There is a long list of 184 institutional holders of DO 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 DO by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-DO table below, the initial column indicates the name of each top institutional holder of DO, with a link to that fund's top holdings. The next columns indicate the amount of DO stock held by each of the institutional holders of DO, followed by the DO 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.	8,461,107	$109,994	12/31/2023
DO	8,461,107	$109,994	12/31/2023
Key Group Holdings Cayman LTD.	6,887,848	$89,542	12/31/2023
DO	6,887,848	$89,542	12/31/2023
Vanguard Group Inc.	5,953,262	$77,392	12/31/2023
DO	5,953,262	$77,392	12/31/2023
Capital Research Global Investors	5,845,250	$75,988	12/31/2023
DO	5,845,250	$75,988	12/31/2023
Wellington Management Group LLP	4,045,884	$52,596	12/31/2023
DO	4,045,884	$52,596	12/31/2023
Nuveen Asset Management LLC	3,451,615	$44,871	12/31/2023
DO	3,451,615	$44,871	12/31/2023
Victory Capital Management Inc.	3,315,856	$43,106	12/31/2023
DO	3,315,856	$43,106	12/31/2023
Orbis Allan Gray Ltd	3,279,968	$42,640	12/31/2023
DO	3,279,968	$42,640	12/31/2023
State Street Corp	3,116,246	$40,511	12/31/2023
DO	3,116,246	$40,511	12/31/2023
Millennium Management LLC	2,986,803	$38,828	12/31/2023
DO	2,986,803	$38,828	12/31/2023
Shenkman Capital Management Inc.	2,280,975	$29,173	12/31/2023
DO	2,280,975	$29,173	12/31/2023
Neuberger Berman Group LLC	2,242,014	$29,146	12/31/2023
DO	2,242,014	$29,146	12/31/2023
Geode Capital Management LLC	2,176,562	$28,299	12/31/2023
DO	2,176,562	$28,299	12/31/2023
Contrarius Investment Management Ltd	1,918,894	$24,946	12/31/2023
DO	1,918,894	$24,946	12/31/2023
Webs Creek Capital Management LP	1,875,734	$24,385	12/31/2023
DO	1,875,734	$24,385	12/31/2023
Balyasny Asset Management LLC	1,869,585	$24,305	12/31/2023
DO	1,869,585	$24,305	12/31/2023
State Farm Mutual Automobile Insurance Co.	1,825,922	$23,737	12/31/2023
DO	1,825,922	$23,737	12/31/2023
Adage Capital Partners GP L.L.C.	1,797,506	$23,368	12/31/2023
DO	1,797,506	$23,368	12/31/2023
Edmond DE Rothschild Holding S.A.	1,760,000	$22,880	12/31/2023
DO	1,760,000	$22,880	12/31/2023
FMR LLC	1,448,834	$18,835	12/31/2023
DO	1,448,834	$18,835	12/31/2023
Two Sigma Investments LP	1,166,552	$15,165	12/31/2023
DO	1,166,552	$15,165	12/31/2023
Morgan Stanley	1,130,003	$14,690	12/31/2023
DO	1,130,003	$14,690	12/31/2023
Marshall Wace LLP	1,117,350	$14,526	12/31/2023
DO	1,117,350	$14,526	12/31/2023
Assenagon Asset Management S.A.	1,043,907	$14,239	03/31/2024
DO	1,043,907	$14,239	03/31/2024
Charles Schwab Investment Management Inc.	1,056,946	$13,740	12/31/2023
DO	1,056,946	$13,740	12/31/2023
ExodusPoint Capital Management LP	1,032,595	$13,424	12/31/2023
DO	1,032,595	$13,424	12/31/2023
Northern Trust Corp	926,399	$12,043	12/31/2023
DO	926,399	$12,043	12/31/2023
SIR Capital Management L.P.	888,863	$11,555	12/31/2023
DO	888,863	$11,555	12/31/2023
Voloridge Investment Management LLC	820,214	$10,663	12/31/2023
DO	820,214	$10,663	12/31/2023
Private Management Group Inc.	790,329	$10,274	12/31/2023
DO	790,329	$10,274	12/31/2023
Hosking Partners LLP	756,473	$9,834	12/31/2023
DO	756,473	$9,834	12/31/2023
Two Sigma Advisers LP	754,100	$9,803	12/31/2023
DO	754,100	$9,803	12/31/2023
Goehring & Rozencwajg Associates LLC	703,307	$9,143	12/31/2023
DO	703,307	$9,143	12/31/2023
Invesco Ltd.	664,549	$8,639	12/31/2023
DO	664,549	$8,639	12/31/2023
Putnam Investments LLC	636,644	$8,276	12/31/2023
DO	636,644	$8,276	12/31/2023
Rockefeller Capital Management L.P.	572,718	$7,445	12/31/2023
DO	572,718	$7,445	12/31/2023
CWA Asset Management Group LLC	546,199	$7,101	12/31/2023
DO	546,199	$7,101	12/31/2023
LMR Partners LLP	505,568	$6,572	12/31/2023
DO	505,568	$6,572	12/31/2023
Bank of New York Mellon Corp	392,820	$5,358	03/31/2024
DO	392,820	$5,358	03/31/2024
MetLife Investment Management LLC	392,476	$5,102	12/31/2023
DO	392,476	$5,102	12/31/2023
Capital World Investors	392,012	$5,096	12/31/2023
DO	392,012	$5,096	12/31/2023
Qube Research & Technologies Ltd	390,272	$5,074	12/31/2023
DO	390,272	$5,074	12/31/2023
Moody Aldrich Partners LLC	373,781	$4,859	12/31/2023
DO	373,781	$4,859	12/31/2023
Kore Advisors LP	342,859	$4,457	12/31/2023
DO	342,859	$4,457	12/31/2023
Deutsche Bank AG	321,287	$4,177	12/31/2023
DO	321,287	$4,177	12/31/2023
Algert Global LLC	300,105	$3,901	12/31/2023
DO	300,105	$3,901	12/31/2023
Citadel Advisors LLC		$3,757	12/31/2023
Call	291,200	$3,786	12/31/2023
Put	45,300	$589	12/31/2023
DO	43,045	$560	12/31/2023
Goldman Sachs Group Inc.	285,251	$3,708	12/31/2023
DO	285,251	$3,708	12/31/2023
Group One Trading L.P.		$3,633	12/31/2023
Call	189,800	$2,467	12/31/2023
DO	104,159	$1,354	12/31/2023
Put	14,500	$188	12/31/2023
First Trust Advisors LP	277,092	$3,602	12/31/2023
DO	277,092	$3,602	12/31/2023