There is a long list of 829 institutional holders of Marathon Oil 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 Marathon Oil by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-Marathon Oil table below, the initial column indicates the name of each top institutional holder of Marathon Oil, with a link to that fund's top holdings. The next columns indicate the amount of Marathon Oil stock held by each of the institutional holders of Marathon Oil, followed by the Marathon Oil 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.	68,915,765	$1,665,005	12/31/2023
MRO	68,915,765	$1,665,005	12/31/2023
BlackRock Inc.	45,714,021	$1,104,451	12/31/2023
MRO	45,714,021	$1,104,451	12/31/2023
State Street Corp	38,071,872	$919,816	12/31/2023
MRO	38,071,872	$919,816	12/31/2023
Invesco Ltd.	31,520,678	$761,540	12/31/2023
MRO	31,520,678	$761,540	12/31/2023
Hotchkis & Wiley Capital Management LLC	19,388,560	$468,428	12/31/2023
MRO	19,388,560	$468,428	12/31/2023
Geode Capital Management LLC	13,114,489	$315,994	12/31/2023
MRO	13,114,489	$315,994	12/31/2023
Morgan Stanley	11,680,768	$282,207	12/31/2023
MRO	11,680,768	$282,207	12/31/2023
Bank of New York Mellon Corp	8,977,063	$216,886	12/31/2023
MRO	8,977,063	$216,886	12/31/2023
Wellington Management Group LLP	8,288,686	$200,255	12/31/2023
MRO	8,288,686	$200,255	12/31/2023
Dimensional Fund Advisors LP	8,186,365	$197,801	12/31/2023
MRO	8,186,365	$197,801	12/31/2023
Pacer Advisors Inc.	8,164,081	$197,244	12/31/2023
MRO	8,164,081	$197,244	12/31/2023
Northern Trust Corp	7,238,134	$174,873	12/31/2023
MRO	7,238,134	$174,873	12/31/2023
Goldman Sachs Group Inc.		$143,246	12/31/2023
MRO	5,881,055	$142,086	12/31/2023
Call	48,000	$1,160	12/31/2023
Charles Schwab Investment Management Inc.	5,136,561	$124,099	12/31/2023
MRO	5,136,561	$124,099	12/31/2023
LSV Asset Management	5,024,800	$121,399	12/31/2023
MRO	5,024,800	$121,399	12/31/2023
JPMorgan Chase & Co.		$120,236	12/31/2023
MRO	5,074,042	$122,589	12/31/2023
Put	299,700	$7,241	12/31/2023
Call	202,300	$4,888	12/31/2023
Legal & General Group Plc	4,441,020	$107,295	12/31/2023
MRO	4,441,020	$107,295	12/31/2023
Point72 Asset Management L.P.		$81,374	12/31/2023
MRO	3,369,038	$81,396	12/31/2023
Put	83,200	$2,010	12/31/2023
Call	82,300	$1,988	12/31/2023
Qube Research & Technologies Ltd	3,170,150	$76,591	12/31/2023
MRO	3,170,150	$76,591	12/31/2023
Barclays PLC		$67,503	12/31/2023
MRO	1,916,468	$46,301	12/31/2023
Call	912,200	$22,038	12/31/2023
Put	34,600	$836	12/31/2023
Amundi	2,880,921	$66,866	12/31/2023
MRO	2,880,921	$66,866	12/31/2023
Millennium Management LLC		$63,930	12/31/2023
MRO	3,038,515	$73,411	12/31/2023
Put	598,000	$14,448	12/31/2023
Call	205,600	$4,967	12/31/2023
Nuveen Asset Management LLC	2,584,230	$62,435	12/31/2023
MRO	2,584,230	$62,435	12/31/2023
Victory Capital Management Inc.	2,527,604	$61,067	12/31/2023
MRO	2,527,604	$61,067	12/31/2023
Merewether Investment Management LP	2,218,885	$53,608	12/31/2023
MRO	2,218,885	$53,608	12/31/2023
SIR Capital Management L.P.	2,167,744	$52,373	12/31/2023
MRO	2,167,744	$52,373	12/31/2023
First Trust Advisors LP	2,104,523	$50,845	12/31/2023
MRO	2,104,523	$50,845	12/31/2023
Janus Henderson Group PLC	2,104,455	$50,843	12/31/2023
MRO	2,104,455	$50,843	12/31/2023
Bank of Montreal Can	1,923,721	$47,420	12/31/2023
MRO	1,923,721	$47,420	12/31/2023
Two Sigma Investments LP	1,952,785	$47,179	12/31/2023
MRO	1,952,785	$47,179	12/31/2023
Swiss National Bank	1,894,009	$45,759	12/31/2023
MRO	1,894,009	$45,759	12/31/2023
Fisher Asset Management LLC	1,865,033	$45,059	12/31/2023
MRO	1,865,033	$45,059	12/31/2023
D. E. Shaw & Co. Inc.		$44,703	12/31/2023
MRO	2,157,508	$52,125	12/31/2023
Put	339,500	$8,202	12/31/2023
Call	32,300	$780	12/31/2023
Balyasny Asset Management LLC		$44,196	12/31/2023
MRO	1,859,107	$44,916	12/31/2023
Put	139,800	$3,378	12/31/2023
Call	110,000	$2,658	12/31/2023
Sumitomo Mitsui Trust Holdings Inc.	1,506,440	$42,693	03/31/2024
MRO	1,506,440	$42,693	03/31/2024
Encompass Capital Advisors LLC	1,763,347	$42,602	12/31/2023
MRO	1,763,347	$42,602	12/31/2023
Prudential Financial Inc.	1,737,458	$42,115	12/31/2023
MRO	1,737,458	$42,115	12/31/2023
UBS Asset Management Americas Inc.	1,674,999	$40,468	12/31/2023
MRO	1,674,999	$40,468	12/31/2023
Bank of America Corp DE		$40,057	12/31/2023
MRO	1,558,084	$37,643	12/31/2023
Call	239,900	$5,796	12/31/2023
Put	140,000	$3,382	12/31/2023
Panagora Asset Management Inc.	1,637,976	$39,574	12/31/2023
MRO	1,637,976	$39,574	12/31/2023
Epoch Investment Partners Inc.	1,467,965	$35,466	12/31/2023
MRO	1,467,965	$35,466	12/31/2023
Susquehanna International Group LLP		$35,308	12/31/2023
Call	1,796,900	$43,413	12/31/2023
Put	1,365,500	$32,990	12/31/2023
MRO	1,030,002	$24,885	12/31/2023
Renaissance Technologies LLC	1,457,146	$35,205	12/31/2023
MRO	1,457,146	$35,205	12/31/2023
Woodline Partners LP	1,435,353	$34,678	12/31/2023
MRO	1,435,353	$34,678	12/31/2023
FMR LLC	1,427,726	$34,494	12/31/2023
MRO	1,427,726	$34,494	12/31/2023
Wells Fargo & Company MN		$33,743	12/31/2023
MRO	1,344,245	$32,477	12/31/2023
Call	52,400	$1,266	12/31/2023
UBS Group AG		$32,742	12/31/2023
MRO	1,558,626	$37,656	12/31/2023
Put	209,900	$5,071	12/31/2023
Call	6,500	$157	12/31/2023
BNP Paribas Arbitrage SA	1,338,827	$32,346	12/31/2023
MRO	1,338,827	$32,346	12/31/2023
Deutsche Bank AG	1,298,348	$31,368	12/31/2023
MRO	1,298,348	$31,368	12/31/2023
Royal Bank of Canada	1,292,074	$31,217	12/31/2023
MRO	1,292,074	$31,217	12/31/2023