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Two Sigma Securities’s Iridium Communications IRDM Stock Holding History

Two Sigma Securities’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
Q2 		– Sell
-7,400
Closed -$298K – 2532
2022
Q1 		$298K Buy
+7,400
New +$279K 0.01% 1406

Other funds holding IRDM

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AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $324M AUM 55.4% 1-Year Est. Return
GAM
Gotham Asset Management New York $43B AUM 34.97% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return

Two Sigma Securities's IRDM Position: Q2 2026 in Review

Two Sigma Securities opened a new position in Iridium Communications (IRDM) in Q2 2026: 12,417 shares worth $681K. The stake represents 0.06% of the portfolio and ranks #441 among its holdings. This is a return to the name: Two Sigma Securities previously reported a position in IRDM as recently as Q3 2025.

Two Sigma Securities first reported a position in IRDM in Q4 2016 and has held it in 7 quarters since. The position peaked at $765K in Q3 2018. 483 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

  • Two Sigma Securities held 12,417 shares of Iridium Communications worth $681K as of Q2 2026.
  • Iridium Communications was a new Two Sigma Securities position in Q2 2026.
  • Iridium Communications made up 0.06% of Two Sigma Securities's portfolio in Q2 2026, its #441 holding.
  • Two Sigma Securities first reported a position in Iridium Communications in Q4 2016 and has held it in 7 quarters since.
  • Two Sigma Securities's Iridium Communications position peaked at $765K in Q3 2018.
  • 483 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on Two Sigma Securities's 13F filing for Q2 2026, filed 14 Aug 2026.