SRFM
IDCC icon

Shannon River Fund Management’s InterDigital IDCC Stock Holding History

Shannon River Fund Management’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
2024
Q1 		– Sell
-472,800
Closed -$51.3M – 23
2023
Q4 		$51.3M Buy
+472,800
New +$43.8M 9.38% 3

Other funds holding IDCC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

Shannon River Fund Management's IDCC Position: Q2 2026 in Review

Shannon River Fund Management increased its InterDigital (IDCC) stake by 241% in Q2 2026, buying an estimated $38.7M and bringing the position to 184,388 shares worth $52.2M. The position accounts for 4.66% of the portfolio, ranked #4.

Shannon River Fund Management first reported a position in IDCC in Q2 2013 and has held it in 41 quarters since. The position peaked at $76.1M in Q1 2021. 511 funds tracked by Wall St. Rank hold IDCC as of Q2 2026.

  • Shannon River Fund Management held 184,388 shares of InterDigital worth $52.2M as of Q2 2026.
  • Shannon River Fund Management bought 130,284 InterDigital shares in Q2 2026, an estimated $38.7M.
  • InterDigital made up 4.66% of Shannon River Fund Management's portfolio in Q2 2026, its #4 holding.
  • Shannon River Fund Management first reported a position in InterDigital in Q2 2013 and has held it in 41 quarters since.
  • Shannon River Fund Management's InterDigital position peaked at $76.1M in Q1 2021.
  • 511 funds tracked by Wall St. Rank held InterDigital as of Q2 2026.

Based on Shannon River Fund Management's 13F filing for Q2 2026, filed 13 Aug 2026.