There is a long list of 78 institutional holders of OTLK 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 OTLK by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-OTLK table below, the initial column indicates the name of each top institutional holder of OTLK, with a link to that fund's top holdings. The next columns indicate the amount of OTLK stock held by each of the institutional holders of OTLK, followed by the OTLK 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.	10,366,285	$4,084	12/31/2023
OTLK	10,366,285	$4,084	12/31/2023
Vanguard Group Inc.	6,560,400	$2,585	12/31/2023
OTLK	6,560,400	$2,585	12/31/2023
Geode Capital Management LLC	2,970,346	$1,170	12/31/2023
OTLK	2,970,346	$1,170	12/31/2023
State Street Corp	2,826,493	$1,114	12/31/2023
OTLK	2,826,493	$1,114	12/31/2023
Northern Trust Corp	1,373,651	$541	12/31/2023
OTLK	1,373,651	$541	12/31/2023
Morgan Stanley	504,471	$199	12/31/2023
OTLK	504,471	$199	12/31/2023
Bank of New York Mellon Corp	434,567	$171	12/31/2023
OTLK	434,567	$171	12/31/2023
Charles Schwab Investment Management Inc.	354,615	$140	12/31/2023
OTLK	354,615	$140	12/31/2023
Scotia Capital Inc.	284,080	$112	12/31/2023
OTLK	284,080	$112	12/31/2023
Millennium Management LLC	275,572	$109	12/31/2023
OTLK	275,572	$109	12/31/2023
Bank of America Corp DE	216,044	$85	12/31/2023
OTLK	216,044	$85	12/31/2023
Barclays PLC	215,903	$85	12/31/2023
OTLK	215,903	$85	12/31/2023
LPL Financial LLC	201,200	$79	12/31/2023
OTLK	201,200	$79	12/31/2023
Rhumbline Advisers	193,831	$76	12/31/2023
OTLK	193,831	$76	12/31/2023
First Merchants Corp	149,170	$58	12/31/2023
OTLK	149,170	$58	12/31/2023
Gables Capital Management Inc.	146,500	$58	12/31/2023
OTLK	146,500	$58	12/31/2023
UBS Group AG	125,813	$50	12/31/2023
OTLK	125,813	$50	12/31/2023
Ancora Advisors LLC	122,000	$48	12/31/2023
OTLK	122,000	$48	12/31/2023
Armstrong Advisory Group Inc.	3,580	$43	03/31/2024
OTLK	3,580	$43	03/31/2024
Renaissance Technologies LLC	105,418	$42	12/31/2023
OTLK	105,418	$42	12/31/2023
JPMorgan Chase & Co.	100,788	$40	12/31/2023
OTLK	100,788	$40	12/31/2023
Commonwealth Equity Services LLC	100,000	$39	12/31/2023
OTLK	100,000	$39	12/31/2023
Alliancebernstein L.P.	90,530	$36	12/31/2023
OTLK	90,530	$36	12/31/2023
BNP Paribas Arbitrage SA	86,381	$34	12/31/2023
OTLK	86,381	$34	12/31/2023
American International Group Inc.	78,175	$31	12/31/2023
OTLK	78,175	$31	12/31/2023
Captrust Financial Advisors	76,138	$30	12/31/2023
OTLK	76,138	$30	12/31/2023
Virtu Financial LLC	68,146	$27	12/31/2023
OTLK	68,146	$27	12/31/2023
Lincoln National Corp	63,300	$25	12/31/2023
OTLK	63,300	$25	12/31/2023
Goldman Sachs Group Inc.	55,334	$22	12/31/2023
OTLK	55,334	$22	12/31/2023
Susquehanna International Group LLP	53,276	$21	12/31/2023
OTLK	53,276	$21	12/31/2023
Jane Street Group LLC	52,883	$21	12/31/2023
OTLK	52,883	$21	12/31/2023
CI Private Wealth LLC	54,000	$21	12/31/2023
OTLK	54,000	$21	12/31/2023
Royal Bank of Canada	52,287	$20	12/31/2023
OTLK	52,287	$20	12/31/2023
Wexford Capital LP	48,700	$19	12/31/2023
OTLK	48,700	$19	12/31/2023
Wells Fargo & Company MN	40,527	$16	12/31/2023
OTLK	40,527	$16	12/31/2023
Invesco Ltd.	40,175	$16	12/31/2023
OTLK	40,175	$16	12/31/2023
State Board of Administration of Florida Retirement System	40,849	$16	12/31/2023
OTLK	40,849	$16	12/31/2023
Advisor Group Holdings Inc.	40,538	$16	12/31/2023
OTLK	40,538	$16	12/31/2023
SG Americas Securities LLC	37,519	$15	12/31/2023
OTLK	37,519	$15	12/31/2023
Price T Rowe Associates Inc. MD	33,369	$14	12/31/2023
OTLK	33,369	$14	12/31/2023
New York State Common Retirement Fund	36,263	$14	12/31/2023
OTLK	36,263	$14	12/31/2023
Neuberger Berman Group LLC	33,371	$13	12/31/2023
OTLK	33,371	$13	12/31/2023
Solutions 4 Wealth Ltd	32,798	$13	12/31/2023
OTLK	32,798	$13	12/31/2023
Voya Investment Management LLC	30,445	$12	12/31/2023
OTLK	30,445	$12	12/31/2023
Prospera Financial Services Inc	30,500	$12	12/31/2023
OTLK	30,500	$12	12/31/2023
D.A. Davidson & CO.	28,000	$11	12/31/2023
OTLK	28,000	$11	12/31/2023
Atlas Private Wealth Advisors	27,706	$11	12/31/2023
OTLK	27,706	$11	12/31/2023
FMR LLC	25,883	$10	12/31/2023
OTLK	25,883	$10	12/31/2023
Citigroup Inc.	24,276	$10	12/31/2023
OTLK	24,276	$10	12/31/2023
California State Teachers Retirement System	25,887	$10	12/31/2023
OTLK	25,887	$10	12/31/2023