There is a long list of 337 institutional holders of IDCC 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 IDCC by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-IDCC table below, the initial column indicates the name of each top institutional holder of IDCC, with a link to that fund's top holdings. The next columns indicate the amount of IDCC stock held by each of the institutional holders of IDCC, followed by the IDCC 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
Steelhead Partners LLC		$87,190,650	12/31/2023
NOTE 2	45,971,000	$61,426,450	12/31/2023
NOTE 3	17,500,000	$25,764,200	12/31/2023
Goldman Sachs Group Inc.		$627,321	12/31/2023
CMN	3,990,000	$584,296	12/31/2023
IDCC	396,396	$43,025	12/31/2023
BlackRock Inc.		$481,399	12/31/2023
IDCC	4,390,364	$476,530	12/31/2023
NOTE 3	3,325,000	$4,869	12/31/2023
Vanguard Group Inc.	3,217,502	$349,228	12/31/2023
IDCC	3,217,502	$349,228	12/31/2023
State Street Corp		$128,103	12/31/2023
IDCC	1,036,873	$112,542	12/31/2023
NOTE 3	10,579,000	$15,561	12/31/2023
Pacer Advisors Inc.	1,151,777	$125,014	12/31/2023
IDCC	1,151,777	$125,014	12/31/2023
Dimensional Fund Advisors LP	936,056	$101,601	12/31/2023
IDCC	936,056	$101,601	12/31/2023
Disciplined Growth Investors Inc. MN	675,865	$73,358	12/31/2023
IDCC	675,865	$73,358	12/31/2023
Boston Partners	624,516	$67,636	12/31/2023
IDCC	624,516	$67,636	12/31/2023
Boston Trust Walden Corp	633,965	$67,492	03/31/2024
IDCC	633,965	$67,492	03/31/2024
Geode Capital Management LLC	618,383	$67,126	12/31/2023
IDCC	618,383	$67,126	12/31/2023
Linden Advisors LP		$64,767	12/31/2023
SDBCV	44,100,000	$64,767	12/31/2023
Fuller & Thaler Asset Management Inc.	471,135	$51,137	12/31/2023
IDCC	471,135	$51,137	12/31/2023
Morgan Stanley		$48,750	12/31/2023
IDCC	404,697	$43,926	12/31/2023
NOTE 2	3,129,000	$4,158	12/31/2023
NOTE 3	455,000	$666	12/31/2023
American Century Companies Inc.		$47,104	12/31/2023
IDCC	432,485	$46,942	12/31/2023
NOTE 3	110,000	$162	12/31/2023
Bank of Montreal Can		$45,055	12/31/2023
IDCC	320,144	$35,357	12/31/2023
NOTE 3	6,587,000	$9,698	12/31/2023
Nomura Holdings Inc.		$44,715	12/31/2023
IDCC	248,837	$27,009	12/31/2023
NOTE 3	163,127	$17,706	12/31/2023
D. E. Shaw & Co. Inc.	398,424	$43,245	12/31/2023
IDCC	398,424	$43,245	12/31/2023
Wells Fargo & Company MN		$40,565	12/31/2023
IDCC	268,924	$29,189	12/31/2023
NOTE 2	5,543,000	$7,372	12/31/2023
NOTE 3	2,720,000	$4,004	12/31/2023
JPMorgan Chase & Co.		$39,505	12/31/2023
BOND	21,811,000	$31,298	12/31/2023
IDCC	75,617	$8,207	12/31/2023
Bank of New York Mellon Corp		$36,649	12/31/2023
IDCC	329,517	$35,766	12/31/2023
NOTE	600,000	$883	12/31/2023
Neumeier Poma Investment Counsel LLC	337,100	$36,589	12/31/2023
IDCC	337,100	$36,589	12/31/2023
Fort Baker Capital Management LP		$34,455	12/31/2023
NOTE 2	25,772,000	$34,455	12/31/2023
Charles Schwab Investment Management Inc.	309,814	$33,627	12/31/2023
IDCC	309,814	$33,627	12/31/2023
Bragg Financial Advisors Inc	303,678	$32,961	12/31/2023
IDCC	303,678	$32,961	12/31/2023
Northern Trust Corp	297,601	$32,302	12/31/2023
IDCC	297,601	$32,302	12/31/2023
Renaissance Technologies LLC	294,267	$31,940	12/31/2023
IDCC	294,267	$31,940	12/31/2023
SG Americas Securities LLC		$30,484	12/31/2023
BND	200,000	$29,188	12/31/2023
IDCC	11,936	$1,296	12/31/2023
Royal Bank of Canada	277,517	$30,121	12/31/2023
IDCC	277,517	$30,121	12/31/2023
Thrivent Financial for Lutherans		$28,291	12/31/2023
NOTE 3	16,240,000	$23,782	12/31/2023
IDCC	22,903	$2,486	12/31/2023
NOTE 2	1,520,000	$2,023	12/31/2023
Deutsche Bank AG		$27,995	12/31/2023
IDCC	228,352	$24,785	12/31/2023
NOTE 3	1,169,000	$1,712	12/31/2023
Call	13,800	$1,498	12/31/2023
Invesco Ltd.	255,519	$27,734	12/31/2023
IDCC	255,519	$27,734	12/31/2023
III Capital Management		$27,578	12/31/2023
NOTE 3	18,750,000	$27,578	12/31/2023
Citadel Advisors LLC		$27,276	12/31/2023
IDCC	149,792	$16,258	12/31/2023
NOTE 3	9,000,000	$13,211	12/31/2023
Put	61,800	$6,708	12/31/2023
Call	41,600	$4,515	12/31/2023
Capital Management Corp VA	237,654	$25,795	12/31/2023
IDCC	237,654	$25,795	12/31/2023
BNP Paribas Arbitrage SA		$25,502	12/31/2023
Bond	15,664,000	$22,916	12/31/2023
IDCC	23,824	$2,586	12/31/2023
Robeco Institutional Asset Management B.V.	207,347	$22,505	12/31/2023
IDCC	207,347	$22,505	12/31/2023
Bank of America Corp DE		$22,373	12/31/2023
NOTE 3	9,679,000	$14,174	12/31/2023
IDCC	75,536	$8,199	12/31/2023
Credit Suisse AG		$19,556	12/31/2023
IDCC	173,814	$18,866	12/31/2023
NOTE 3	690,000	$690	12/31/2023
Capstone Investment Advisors LLC		$19,056	12/31/2023
NOTE 3	12,500,000	$18,368	12/31/2023
IDCC	6,336	$688	12/31/2023
Norges Bank	174,932	$18,987	12/31/2023
IDCC	174,932	$18,987	12/31/2023
Nuveen Asset Management LLC	157,918	$17,140	12/31/2023
IDCC	157,918	$17,140	12/31/2023
Principal Financial Group Inc.	149,415	$16,218	12/31/2023
IDCC	149,415	$16,218	12/31/2023
BlueCrest Capital Management Ltd		$16,195	12/31/2023
NOTE 3	11,000,000	$16,195	12/31/2023
Cardinal Capital Management LLC CT	146,148	$15,863	12/31/2023
IDCC	146,148	$15,863	12/31/2023
Crossmark Global Holdings Inc.	122,616	$13,309	12/31/2023
IDCC	122,616	$13,309	12/31/2023
Skandinaviska Enskilda Banken AB publ	120,600	$13,090	12/31/2023
IDCC	120,600	$13,090	12/31/2023
Uniplan Investment Counsel Inc.	100,428	$10,989	12/31/2023
IDCC	100,428	$10,989	12/31/2023
Kohlberg Kravis Roberts & Co. L.P.		$10,869	12/31/2023
NOTE 3	7,500,000	$10,869	12/31/2023
325 Capital LLC	93,966	$10,199	12/31/2023
IDCC	93,966	$10,199	12/31/2023