There is a long list of 397 institutional holders of AR 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 AR by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-AR table below, the initial column indicates the name of each top institutional holder of AR, with a link to that fund's top holdings. The next columns indicate the amount of AR stock held by each of the institutional holders of AR, followed by the AR 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
FMR LLC	45,081,528	$1,022,449	12/31/2023
AR	45,081,528	$1,022,449	12/31/2023
Vanguard Group Inc.	27,694,160	$628,104	12/31/2023
AR	27,694,160	$628,104	12/31/2023
BlackRock Inc.	24,942,163	$565,688	12/31/2023
AR	24,942,163	$565,688	12/31/2023
State Street Corp	12,073,422	$273,825	12/31/2023
AR	12,073,422	$273,825	12/31/2023
Bank of New York Mellon Corp	8,840,690	$256,380	03/31/2024
AR	8,840,690	$256,380	03/31/2024
Wellington Management Group LLP	10,537,261	$238,985	12/31/2023
AR	10,537,261	$238,985	12/31/2023
Dimensional Fund Advisors LP	5,659,033	$128,352	12/31/2023
AR	5,659,033	$128,352	12/31/2023
Adage Capital Partners GP L.L.C.	4,748,835	$107,704	12/31/2023
AR	4,748,835	$107,704	12/31/2023
Morgan Stanley	4,401,603	$99,828	12/31/2023
AR	4,401,603	$99,828	12/31/2023
Geode Capital Management LLC	4,357,919	$98,854	12/31/2023
AR	4,357,919	$98,854	12/31/2023
Point72 Asset Management L.P.		$95,629	12/31/2023
AR	3,710,027	$84,143	12/31/2023
Call	562,900	$12,767	12/31/2023
Put	56,500	$1,281	12/31/2023
Millennium Management LLC		$92,146	12/31/2023
AR	3,195,683	$72,478	12/31/2023
Call	1,320,700	$29,953	12/31/2023
Put	453,500	$10,285	12/31/2023
Goldman Sachs Group Inc.	4,003,085	$90,790	12/31/2023
AR	4,003,085	$90,790	12/31/2023
Yorktown Energy Partners VIII L.P.	4,000,000	$90,720	12/31/2023
AR	4,000,000	$90,720	12/31/2023
Key Group Holdings Cayman LTD.	3,980,976	$90,289	12/31/2023
AR	3,980,976	$90,289	12/31/2023
Renaissance Technologies LLC	3,725,939	$84,504	12/31/2023
AR	3,725,939	$84,504	12/31/2023
Sourcerock Group LLC	3,697,280	$83,854	12/31/2023
AR	3,697,280	$83,854	12/31/2023
Eagle Asset Management Inc.	3,340,434	$75,761	12/31/2023
AR	3,340,434	$75,761	12/31/2023
Palo Duro Investment Partners LP	2,966,734	$67,286	12/31/2023
AR	2,966,734	$67,286	12/31/2023
Nuveen Asset Management LLC	2,906,280	$65,914	12/31/2023
AR	2,906,280	$65,914	12/31/2023
Susquehanna International Group LLP		$60,598	12/31/2023
Call	3,237,500	$73,426	12/31/2023
Put	1,429,000	$32,410	12/31/2023
AR	863,383	$19,582	12/31/2023
Neuberger Berman Group LLC	2,482,016	$56,292	12/31/2023
AR	2,482,016	$56,292	12/31/2023
Appaloosa LP	2,000,000	$45,360	12/31/2023
AR	2,000,000	$45,360	12/31/2023
Ameriprise Financial Inc.	1,987,514	$45,077	12/31/2023
AR	1,987,514	$45,077	12/31/2023
Northern Trust Corp	1,968,370	$44,643	12/31/2023
AR	1,968,370	$44,643	12/31/2023
American Century Companies Inc.	1,881,351	$42,669	12/31/2023
AR	1,881,351	$42,669	12/31/2023
Jane Street Group LLC		$42,107	12/31/2023
Call	2,214,900	$50,234	12/31/2023
Put	847,700	$19,226	12/31/2023
AR	489,354	$11,099	12/31/2023
Long Focus Capital Management LLC	1,806,637	$40,975	12/31/2023
AR	1,806,637	$40,975	12/31/2023
Charles Schwab Investment Management Inc.	1,782,069	$40,417	12/31/2023
AR	1,782,069	$40,417	12/31/2023
First Trust Advisors LP	1,779,182	$40,352	12/31/2023
AR	1,779,182	$40,352	12/31/2023
Cushing Asset Management LP	1,232,200	$35,734	03/31/2024
AR	1,232,200	$35,734	03/31/2024
Assenagon Asset Management S.A.	1,213,162	$35,182	03/31/2024
AR	1,213,162	$35,182	03/31/2024
Lazard Asset Management LLC	1,517,733	$34,421	12/31/2023
AR	1,517,733	$34,421	12/31/2023
Pennant Investors LP		$32,047	12/31/2023
AR	913,000	$20,707	12/31/2023
Call	500,000	$11,340	12/31/2023
Woodline Partners LP	1,400,363	$31,760	12/31/2023
AR	1,400,363	$31,760	12/31/2023
Vaughan Nelson Investment Management L.P.	1,073,905	$31,144	03/31/2024
AR	1,073,905	$31,144	03/31/2024
Principal Financial Group Inc.	1,064,090	$30,859	03/31/2024
AR	1,064,090	$30,859	03/31/2024
Citadel Advisors LLC		$26,842	12/31/2023
Call	1,956,000	$44,362	12/31/2023
Put	1,347,400	$30,559	12/31/2023
AR	574,918	$13,039	12/31/2023
SailingStone Capital Partners LLC	1,036,573	$23,509	12/31/2023
AR	1,036,573	$23,509	12/31/2023
Alyeska Investment Group L.P.	971,990	$22,045	12/31/2023
AR	971,990	$22,045	12/31/2023
Jefferies Financial Group Inc.	918,797	$20,838	12/31/2023
AR	918,797	$20,838	12/31/2023
D. E. Shaw & Co. Inc.		$20,837	12/31/2023
AR	1,095,314	$24,842	12/31/2023
Put	460,200	$10,437	12/31/2023
Call	283,600	$6,432	12/31/2023
Invesco Ltd.	904,113	$20,505	12/31/2023
AR	904,113	$20,505	12/31/2023
Rhumbline Advisers	817,575	$18,543	12/31/2023
AR	817,575	$18,543	12/31/2023
ExodusPoint Capital Management LP	812,758	$18,433	12/31/2023
AR	812,758	$18,433	12/31/2023
CIBC World Markets Inc.		$18,008	12/31/2023
Call	500,000	$11,340	12/31/2023
AR	294,018	$6,668	12/31/2023
Plustick Management LLC	775,000	$17,577	12/31/2023
AR	775,000	$17,577	12/31/2023
Summit Trail Advisors LLC	580,330	$16,830	03/31/2024
AR	580,330	$16,830	03/31/2024
Yaupon Capital Management LP		$16,522	12/31/2023
AR	403,480	$9,151	12/31/2023
Call	325,000	$7,371	12/31/2023
UBS Group AG		$16,287	12/31/2023
Call	600,000	$13,608	12/31/2023
AR	118,143	$2,679	12/31/2023