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Cubist Systematic Strategies’s Iridium Communications IRDM Stock Holding History

Cubist Systematic Strategies’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
2025
Q2 		– Sell
-507,355
Closed -$13.9M – 3245
2025
Q1 		$13.9M Buy
507,355
+402,759
+385% +$11.8M 0.08% 337
2024
Q4 		$3.04M Sell
104,596
-107,460
-51% -$3.2M 0.02% 1113
2024
Q3 		$6.46M Buy
212,056
+68,359
+48% +$1.86M 0.04% 688
2024
Q2 		$3.83M Sell
143,697
-113,764
-44% -$3.2M 0.03% 937
2024
Q1 		$6.74M Buy
257,461
+112,060
+77% +$3.64M 0.04% 769
2023
Q4 		$5.98M Buy
145,401
+77,041
+113% +$3.05M 0.04% 757
2023
Q3 		$3.11M Sell
68,360
-149,406
-69% -$7.74M 0.02% 1059
2023
Q2 		$13.5M Buy
217,766
+151,249
+227% +$9.36M 0.09% 284
2023
Q1 		$4.12M Buy
66,517
+54,099
+436% +$3.24M 0.03% 1085
2022
Q4 		$638K Sell
12,418
-87,742
-88% -$4.4M ﹤0.01% 2845
2022
Q3 		$4.44M Sell
100,160
-45,001
-31% -$1.95M 0.03% 1194
2022
Q2 		$5.45M Sell
145,161
-78,569
-35% -$2.93M 0.03% 908
2022
Q1 		$9.02M Buy
223,730
+181,500
+430% +$6.83M 0.08% 350
2021
Q4 		$1.74M Sell
42,230
-6,724
-14% -$272K 0.02% 1488
2021
Q3 		$1.95M Buy
+48,954
New +$2.05M 0.02% 1038
2021
Q2 		– Sell
-6,214
Closed -$256K – 2993
2021
Q1 		$256K Buy
+6,214
New +$272K ﹤0.01% 2344
2020
Q4 		– Sell
-15,890
Closed -$406K – 2625
2020
Q3 		$406K Sell
15,890
-5,454
-26% -$150K 0.01% 1860
2020
Q2 		$543K Buy
+21,344
New +$500K 0.01% 1545
2020
Q1 		– Sell
-6,700
Closed -$165K – 2289
2019
Q4 		$165K Sell
6,700
-11,285
-63% -$270K ﹤0.01% 2084
2019
Q3 		$383K Buy
17,985
+1,572
+10% +$37.5K 0.01% 1424
2019
Q2 		$382K Buy
+16,413
New +$409K 0.01% 1650
2019
Q1 		– Sell
-78,091
Closed -$1.44M – 2322
2018
Q4 		$1.44M Buy
+78,091
New +$1.6M 0.07% 411
2015
Q3 		– Sell
-45,460
Closed -$413K – 1925
2015
Q2 		$413K Buy
+45,460
New +$467K 0.02% 1050

Other funds holding IRDM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $260M AUM 6.93% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VBA
Van Berkom & Associates Montreal, Quebec, Canada $3.08B AUM 12.07% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Cubist Systematic Strategies's IRDM Position: Q2 2025 in Review

Cubist Systematic Strategies sold out of Iridium Communications (IRDM) in Q2 2025, closing a stake of 507,355 shares — an estimated $13.9M sold.

Cubist Systematic Strategies first reported a position in IRDM in Q2 2015 and held it in 23 quarters. The position peaked at $13.9M in Q1 2025. 331 funds tracked by Wall St. Rank hold IRDM as of Q2 2025.

  • Cubist Systematic Strategies reported no remaining Iridium Communications position as of Q2 2025 after selling out during the quarter.
  • Cubist Systematic Strategies sold 507,355 Iridium Communications shares in Q2 2025, an estimated $13.9M.
  • Cubist Systematic Strategies first reported a position in Iridium Communications in Q2 2015 and held it in 23 quarters.
  • Cubist Systematic Strategies's Iridium Communications position peaked at $13.9M in Q1 2025.
  • 331 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2025.

Based on Cubist Systematic Strategies's 13F filing for Q2 2025, filed 14 Aug 2025.