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
$2.41M Sell
86,700
-126,200
-59% -$2.84M ﹤0.01% 5700
2025
Q4
$3.7M Buy
212,900
+56,200
+36% +$993K ﹤0.01% 4796
2025
Q3
$2.74M Buy
156,700
+84,700
+118% +$2.09M ﹤0.01% 5472
2025
Q2
$2.17M Buy
72,000
+19,000
+36% +$494K ﹤0.01% 5554
2025
Q1
$1.45M Sell
53,000
-40,300
-43% -$1.18M ﹤0.01% 6160
2024
Q4
$2.71M Sell
93,300
-100
-0.1% -$2.97K ﹤0.01% 5014
2024
Q3
$2.84M Buy
93,400
+26,100
+39% +$711K ﹤0.01% 4877
2024
Q2
$1.79M Buy
67,300
+37,100
+123% +$1.04M ﹤0.01% 5527
2024
Q1
$790K Sell
30,200
-16,600
-35% -$540K ﹤0.01% 7422
2023
Q4
$1.93M Sell
46,800
-20,100
-30% -$796K ﹤0.01% 5425
2023
Q3
$3.04M Sell
66,900
-15,100
-18% -$782K ﹤0.01% 4459
2023
Q2
$5.09M Buy
82,000
+6,500
+9% +$402K ﹤0.01% 3612
2023
Q1
$4.68M Buy
75,500
+16,600
+28% +$994K ﹤0.01% 3932
2022
Q4
$3.03M Buy
58,900
+38,300
+186% +$1.92M ﹤0.01% 4734
2022
Q3
$914K Hold
20,600
﹤0.01% 7192
2022
Q2
$774K Sell
20,600
-22,700
-52% -$847K ﹤0.01% 7614
2022
Q1
$1.75M Buy
43,300
+9,900
+30% +$373K ﹤0.01% 6388
2021
Q4
$1.38M Sell
33,400
-3,500
-9% -$141K ﹤0.01% 7082
2021
Q3
$1.47M Sell
36,900
-6,600
-15% -$277K ﹤0.01% 7126
2021
Q2
$1.74M Sell
43,500
-34,900
-45% -$1.36M ﹤0.01% 6935
2021
Q1
$3.23M Buy
78,400
+12,200
+18% +$534K ﹤0.01% 5257
2020
Q4
$2.6M Sell
66,200
-8,700
-12% -$273K ﹤0.01% 4819
2020
Q3
$1.92M Sell
74,900
-400
-0.5% -$11K ﹤0.01% 4794
2020
Q2
$1.92M Buy
75,300
+900
+1% +$21.1K ﹤0.01% 4659
2020
Q1
$1.66M Sell
74,400
-45,200
-38% -$1.17M ﹤0.01% 4447
2019
Q4
$2.95M Sell
119,600
-36,700
-23% -$879K ﹤0.01% 3812
2019
Q3
$3.33M Buy
156,300
+3,900
+3% +$92.9K ﹤0.01% 3690
2019
Q2
$3.54M Sell
152,400
-398,400
-72% -$9.92M ﹤0.01% 3600
2019
Q1
$14.6M Sell
550,800
-437,200
-44% -$9.41M 0.01% 1635
2018
Q4
$18.2M Buy
988,000
+11,200
+1% +$230K 0.01% 1305
2018
Q3
$22M Buy
976,800
+894,000
+1,080% +$17.4M 0.01% 1314
2018
Q2
$1.33M Buy
82,800
+42,200
+104% +$574K ﹤0.01% 4741
2018
Q1
$457K Buy
40,600
+400
+1% +$4.79K ﹤0.01% 6031
2017
Q4
$474K Buy
+40,200
New +$465K ﹤0.01% 5736
2017
Q3
Sell
-13,300
Closed -$147K 7757
2017
Q2
$147K Sell
13,300
-22,000
-62% -$230K ﹤0.01% 6756
2017
Q1
$341K Buy
35,300
+25,200
+250% +$240K ﹤0.01% 5685
2016
Q4
$97K Sell
10,100
-25,600
-72% -$228K ﹤0.01% 6687
2016
Q3
$290K Buy
+35,700
New +$299K ﹤0.01% 5718
2016
Q1
Sell
-600
Closed -$5K 7343
2015
Q4
$5K Sell
600
-1,300
-68% -$9.9K ﹤0.01% 8452
2015
Q3
$12K Buy
1,900
+800
+73% +$5.81K ﹤0.01% 8403
2015
Q2
$10K Sell
1,100
-2,800
-72% -$28.8K ﹤0.01% 8401
2015
Q1
$38K Sell
3,900
-100
-3% -$932 ﹤0.01% 7561
2014
Q4
$39K Buy
4,000
+2,300
+135% +$21.5K ﹤0.01% 7381
2014
Q3
$15K Sell
1,700
-3,400
-67% -$29.5K ﹤0.01% 7613
2014
Q2
$43K Sell
5,100
-8,500
-63% -$63.9K ﹤0.01% 6854
2014
Q1
$102K Sell
13,600
-16,300
-55% -$109K ﹤0.01% 6183
2013
Q4
$187K Buy
29,900
+9,000
+43% +$54.4K ﹤0.01% 5092
2013
Q3
$144K Buy
20,900
+9,300
+80% +$69.6K ﹤0.01% 5050
2013
Q2
$90K Buy
+11,600
New +$81.5K ﹤0.01% 5300

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.