William Blair & Company’s InterDigital IDCC Stock Holding History

William Blair & Company’s Portfolio IDCC Stock Details IDCC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$207K	Buy	684 +21	+3%	+$7.14K	﹤0.01%	1471
2025 Q4	$211K	Sell	663 -303	-31%	-$107K	﹤0.01%	1442
2025 Q3	$333K	Sell	966 -3,286	-77%	-$893K	﹤0.01%	1274
2025 Q2	$953K	Buy	4,252 +5	+0.1%	+$1.06K	﹤0.01%	912
2025 Q1	$878K	Sell	4,247 -40	-0.9%	-$8.05K	﹤0.01%	920
2024 Q4	$830K	Hold	4,287	–	–	﹤0.01%	954
2024 Q3	$607K	Sell	4,287 -50	-1%	-$6.55K	﹤0.01%	1059
2024 Q2	$506K	Sell	4,337 -42	-1%	-$4.49K	﹤0.01%	1095
2024 Q1	$466K	Buy	4,379 +299	+7%	+$31.6K	﹤0.01%	1101
2023 Q4	$443K	Hold	4,080	–	–	﹤0.01%	1104
2023 Q3	$327K	Hold	4,080	–	–	﹤0.01%	1193
2023 Q2	$394K	Hold	4,080	–	–	﹤0.01%	1136
2023 Q1	$297K	Hold	4,080	–	–	﹤0.01%	1244
2022 Q4	$202K	Buy	+4,080	New	+$199K	﹤0.01%	1366
2022 Q3	–	Sell	-4,080	Closed	-$248K	–	1857
2022 Q2	$248K	Hold	4,080	–	–	﹤0.01%	1332
2022 Q1	$260K	Hold	4,080	–	–	﹤0.01%	1418
2021 Q4	$292K	Hold	4,080	–	–	﹤0.01%	1434
2021 Q3	$277K	Hold	4,080	–	–	﹤0.01%	1364
2021 Q2	$298K	Hold	4,080	–	–	﹤0.01%	1343
2021 Q1	$259K	Hold	4,080	–	–	﹤0.01%	1391
2020 Q4	$248K	Hold	4,080	–	–	﹤0.01%	1345
2020 Q3	$233K	Hold	4,080	–	–	﹤0.01%	1241
2020 Q2	$231K	Buy	+4,080	New	+$217K	﹤0.01%	1181
2020 Q1	–	Sell	-4,080	Closed	-$222K	–	1708
2019 Q4	$222K	Hold	4,080	–	–	﹤0.01%	1270
2019 Q3	$214K	Hold	4,080	–	–	﹤0.01%	1244
2019 Q2	$332K	Hold	4,080	–	–	﹤0.01%	1120
2019 Q1	$332K	Hold	4,080	–	–	﹤0.01%	1109
2018 Q4	$332K	Hold	4,080	–	–	﹤0.01%	1052
2018 Q3	$326K	Sell	4,080 -760	-16%	-$62.3K	﹤0.01%	1108
2018 Q2	$392K	Sell	4,840 -256	-5%	-$20.4K	﹤0.01%	1027
2018 Q1	$375K	Buy	5,096 +462	+10%	+$35.4K	﹤0.01%	1010
2017 Q4	$353K	Buy	4,634 +554	+14%	+$41.4K	﹤0.01%	1080
2017 Q3	$301K	Sell	4,080 -510	-11%	-$37.3K	﹤0.01%	1100
2017 Q2	$355K	Sell	4,590 -3,651	-44%	-$306K	﹤0.01%	1109
2017 Q1	$693K	Buy	8,241 +2,505	+44%	+$225K	0.01%	801
2016 Q4	$524K	Sell	5,736 -291	-5%	-$23.3K	﹤0.01%	822
2016 Q3	$477K	Sell	6,027 -5,042	-46%	-$337K	﹤0.01%	851
2016 Q2	$616K	Buy	11,069 +200	+2%	+$11.3K	0.01%	743
2016 Q1	$604K	Buy	10,869 +534	+5%	+$25.8K	0.01%	734
2015 Q4	$506K	Buy	10,335 +47	+0.5%	+$2.39K	﹤0.01%	801
2015 Q3	$520K	Buy	10,288 +416	+4%	+$21.5K	﹤0.01%	968
2015 Q2	$561K	Buy	9,872 +30	+0.3%	+$1.67K	﹤0.01%	1724
2015 Q1	$498K	Sell	9,842 -42	-0.4%	-$2.18K	﹤0.01%	1721
2014 Q4	$522K	Sell	9,884 -59	-0.6%	-$2.84K	﹤0.01%	1679
2014 Q3	$395K	Hold	9,943	–	–	﹤0.01%	1751
2014 Q2	$475K	Sell	9,943 -84	-0.8%	-$3.25K	﹤0.01%	1679
2014 Q1	$331K	Buy	10,027 +371	+4%	+$11K	﹤0.01%	1732
2013 Q4	$284K	Hold	9,656	–	–	﹤0.01%	1760
2013 Q3	$360K	Hold	9,656	–	–	﹤0.01%	1663
2013 Q2	$431K	Buy	+9,656	New	+$433K	﹤0.01%	1549

Other funds holding IDCC

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

DGI

Disciplined Growth Investors Minneapolis, Minnesota $4.89B AUM 33.85% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

William Blair & Company's IDCC Position: Q1 2026 in Review

William Blair & Company increased its InterDigital (IDCC) stake by 3.2% in Q1 2026, buying an estimated $7.14K and bringing the position to 684 shares worth $207K. The position accounts for ﹤0.01% of the portfolio, ranked #1471.

William Blair & Company first reported a position in IDCC in Q2 2013 and has held it in 50 quarters since. The position peaked at $953K in Q2 2025. 572 funds tracked by Wall St. Rank hold IDCC as of Q1 2026.

William Blair & Company held 684 shares of InterDigital worth $207K as of Q1 2026.
William Blair & Company bought 21 InterDigital shares in Q1 2026, an estimated $7.14K.
InterDigital made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1471 holding.
William Blair & Company first reported a position in InterDigital in Q2 2013 and has held it in 50 quarters since.
William Blair & Company's InterDigital position peaked at $953K in Q2 2025.
572 funds tracked by Wall St. Rank held InterDigital as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.