Dimensional Fund 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 | $59.9M | Buy |
2,159,061
+65,937
| +3% | +$1.48M | 0.01% | 1407 |
|
|
2025
Q4 | $36.4M | Sell |
2,093,124
-234,271
| -10% | -$4.14M | 0.01% | 1676 |
|
|
2025
Q3 | $40.6M | Sell |
2,327,395
-228,878
| -9% | -$5.66M | 0.01% | 1632 |
|
|
2025
Q2 | $77.1M | Buy |
2,556,273
+39,804
| +2% | +$1.04M | 0.02% | 1217 |
|
|
2025
Q1 | $68.7M | Buy |
2,516,469
+454,403
| +22% | +$13.3M | 0.02% | 1267 |
|
|
2024
Q4 | $59.8M | Buy |
2,062,066
+149,606
| +8% | +$4.45M | 0.01% | 1412 |
|
|
2024
Q3 | $58.2M | Sell |
1,912,460
-18,158
| -0.9% | -$495K | 0.01% | 1420 |
|
|
2024
Q2 | $51.4M | Sell |
1,930,618
-1,199
| -0.1% | -$33.8K | 0.01% | 1449 |
|
|
2024
Q1 | $50.5M | Buy |
1,931,817
+4,708
| +0.2% | +$153K | 0.01% | 1448 |
|
|
2023
Q4 | $79.3M | Sell |
1,927,109
-58,794
| -3% | -$2.33M | 0.02% | 1098 |
|
|
2023
Q3 | $90.3M | Sell |
1,985,903
-66,210
| -3% | -$3.43M | 0.03% | 882 |
|
|
2023
Q2 | $127M | Sell |
2,052,113
-50,217
| -2% | -$3.11M | 0.04% | 627 |
|
|
2023
Q1 | $130M | Sell |
2,102,330
-336,274
| -14% | -$20.1M | 0.04% | 588 |
|
|
2022
Q4 | $125K | Sell |
2,438,604
-29,403
| -1% | -$1.48M | 0.04% | 608 |
|
|
2022
Q3 | $110M | Buy |
2,468,007
+4,154
| +0.2% | +$180K | 0.04% | 627 |
|
|
2022
Q2 | $92.5M | Sell |
2,463,853
-96,147
| -4% | -$3.59M | 0.03% | 791 |
|
|
2022
Q1 | $103M | Buy |
2,560,000
+15,677
| +0.6% | +$590K | 0.03% | 830 |
|
|
2021
Q4 | $105M | Sell |
2,544,323
-184,699
| -7% | -$7.46M | 0.03% | 847 |
|
|
2021
Q3 | $109M | Sell |
2,729,022
-608,309
| -18% | -$25.5M | 0.04% | 760 |
|
|
2021
Q2 | $133M | Sell |
3,337,331
-793,092
| -19% | -$30.8M | 0.04% | 603 |
|
|
2021
Q1 | $170M | Sell |
4,130,423
-775,352
| -16% | -$33.9M | 0.06% | 425 |
|
|
2020
Q4 | $193M | Sell |
4,905,775
-247,578
| -5% | -$7.78M | 0.07% | 297 |
|
|
2020
Q3 | $132M | Sell |
5,153,353
-104,863
| -2% | -$2.89M | 0.06% | 390 |
|
|
2020
Q2 | $134M | Sell |
5,258,216
-222,710
| -4% | -$5.22M | 0.06% | 356 |
|
|
2020
Q1 | $122M | Sell |
5,480,926
-93,354
| -2% | -$2.42M | 0.06% | 289 |
|
|
2019
Q4 | $137M | Sell |
5,574,280
-62,320
| -1% | -$1.49M | 0.05% | 483 |
|
|
2019
Q3 | $120M | Sell |
5,636,600
-156,534
| -3% | -$3.73M | 0.05% | 532 |
|
|
2019
Q2 | $135M | Sell |
5,793,134
-74,079
| -1% | -$1.84M | 0.05% | 455 |
|
|
2019
Q1 | $155M | Buy |
5,867,213
+18,080
| +0.3% | +$389K | 0.06% | 334 |
|
|
2018
Q4 | $108M | Buy |
5,849,133
+517,624
| +10% | +$10.6M | 0.05% | 488 |
|
|
2018
Q3 | $120M | Buy |
5,331,509
+806,061
| +18% | +$15.7M | 0.05% | 556 |
|
|
2018
Q2 | $72.9M | Buy |
4,525,448
+594,513
| +15% | +$8.09M | 0.03% | 961 |
|
|
2018
Q1 | $44.2M | Sell |
3,930,935
-36,169
| -0.9% | -$433K | 0.02% | 1470 |
|
|
2017
Q4 | $46.8M | Sell |
3,967,104
-33,272
| -0.8% | -$385K | 0.02% | 1421 |
|
|
2017
Q3 | $41.2M | Sell |
4,000,376
-41,603
| -1% | -$431K | 0.02% | 1508 |
|
|
2017
Q2 | $44.7M | Sell |
4,041,979
-24,545
| -0.6% | -$256K | 0.02% | 1371 |
|
|
2017
Q1 | $39.2M | Sell |
4,066,524
-5,092
| -0.1% | -$48.6K | 0.02% | 1450 |
|
|
2016
Q4 | $39.1M | Sell |
4,071,616
-183
| -0% | -$1.63K | 0.02% | 1404 |
|
|
2016
Q3 | $33M | Sell |
4,071,799
-6,500
| -0.2% | -$54.5K | 0.02% | 1482 |
|
|
2016
Q2 | $36.2M | Sell |
4,078,299
-7,316
| -0.2% | -$60.1K | 0.02% | 1312 |
|
|
2016
Q1 | $32.2M | Sell |
4,085,615
-250
| -0% | -$1.8K | 0.02% | 1390 |
|
|
2015
Q4 | $34.4M | Buy |
4,085,865
+1,500
| +0% | +$11.4K | 0.02% | 1254 |
|
|
2015
Q3 | $25.1M | Sell |
4,084,365
-1,200
| -0% | -$8.71K | 0.02% | 1514 |
|
|
2015
Q2 | $37.1M | Buy |
4,085,565
+44,693
| +1% | +$460K | 0.02% | 1195 |
|
|
2015
Q1 | $39.2M | Sell |
4,040,872
-21,860
| -0.5% | -$204K | 0.02% | 1086 |
|
|
2014
Q4 | $39.6M | Buy |
4,062,732
+21,503
| +0.5% | +$201K | 0.03% | 1003 |
|
|
2014
Q3 | $35.8M | Sell |
4,041,229
-3,108
| -0.1% | -$26.9K | 0.03% | 992 |
|
|
2014
Q2 | $34.2M | Buy |
4,044,337
+4,956
| +0.1% | +$37.3K | 0.02% | 1062 |
|
|
2014
Q1 | $30.3M | Buy |
4,039,381
+310,411
| +8% | +$2.08M | 0.02% | 1111 |
|
|
2013
Q4 | $23.3M | Buy |
3,728,970
+33,110
| +0.9% | +$200K | 0.02% | 1371 |
|
|
2013
Q3 | $25.4M | Buy |
3,695,860
+1,049
| +0% | +$7.85K | 0.02% | 1125 |
|
|
2013
Q2 | $28.7M | Buy |
+3,694,811
| New | +$26M | 0.03% | 889 |
|
Other funds holding IRDM
VPM
SHCM
VCM
GAM
Dimensional Fund Advisors's IRDM Position: Q1 2026 in Review
Dimensional Fund Advisors increased its Iridium Communications (IRDM) stake by 3.2% in Q1 2026, buying an estimated $1.48M and bringing the position to 2,159,061 shares worth $59.9M. The position accounts for 0.01% of the portfolio, ranked #1407.
Dimensional Fund Advisors first reported a position in IRDM in Q2 2013 and has held it in 52 quarters since. The position peaked at $193M in Q4 2020. 379 funds tracked by Wall St. Rank hold IRDM as of Q1 2026.
- Dimensional Fund Advisors held 2,159,061 shares of Iridium Communications worth $59.9M as of Q1 2026.
- Dimensional Fund Advisors bought 65,937 Iridium Communications shares in Q1 2026, an estimated $1.48M.
- Iridium Communications made up 0.01% of Dimensional Fund Advisors's portfolio in Q1 2026, its #1407 holding.
- Dimensional Fund Advisors first reported a position in Iridium Communications in Q2 2013 and has held it in 52 quarters since.
- Dimensional Fund Advisors's Iridium Communications position peaked at $193M in Q4 2020.
- 379 funds tracked by Wall St. Rank held Iridium Communications as of Q1 2026.
Based on Dimensional Fund Advisors's 13F filing for Q1 2026, filed 7 May 2026.