	$1,001	12/31/2023
OLK	39,817	$1,001	12/31/2023