IRIDIUM COMMUNICATIONS INC IRDM
COM · Common Stock · CUSIP 46269C102 · ISIN US46269C1027
Satellite communications provider
- SectorCommunication
- IndustryCommunications Services, NEC
- HeadquartersMclean, VA
- Founded2001
- Websiteiridium.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($132.3m this quarter). Holder counts are more reliable. Shares outstanding: 106.1m as of 2025-07-17, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $30.17. Options: 12 managers hold calls ($20.4m notional), 13 hold puts ($29.6m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 331 |
| Q4 2022 | 364 |
| Q1 2023 | 372 |
| Q2 2023 | 392 |
| Q3 2023 | 361 |
| Q4 2023 | 347 |
| Q1 2024 | 332 |
| Q2 2024 | 344 |
| Q3 2024 | 353 |
| Q4 2024 | 349 |
| Q1 2025 | 352 |
| Q2 2025 | 334 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 147 | 229 |
| Q4 2023 | 133 | 198 |
| Q1 2024 | 186 | 164 |
| Q2 2024 | 168 | 170 |
| Q3 2024 | 163 | 171 |
| Q4 2024 | 161 | 177 |
| Q1 2025 | 182 | 165 |
| Q2 2025 | 155 | 212 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $13.4m | $7.7m | 0.57 |
| Q4 2024 | $7.8m | $10.8m | 1.38 |
| Q1 2025 | $12.7m | $9.7m | 0.76 |
| Q2 2025 | $20.4m | $29.6m | 1.45 |
Biggest buyers
| CITADEL ADVISORS LLC | Added | +797.5k |
| Synergy Asset Management, LLC | New | +662.2k |
| Silver Heights Capital Management Inc | Added | +501.4k |
| AMERICAN CENTURY COMPANIES INC | Added | +442.3k |
| ARK Investment Management LLC | Added | +441.9k |
| Sumitomo Mitsui Trust Group, Inc. | Added | +422.6k |
| Amova Asset Management Americas, Inc. | Added | +421.3k |
| Man Group plc | Added | +337.5k |
| Penserra Capital Management LLC | Added | +324.4k |
| MORGAN STANLEY | Added | +293.2k |
Biggest sellers
| BlackRock, Inc. | Reduced | -905.8k |
| BAMCO INC /NY/ | Reduced | -893.4k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -617.0k |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | -542.5k |
| Cubist Systematic Strategies, LLC | Sold out | -507.4k |
| Qube Research & Technologies Ltd | Reduced | -382.2k |
| STATE STREET CORP | Reduced | -379.2k |
| NORGES BANK | Reduced | -360.3k |
| Trexquant Investment LP | Reduced | -352.7k |
| RENAISSANCE TECHNOLOGIES LLC | Sold out | -296.7k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $6.1m203.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.2m138.9k shares |
| PEAK6 LLC | Added | $3.9m130.0k shares |
| GROUP ONE TRADING LLC | Added | $2.7m88.8k shares |
| WOLVERINE TRADING, LLC | New | $1.4m48.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $853.0k28.3k shares |
| IMC-Chicago, LLC | New | $509.9k16.9k shares |
| JANE STREET GROUP, LLC | New | $437.5k14.5k shares |
| Caption Management, LLC | Unchanged | $108.6k3.6k shares |
| Walleye Capital LLC | New | $57.3k1.9k shares |
Biggest puts
| Two Creeks Capital Management, LP | New | $15.9m525.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.8m91.3k shares |
| GOLDMAN SACHS GROUP INC | New | $2.2m72.0k shares |
| CITADEL ADVISORS LLC | Added | $2.2m72.0k shares |
| PEAK6 LLC | Reduced | $1.8m58.8k shares |
| BARCLAYS PLC | Unchanged | $1.5m50.0k shares |
| Caption Management, LLC | Unchanged | $1.2m40.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $727.0k24.1k shares |
| Walleye Capital LLC | New | $392.2k13.0k shares |
| WOLVERINE TRADING, LLC | New | $390.5k13.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +2.9 pts · filed 2026-01-08 | 12.5% |
| Baralonco Ltd 13D · may seek influence -0.1 pts · filed 2026-08-04 | 9.4% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-08-13 | 6.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.8% |
Fell to 5% or below in the last year: Silver Heights Capital Management Inc (3.1%, 2026-08-12), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), ARK Investment Management LLC (3.9%, 2025-12-05), BAMCO INC /NY/ (0.7%, 2025-11-14)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 1 | $1.0m | 0 | — | — |
| Q1 2024 | 0 | — | 1 | $107.9k | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 2 | $1.3m | — |
| Q1 2025 | 0 | — | 4 | $1.0m | $358.3k |
| Q2 2025 | 0 | — | 1 | $50.1k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-03 | Kapalka Timothy CAO IRIDIUM SATELLITE LLC | Sold | $50.1k1.9k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 10.6m $320.3m | Reduced -905.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 9.7m $293.8m | Reduced -99.2k |
| BAMCO INC /NY/ 0.69% of their portfolio | 8.4m $252.8m | Reduced -893.4k |
| ARK Investment Management LLC 1.18% of their portfolio | 5.3m $160.9m | Added +441.9k |
| Sumitomo Mitsui Trust Group, Inc. 0.08% of their portfolio | 4.3m $130.2m | Added +422.6k |
| Amova Asset Management Americas, Inc. 1.30% of their portfolio | 4.3m $130.0m | Added +421.3k |
| Silver Heights Capital Management Inc 48.65% of their portfolio | 4.2m $127.6m | Added +501.4k |
| STATE STREET CORP 0.00% of their portfolio | 4.1m $123.0m | Reduced -379.2k |
| Van Berkom & Associates Inc. 2.57% of their portfolio | 2.9m $86.4m | Reduced -22.2k |
| AMERICAN CENTURY COMPANIES INC 0.04% of their portfolio | 2.6m $79.7m | Added +442.3k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.6m $77.1m | Added +39.8k |
| MORGAN STANLEY 0.00% of their portfolio | 2.5m $74.9m | Added +293.2k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.05% of their portfolio | 2.1m $63.0m | Reduced -34.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 2.0m $59.4m | Added +22.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.9m $57.9m | Reduced -101.4k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.6m $49.4m | Reduced -82.9k |
| ArrowMark Colorado Holdings LLC 0.70% of their portfolio | 1.3m $39.1m | Reduced -275.9k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 1.2m $36.6m | Added +797.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.1m $34.4m | Reduced -146.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.0m $31.0m | Reduced -54.3k |
| Select Equity Group, L.P. 0.13% of their portfolio | 1.0m $30.2m | Added +114.2k |
| Pacer Advisors, Inc. 0.08% of their portfolio | 999.3k $30.1m | Reduced -27.4k |
| Gotham Asset Management, LLC 0.17% of their portfolio | 951.2k $28.7m | Added +71.8k |
| FMR LLC 0.00% of their portfolio | 894.3k $27.0m | Added +81.8k |
| ANCHOR CAPITAL MANAGEMENT COMPANY, LLC 22.27% of their portfolio | 890.9k $26.9m | Added +115.0k |
| BARCLAYS PLC 0.01% of their portfolio | 875.7k $26.4m | Reduced -44.3k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 830.9k $25.1m | Reduced -617.0k |
| UBS Group AG 0.00% of their portfolio | 732.1k $22.1m | Added +238.9k |
| VOYA INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 725.1k $21.9m | Reduced -542.5k |
| Invesco Ltd. 0.00% of their portfolio | 708.4k $21.4m | Reduced -10.4k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 703.4k $21.2m | Added +24.9k |
| Synergy Asset Management, LLC 2.29% of their portfolio | 662.2k $20.0m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 652.3k $19.7m | Added +112.8k |
| Man Group plc 0.04% of their portfolio | 616.6k $18.6m | Added +337.5k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 601.2k $18.1m | Reduced -44.4k |
| PINNACLE ASSOCIATES LTD 0.25% of their portfolio | 582.9k $17.6m | Reduced -181.2k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 562.4k $17.0m | Reduced -176.5k |
| NORGES BANK 0.00% of their portfolio | 540.2k $16.3m | Reduced -360.3k |
| BROWN ADVISORY INC 0.02% of their portfolio | 512.9k $15.5m | Added +2.6k |
| Penserra Capital Management LLC 0.18% of their portfolio | 416.6k $12.6m | Added +324.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 377.6k $11.4m | Reduced -170.8k |
| Nuveen, LLC 0.00% of their portfolio | 372.4k $11.2m | Reduced -204.6k |
| JUPITER ASSET MANAGEMENT LTD 0.09% of their portfolio | 355.0k $10.7m | Added +97.3k |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 351.6k $10.6m | Added +112.2k |
| Legal & General Group Plc 0.00% of their portfolio | 345.5k $10.4m | Reduced -75.7k |
| VAN ECK ASSOCIATES CORP 0.01% of their portfolio | 331.9k $10.0m | Added +69.5k |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 314.8k $9.5m | Added +3.3k |
| ACADIAN ASSET MANAGEMENT LLC 0.02% of their portfolio | 300.7k $9.1m | Added +125.9k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 285.8k $8.6m | Reduced -14.2k |
| Crossmark Global Holdings, Inc. 0.14% of their portfolio | 284.4k $8.6m | Added +59.6k |
| Retirement Systems of Alabama 0.03% of their portfolio | 283.6k $8.6m | Reduced -274 |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 283.6k $8.6m | Added +33.7k |
| Robertson Opportunity Capital, LLC 3.17% of their portfolio | 283.3k $8.5m | Added +95.1k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 250.4k $7.6m | Added +202.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 244.9k $7.4m | Reduced -6.1k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 206.5k $6.2m | Reduced -204.0k |
| HRT FINANCIAL LP 0.03% of their portfolio | 202.9k $6.1m | Added +50.3k |
| Public Sector Pension Investment Board 0.03% of their portfolio | 202.5k $6.1m | New |
| BLAIR WILLIAM & CO/IL 0.02% of their portfolio | 199.6k $6.0m | Reduced -4.3k |
| California Public Employees Retirement System 0.00% of their portfolio | 195.0k $5.9m | Added +1.9k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 189.1k $5.7m | Added +33.8k |
| Swiss National Bank 0.00% of their portfolio | 186.9k $5.6m | Reduced -11.6k |
| LBP AM SA 0.08% of their portfolio | 182.1k $5.5m | Added +32.8k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 172.1k $5.2m | Added +1.1k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 171.6k $5.2m | Added +110.2k |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.45% of their portfolio | 168.8k $5.1m | Added +87.5k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.03% of their portfolio | 165.4k $5.0m | Reduced -17.4k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 151.4k $4.6m | Added +26.0k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 144.5k $4.4m | Reduced -38.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 140.5k $4.2m | Reduced -180.1k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 136.3k $4.1m | Reduced -54.5k |
| Aquatic Capital Management LLC 0.08% of their portfolio | 133.4k $4.0m | Added +17.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 128.5k $3.9m | Reduced -24.9k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 125.1k $3.8m | Reduced -107.2k |
| AGF MANAGEMENT LTD 0.02% of their portfolio | 116.2k $3.5m | Added +30.1k |
| Graphene Investments SAS 2.27% of their portfolio | 115.3k $3.5m | New |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 114.4k $3.5m | Reduced -700 |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 114.1k $3.5m | Added +80.2k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 113.9k $3.4m | Reduced -52 |
| Private Advisor Group, LLC 0.02% of their portfolio | 110.0k $3.3m | Reduced -9.9k |
| CAPITAL FUND MANAGEMENT S.A. 0.03% of their portfolio | 97.8k $3.0m | Reduced -26.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 97.8k $3.0m | Reduced -904 |
| Paralel Advisors LLC 0.12% of their portfolio | 97.8k $3.0m | Added +1.8k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 95.2k $2.9m | Reduced -90.5k |
| ArchPoint Investors 0.83% of their portfolio | 93.6k $2.8m | New |
| Verition Fund Management LLC 0.02% of their portfolio | 91.8k $2.8m | Reduced -46.1k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 87.0k $2.6m | Reduced -770 |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 83.6k $2.5m | Reduced -46.8k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 80.4k $2.4m | Reduced -2.5k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 78.8k $2.4m | Reduced -4.7k |
| State of New Jersey Common Pension Fund D 0.01% of their portfolio | 73.8k $2.2m | Added +12.2k |
| Skylands Capital, LLC 0.32% of their portfolio | 73.4k $2.2m | Reduced -300 |
| CITIGROUP INC 0.00% of their portfolio | 73.3k $2.2m | Added +35.6k |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 70.8k $2.1m | Reduced -18.2k |
| INTECH INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 66.9k $2.0m | Added +473 |
| DARK FOREST CAPITAL MANAGEMENT LP 0.08% of their portfolio | 64.3k $1.9m | Reduced -26 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 63.2k $1.9m | Added +37.8k |
| Holocene Advisors, LP 0.00% of their portfolio | 60.3k $1.8m | Reduced -9.3k |
| LPL Financial LLC 0.00% of their portfolio | 58.7k $1.8m | Added +10.9k |
| NFJ INVESTMENT GROUP, LLC 0.06% of their portfolio | 58.6k $1.8m | Reduced -365 |