There is a long list of 507 institutional holders of IYR 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 IYR by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-IYR table below, the initial column indicates the name of each top institutional holder of IYR, with a link to that fund's top holdings. The next columns indicate the amount of IYR stock held by each of the institutional holders of IYR, followed by the IYR 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
Barclays PLC		$1,113,093	12/31/2023
IYR	12,366,929	$1,130,461	12/31/2023
Put	365,000	$33,365	12/31/2023
Call	175,000	$15,997	12/31/2023
Cibc World Markets Corp	4,648,278	$424,899	12/31/2023
IYR	4,648,278	$424,899	12/31/2023
WealthNavi Inc.	4,133,691	$371,619	03/31/2024
IYR	4,133,691	$371,619	03/31/2024
BNP Paribas Arbitrage SA		$336,942	12/31/2023
IYR	3,705,247	$338,697	12/31/2023
Put	292	$2,669	12/31/2023
Call	100	$914	12/31/2023
Twin Tree Management LP		$253,434	12/31/2023
Call	8,094,500	$1,055,978	12/31/2023
Put	3,642,100	$857,356	12/31/2023
IYR	599,623	$54,812	12/31/2023
Goldman Sachs Group Inc.		$213,941	12/31/2023
IYR	2,050,459	$187,432	12/31/2023
Call	435,000	$39,763	12/31/2023
Put	145,000	$13,254	12/31/2023
Bank of Montreal Can	1,909,032	$176,519	12/31/2023
IYR	1,909,032	$176,519	12/31/2023
Morgan Stanley	1,885,645	$172,367	12/31/2023
IYR	1,885,645	$172,367	12/31/2023
Bank of America Corp DE		$144,582	12/31/2023
IYR	1,681,179	$153,677	12/31/2023
Put	201,700	$18,437	12/31/2023
Call	102,200	$9,342	12/31/2023
Wolverine Trading LLC		$132,249	12/31/2023
IYR	1,309,368	$119,689	12/31/2023
Call	352,300	$32,204	12/31/2023
Put	214,900	$19,644	12/31/2023
Schroder Investment Management Group	1,224,326	$111,916	12/31/2023
IYR	1,224,326	$111,916	12/31/2023
BlackRock Inc.	1,057,458	$96,662	12/31/2023
IYR	1,057,458	$96,662	12/31/2023
Royal Bank of Canada		$81,003	12/31/2023
IYR	756,851	$69,184	12/31/2023
Call	219,300	$20,046	12/31/2023
Put	90,000	$8,227	12/31/2023
Waterfront Capital Partners LLC		$73,128	12/31/2023
Call	800,000	$73,128	12/31/2023
Stifel Financial Corp	680,250	$62,182	12/31/2023
IYR	680,250	$62,182	12/31/2023
Susquehanna International Group LLP		$59,204	12/31/2023
Call	3,626,800	$331,526	12/31/2023
Put	3,242,000	$296,351	12/31/2023
IYR	262,868	$24,029	12/31/2023
JPMorgan Chase & Co.	617,273	$56,425	12/31/2023
IYR	617,273	$56,425	12/31/2023
Wells Fargo & Company MN		$52,701	12/31/2023
IYR	476,538	$43,560	12/31/2023
Call	100,000	$9,141	12/31/2023
Marathon Trading Investment Management LLC		$49,789	12/31/2023
Call	781,400	$57,979	12/31/2023
Put	161,100	$9,909	12/31/2023
IYR	18,800	$1,719	12/31/2023
US Bancorp DE	507,742	$46,413	12/31/2023
IYR	507,742	$46,413	12/31/2023
Ilmarinen Mutual Pension Insurance Co	493,127	$45,077	12/31/2023
IYR	493,127	$45,077	12/31/2023
Balyasny Asset Management LLC		$44,545	12/31/2023
IYR	494,611	$45,212	12/31/2023
Put	152,100	$13,903	12/31/2023
Call	144,800	$13,236	12/31/2023
Citigroup Inc.		$42,774	12/31/2023
IYR	467,934	$42,774	12/31/2023
Put	175,000	$15,997	12/31/2023
Call	175,000	$15,997	12/31/2023
Capstone Investment Advisors LLC	455,741	$41,659	12/31/2023
IYR	455,741	$41,659	12/31/2023
Money Design Co. Ltd.	444,553	$40,637	12/31/2023
IYR	444,553	$40,637	12/31/2023
The PNC Financial Services Group Inc.	430,832	$39,382	12/31/2023
IYR	430,832	$39,382	12/31/2023
Green Harvest Asset Management LLC	383,353	$35,042	12/31/2023
IYR	383,353	$35,042	12/31/2023
CI Private Wealth LLC	382,339	$34,950	12/31/2023
IYR	382,339	$34,950	12/31/2023
Connable Office Inc.	339,656	$31,048	12/31/2023
IYR	339,656	$31,048	12/31/2023
Toronto Dominion Bank	336,300	$30,741	12/31/2023
IYR	336,300	$30,741	12/31/2023
Squarepoint Ops LLC		$28,410	12/31/2023
Call	433,300	$39,608	12/31/2023
Put	122,500	$11,198	12/31/2023
LPL Financial LLC	280,791	$25,667	12/31/2023
IYR	280,791	$25,667	12/31/2023
Citadel Advisors LLC		$25,377	12/31/2023
Put	1,702,600	$155,635	12/31/2023
Call	1,466,800	$134,080	12/31/2023
IYR	513,420	$46,932	12/31/2023
Capital Fund Management S.A.		$23,343	12/31/2023
IYR	553,971	$50,638	12/31/2023
Put	511,300	$46,738	12/31/2023
Call	212,700	$19,443	12/31/2023
Qube Research & Technologies Ltd	246,197	$22,505	12/31/2023
IYR	246,197	$22,505	12/31/2023
FUKOKU MUTUAL LIFE INSURANCE Co	243,000	$22,213	12/31/2023
IYR	243,000	$22,213	12/31/2023
Washington Trust Bank	237,470	$21,707	12/31/2023
IYR	237,470	$21,707	12/31/2023
Mariner LLC	234,204	$21,409	12/31/2023
IYR	234,204	$21,409	12/31/2023
Pathstone Holdings LLC	222,792	$20,365	12/31/2023
IYR	222,792	$20,365	12/31/2023
Parallax Volatility Advisers L.P.		$18,790	12/31/2023
Call	305,600	$27,935	12/31/2023
Put	100,900	$9,223	12/31/2023
IYR	856	$78	12/31/2023
Passaic Partners LLC	199,122	$18,202	12/31/2023
IYR	199,122	$18,202	12/31/2023
Naya Capital Management UK Ltd.		$17,368	12/31/2023
Call	190,000	$17,368	12/31/2023
Northwestern Mutual Wealth Management Co.	176,154	$16,102	12/31/2023
IYR	176,154	$16,102	12/31/2023
Credit Suisse AG	174,056	$15,910	12/31/2023
IYR	174,056	$15,910	12/31/2023
SG Americas Securities LLC	170,239	$15,562	12/31/2023
IYR	170,239	$15,562	12/31/2023
Aspect Partners LLC	167,841	$15,342	12/31/2023
IYR	167,841	$15,342	12/31/2023
1832 Asset Management L.P.	161,763	$14,787	12/31/2023
IYR	161,763	$14,787	12/31/2023
Sand Hill Global Advisors LLC	159,931	$14,619	12/31/2023
IYR	159,931	$14,619	12/31/2023
Omega Financial Group LLC	145,792	$13,107	03/31/2024
IYR	145,792	$13,107	03/31/2024
Captrust Financial Advisors	131,667	$12,036	12/31/2023
IYR	131,667	$12,036	12/31/2023