Citadel Advisors’s Iridium Communications IRDM Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$2.66M Buy
95,900
+45,600
+91% +$1.03M ﹤0.01% 5500
2025
Q4
$874K Buy
50,300
+21,800
+76% +$385K ﹤0.01% 7699
2025
Q3
$498K Sell
28,500
-175,100
-86% -$4.33M ﹤0.01% 9155
2025
Q2
$6.14M Buy
203,600
+108,300
+114% +$2.82M ﹤0.01% 3772
2025
Q1
$2.6M Buy
95,300
+27,000
+40% +$791K ﹤0.01% 5024
2024
Q4
$1.98M Buy
68,300
+27,400
+67% +$815K ﹤0.01% 5650
2024
Q3
$1.25M Buy
40,900
+9,100
+29% +$248K ﹤0.01% 6408
2024
Q2
$847K Sell
31,800
-26,500
-45% -$746K ﹤0.01% 6932
2024
Q1
$1.53M Sell
58,300
-75,100
-56% -$2.44M ﹤0.01% 6056
2023
Q4
$5.49M Buy
133,400
+81,900
+159% +$3.24M ﹤0.01% 3651
2023
Q3
$2.34M Buy
51,500
+600
+1% +$31.1K ﹤0.01% 4931
2023
Q2
$3.16M Sell
50,900
-71,700
-58% -$4.44M ﹤0.01% 4372
2023
Q1
$7.59M Buy
122,600
+89,600
+272% +$5.36M ﹤0.01% 3170
2022
Q4
$1.7M Sell
33,000
-30,400
-48% -$1.53M ﹤0.01% 5786
2022
Q3
$2.81M Sell
63,400
-2,200
-3% -$95.4K ﹤0.01% 4936
2022
Q2
$2.46M Sell
65,600
-30,700
-32% -$1.15M ﹤0.01% 5139
2022
Q1
$3.88M Sell
96,300
-37,100
-28% -$1.4M ﹤0.01% 4671
2021
Q4
$5.51M Sell
133,400
-39,900
-23% -$1.61M ﹤0.01% 4133
2021
Q3
$6.91M Buy
173,300
+54,400
+46% +$2.28M ﹤0.01% 3706
2021
Q2
$4.75M Sell
118,900
-12,700
-10% -$493K ﹤0.01% 4552
2021
Q1
$5.43M Sell
131,600
-43,700
-25% -$1.91M ﹤0.01% 4073
2020
Q4
$6.89M Sell
175,300
-9,800
-5% -$308K ﹤0.01% 3143
2020
Q3
$4.74M Buy
185,100
+31,800
+21% +$875K ﹤0.01% 3249
2020
Q2
$3.9M Sell
153,300
-18,900
-11% -$443K ﹤0.01% 3437
2020
Q1
$3.85M Buy
172,200
+76,700
+80% +$1.99M ﹤0.01% 3090
2019
Q4
$2.35M Sell
95,500
-51,000
-35% -$1.22M ﹤0.01% 4145
2019
Q3
$3.12M Buy
146,500
+57,300
+64% +$1.37M ﹤0.01% 3789
2019
Q2
$2.08M Buy
89,200
+15,600
+21% +$388K ﹤0.01% 4451
2019
Q1
$1.95M Sell
73,600
-48,200
-40% -$1.04M ﹤0.01% 4517
2018
Q4
$2.25M Sell
121,800
-44,600
-27% -$915K ﹤0.01% 3967
2018
Q3
$3.74M Buy
166,400
+45,500
+38% +$884K ﹤0.01% 3382
2018
Q2
$1.95M Buy
120,900
+67,500
+126% +$918K ﹤0.01% 4157
2018
Q1
$601K Buy
53,400
+30,800
+136% +$369K ﹤0.01% 5586
2017
Q4
$267K Sell
22,600
-2,900
-11% -$33.5K ﹤0.01% 6651
2017
Q3
$263K Sell
25,500
-4,200
-14% -$43.5K ﹤0.01% 6267
2017
Q2
$328K Buy
29,700
+19,500
+191% +$204K ﹤0.01% 5759
2017
Q1
$98K Sell
10,200
-14,800
-59% -$141K ﹤0.01% 6870
2016
Q4
$240K Buy
25,000
+5,500
+28% +$49.1K ﹤0.01% 6019
2016
Q3
$158K Sell
19,500
-13,600
-41% -$114K ﹤0.01% 6438
2016
Q2
$294K Buy
33,100
+3,200
+11% +$26.3K ﹤0.01% 5246
2016
Q1
$235K Buy
29,900
+13,300
+80% +$95.6K ﹤0.01% 5413
2015
Q4
$140K Sell
16,600
-3,800
-19% -$28.9K ﹤0.01% 6288
2015
Q3
$125K Sell
20,400
-21,900
-52% -$159K ﹤0.01% 6719
2015
Q2
$385K Buy
42,300
+27,200
+180% +$280K ﹤0.01% 5379
2015
Q1
$147K Buy
15,100
+5,000
+50% +$46.6K ﹤0.01% 6508
2014
Q4
$98K Sell
10,100
-6,600
-40% -$61.7K ﹤0.01% 6652
2014
Q3
$148K Sell
16,700
-5,700
-25% -$49.4K ﹤0.01% 6032
2014
Q2
$190K Buy
22,400
+4,200
+23% +$31.6K ﹤0.01% 5622
2014
Q1
$137K Buy
18,200
+12,600
+225% +$84.3K ﹤0.01% 5887
2013
Q4
$35K Buy
5,600
+2,300
+70% +$13.9K ﹤0.01% 6214
2013
Q3
$23K Sell
3,300
-800
-20% -$5.99K ﹤0.01% 6150
2013
Q2
$32K Buy
+4,100
New +$28.8K ﹤0.01% 5870

Other funds holding IRDM

Citadel Advisors's IRDM Position: Q1 2026 in Review

Citadel Advisors reduced its Iridium Communications (IRDM) stake by 94% in Q1 2026, selling an estimated $24.2M and leaving 63,573 shares worth $1.76M. The position accounts for ﹤0.01% of the portfolio, ranked #6347.

Citadel Advisors first reported a position in IRDM in Q2 2013 and has held it in 44 quarters since. The position peaked at $76.6M in Q1 2023. 379 funds tracked by Wall St. Rank hold IRDM as of Q1 2026.

  • Citadel Advisors held 63,573 shares of Iridium Communications worth $1.76M as of Q1 2026.
  • Citadel Advisors sold 1,076,642 Iridium Communications shares in Q1 2026, an estimated $24.2M.
  • Iridium Communications made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #6347 holding.
  • Citadel Advisors first reported a position in Iridium Communications in Q2 2013 and has held it in 44 quarters since.
  • Citadel Advisors's Iridium Communications position peaked at $76.6M in Q1 2023.
  • 379 funds tracked by Wall St. Rank held Iridium Communications as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.