Two Sigma Investments
IRDM icon

Two Sigma Investments’s Iridium Communications IRDM Stock Holding History

Two Sigma Investments’s Portfolio IRDM Stock Details IRDM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2022
Q1 		– Sell
-16,900
Closed -$698K – 3453
2021
Q4 		$698K Buy
+16,900
New +$683K ﹤0.01% 2906
2020
Q2 		– Sell
-9,300
Closed -$208K – 3219
2020
Q1 		$208K Buy
+9,300
New +$241K ﹤0.01% 2629

Other funds holding IRDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $260M AUM 6.93% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
GAM
Gotham Asset Management New York $32.7B AUM 27.65% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Two Sigma Investments's IRDM Position: Q1 2026 in Review

Two Sigma Investments reduced its Iridium Communications (IRDM) stake by 43% in Q1 2026, selling an estimated $6.71M and leaving 402,428 shares worth $11.2M. The position accounts for 0.01% of the portfolio, ranked #1335.

Two Sigma Investments first reported a position in IRDM in Q4 2013 and has held it in 21 quarters since. The position peaked at $12.9M in Q3 2025. 381 funds tracked by Wall St. Rank hold IRDM as of Q1 2026.

  • Two Sigma Investments held 402,428 shares of Iridium Communications worth $11.2M as of Q1 2026.
  • Two Sigma Investments sold 298,116 Iridium Communications shares in Q1 2026, an estimated $6.71M.
  • Iridium Communications made up 0.01% of Two Sigma Investments's portfolio in Q1 2026, its #1335 holding.
  • Two Sigma Investments first reported a position in Iridium Communications in Q4 2013 and has held it in 21 quarters since.
  • Two Sigma Investments's Iridium Communications position peaked at $12.9M in Q3 2025.
  • 381 funds tracked by Wall St. Rank held Iridium Communications as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.