Renaissance Technologies (RenTech)'s IRDM Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 128,100 shares of Iridium Communications Inc. (IRDM) worth $3.55 M, representing 0.01% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 47 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in IRDM, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2018, adding 794,399 shares. Largest reduction occurred in Q1 2020, reducing 519,300 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Iridium Communications (IRDM) Holding Value Over Time
Track share changes against reported price movement
Quarterly Iridium Communications (IRDM) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +128,100 | New Buy | 128,100 | $27.74 |
| Q2 2025 | -296,699 | Sold Out | 0 | $0.00 |
| Q1 2025 | +280,669 | Add 1750.90% | 296,699 | $27.32 |
| Q4 2024 | -106,269 | Reduce 86.89% | 16,030 | $29.02 |
| Q3 2024 | -96,401 | Reduce 44.08% | 122,299 | $30.45 |
| Q2 2024 | -357,999 | Reduce 62.08% | 218,700 | $26.62 |
| Q1 2024 | +12,900 | Add 2.29% | 576,699 | $26.16 |
| Q4 2023 | +145,000 | Add 34.62% | 563,799 | $41.16 |
| Q3 2023 | -20,100 | Reduce 4.58% | 418,799 | $45.49 |
| Q2 2023 | -173,400 | Reduce 28.32% | 438,899 | $0.06 |
| Q1 2023 | +162,539 | Add 36.14% | 612,299 | $0.06 |
| Q4 2022 | +62,461 | Add 16.13% | 449,760 | $0.05 |
| Q3 2022 | +67,400 | Add 21.07% | 387,299 | $44.37 |
| Q2 2022 | -368,800 | Reduce 53.55% | 319,899 | $37.56 |
| Q1 2022 | +438,000 | Add 174.71% | 688,699 | $40.32 |
| Q4 2021 | +168,900 | Add 206.48% | 250,699 | $41.29 |
| Q3 2021 | +81,799 | New Buy | 81,799 | $39.85 |
| Q1 2021 | -48,789 | Sold Out | 0 | $0.00 |
| Q4 2020 | -313,711 | Reduce 86.54% | 48,789 | $39.33 |
| Q3 2020 | -477,700 | Reduce 56.86% | 362,500 | $25.58 |
| Q2 2020 | -295,500 | Reduce 26.02% | 840,200 | $25.44 |
| Q1 2020 | -519,300 | Reduce 31.38% | 1.14 M | $22.33 |
| Q4 2019 | -353,100 | Reduce 17.58% | 1.66 M | $24.64 |
| Q3 2019 | -518,899 | Reduce 20.53% | 2.01 M | $21.28 |
| Q2 2019 | -337,500 | Reduce 11.78% | 2.53 M | $23.26 |
| Q1 2019 | +330,200 | Add 13.03% | 2.86 M | $26.44 |
| Q4 2018 | +794,399 | Add 45.66% | 2.53 M | $18.45 |
| Q3 2018 | +701,300 | Add 67.52% | 1.74 M | $22.50 |
| Q2 2018 | +677,100 | Add 187.30% | 1.04 M | $16.10 |
| Q1 2018 | +113,701 | Add 45.88% | 361,500 | $11.25 |
| Q4 2017 | +33,100 | Add 15.42% | 247,799 | $11.80 |
| Q3 2017 | +111,600 | Add 108.25% | 214,699 | $10.30 |
| Q2 2017 | +103,099 | New Buy | 103,099 | $11.05 |
| Q4 2016 | -156,600 | Sold Out | 0 | $0.00 |
| Q3 2016 | +93,900 | Add 149.76% | 156,600 | $8.11 |
| Q2 2016 | +62,700 | New Buy | 62,700 | $8.88 |
| Q4 2015 | -178,399 | Sold Out | 0 | $0.00 |
| Q3 2015 | +178,399 | New Buy | 178,399 | $6.15 |
| Q2 2015 | -68,100 | Sold Out | 0 | $0.00 |
| Q1 2015 | -132,699 | Reduce 66.09% | 68,100 | $9.71 |
| Q4 2014 | -47,900 | Reduce 19.26% | 200,799 | $9.75 |
| Q3 2014 | +131,000 | Add 111.30% | 248,699 | $8.85 |
| Q2 2014 | +117,699 | New Buy | 117,699 | $8.46 |
| Q1 2014 | -72,649 | Sold Out | 0 | $0.00 |
| Q4 2013 | +72,649 | New Buy | 72,649 | $6.25 |
| Q3 2013 | -118,249 | Sold Out | 0 | $0.00 |
| Q2 2013 | +118,249 | Add 0.00% | 118,249 | $7.76 |
Renaissance Technologies (RenTech)'s Iridium Communications Investment FAQs
Renaissance Technologies (RenTech) first purchased Iridium Communications Inc. (IRDM) in Q2 2013, acquiring 118,249 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Iridium Communications Inc. (IRDM) for 47 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to Iridium Communications Inc. (IRDM) was in Q4 2018, adding 2,534,299 shares worth $46.76 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 128,100 shares of Iridium Communications Inc. (IRDM), valued at approximately $3.55 M.
As of the Q1 2026 filing, Iridium Communications Inc. (IRDM) represents approximately 0.01% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Iridium Communications Inc. (IRDM) was 2,864,499 shares, as reported at the end of Q1 2019.