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 ($113.8m this quarter). Holder counts are more reliable. Shares outstanding: 108.2m as of 2025-04-15, 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 ≈ $27.32. Options: 8 managers hold calls ($12.7m notional), 9 hold puts ($9.7m).
Trends to Q1 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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 191 | 166 |
| 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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $39.1m | $11.9m | 0.30 |
| Q3 2024 | $13.4m | $7.7m | 0.57 |
| Q4 2024 | $7.8m | $10.8m | 1.38 |
| Q1 2025 | $12.7m | $9.7m | 0.76 |
Biggest buyers
| ARK Investment Management LLC | Added | +2.4m |
| Sumitomo Mitsui Trust Group, Inc. | Added | +1.1m |
| Amova Asset Management Americas, Inc. | Added | +1.1m |
| VOYA INVESTMENT MANAGEMENT LLC | Added | +837.3k |
| MILLENNIUM MANAGEMENT LLC | Added | +653.2k |
| AMERICAN CENTURY COMPANIES INC | Added | +462.5k |
| DIMENSIONAL FUND ADVISORS LP | Added | +454.4k |
| BANK OF AMERICA CORP /DE/ | Added | +434.5k |
| Cubist Systematic Strategies, LLC | Added | +402.8k |
| MORGAN STANLEY | Added | +304.5k |
Biggest sellers
| VICTORY CAPITAL MANAGEMENT INC | Reduced | -1.6m |
| BAMCO INC /NY/ | Reduced | -1.5m |
| BlackRock, Inc. | Reduced | -1.2m |
| VANGUARD GROUP INC | Reduced | -973.9k |
| AQR CAPITAL MANAGEMENT LLC | Reduced | -530.3k |
| ArrowMark Colorado Holdings LLC | Reduced | -515.7k |
| Van Berkom & Associates Inc. | Reduced | -286.6k |
| D. E. Shaw & Co., Inc. | Reduced | -250.8k |
| Balyasny Asset Management L.P. | Sold out | -206.8k |
| WINTON GROUP Ltd | Sold out | -160.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.8m138.8k shares |
| PEAK6 LLC | New | $3.1m111.9k shares |
| CITADEL ADVISORS LLC | Added | $2.6m95.3k shares |
| SIMPLEX TRADING, LLC | Added | $1.6m57.6k shares |
| GROUP ONE TRADING LLC | Added | $898.8k32.9k shares |
| Walleye Trading LLC | Added | $663.9k24.3k shares |
| Caption Management, LLC | Reduced | $98.4k3.6k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| PEAK6 LLC | New | $2.7m100.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.0m73.1k shares |
| CITADEL ADVISORS LLC | Reduced | $1.4m53.0k shares |
| BARCLAYS PLC | Unchanged | $1.4m50.0k shares |
| Caption Management, LLC | Unchanged | $1.1m40.0k shares |
| SIMPLEX TRADING, LLC | Added | $808.0k29.6k shares |
| GROUP ONE TRADING LLC | Reduced | $248.6k9.1k shares |
| Walleye Trading LLC | Reduced | $2.7k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 Q1 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 |
|---|---|---|---|---|---|
| Q2 2023 | 0 | — | 2 | $5.9m | — |
| 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 |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-02-18 | Morgan Kathleen A. CHIEF LEGAL OFFICER | Sold | $503.9k15.0k shares |
| 2025-02-18 | Olson Eric T Director | Sold | $168.6k5.0k shares |
| 2025-01-10 | FITZPATRICK THOMAS Director | Sold plan | $356.6k12.5k shares |
| 2025-01-02 | Last Timothy James EVP, Sales & Marketing | Sold plan | $1.7k57 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, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 11.5m $314.8m | Reduced -1.2m |
| VANGUARD GROUP INC 0.00% of their portfolio | 9.8m $268.8m | Reduced -973.9k |
| BAMCO INC /NY/ 0.74% of their portfolio | 9.3m $253.3m | Reduced -1.5m |
| ARK Investment Management LLC 1.34% of their portfolio | 4.9m $133.6m | Added +2.4m |
| STATE STREET CORP 0.01% of their portfolio | 4.5m $121.7m | Added +72.2k |
| Sumitomo Mitsui Trust Group, Inc. 0.08% of their portfolio | 3.9m $106.4m | Added +1.1m |
| Amova Asset Management Americas, Inc. 1.37% of their portfolio | 3.9m $106.2m | Added +1.1m |
| Silver Heights Capital Management Inc 46.26% of their portfolio | 3.7m $101.8m | Added +11.4k |
| Van Berkom & Associates Inc. 2.53% of their portfolio | 2.9m $78.8m | Reduced -286.6k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.5m $68.7m | Added +454.4k |
| AMERICAN CENTURY COMPANIES INC 0.04% of their portfolio | 2.2m $60.1m | Added +462.5k |
| MORGAN STANLEY 0.00% of their portfolio | 2.2m $59.8m | Added +304.5k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.06% of their portfolio | 2.1m $58.4m | Reduced -92.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.0m $55.2m | Added +13.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 1.9m $53.2m | Added +234.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.7m $47.0m | Reduced -107.7k |
| ArrowMark Colorado Holdings LLC 0.70% of their portfolio | 1.6m $43.0m | Reduced -515.7k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 1.4m $39.6m | Added +653.2k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.3m $35.2m | Reduced -9.9k |
| VOYA INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 1.3m $34.6m | Added +837.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.1m $29.6m | Reduced -10.9k |
| Pacer Advisors, Inc. 0.07% of their portfolio | 1.0m $28.0m | Added +285.1k |
| BARCLAYS PLC 0.01% of their portfolio | 920.0k $25.1m | Reduced -68.8k |
| NORGES BANK 0.00% of their portfolio | 900.5k $24.6m | Reduced -72.6k |
| Select Equity Group, L.P. 0.11% of their portfolio | 887.2k $24.2m | Added +136.0k |
| Gotham Asset Management, LLC 0.20% of their portfolio | 879.4k $24.0m | Added +176.0k |
| FMR LLC 0.00% of their portfolio | 812.5k $22.2m | Reduced -29.8k |
| ANCHOR CAPITAL MANAGEMENT COMPANY, LLC 21.20% of their portfolio | 775.9k $21.2m | Added +56.0k |
| PINNACLE ASSOCIATES LTD 0.31% of their portfolio | 764.1k $20.9m | Reduced -31.2k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 738.8k $20.2m | Added +107.0k |
| Invesco Ltd. 0.00% of their portfolio | 718.8k $19.6m | Added +59.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 678.5k $18.5m | Added +434.5k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 645.6k $17.6m | Added +38.7k |
| Nuveen, LLC 0.00% of their portfolio | 577.0k $15.8m | First filing |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 548.4k $15.0m | Added +117.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 539.6k $14.7m | Added +75.1k |
| BROWN ADVISORY INC 0.02% of their portfolio | 510.3k $13.9m | Reduced -684 |
| Cubist Systematic Strategies, LLC 0.18% of their portfolio | 507.4k $13.9m | Added +402.8k |
| UBS Group AG 0.00% of their portfolio | 493.2k $13.5m | Added +100.0k |
| Legal & General Group Plc 0.00% of their portfolio | 421.2k $11.5m | Reduced -3.2k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 415.3k $11.3m | Added +116.6k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 410.5k $11.1m | Reduced -530.3k |
| Qube Research & Technologies Ltd 0.02% of their portfolio | 392.3k $10.7m | Added +43.4k |
| Trexquant Investment LP 0.12% of their portfolio | 390.3k $10.7m | Reduced -50.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 320.5k $8.8m | First filing |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 311.5k $8.5m | Added +62.9k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 300.0k $8.2m | Reduced -17.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 296.7k $8.1m | Added +280.7k |
| Retirement Systems of Alabama 0.03% of their portfolio | 283.9k $7.8m | Reduced -6.0k |
| Man Group plc 0.02% of their portfolio | 279.1k $7.6m | Added +95.7k |
| TWINBEECH CAPITAL LP 0.14% of their portfolio | 277.0k $7.6m | New |
| VAN ECK ASSOCIATES CORP 0.01% of their portfolio | 262.5k $7.2m | Added +122.8k |
| JUPITER ASSET MANAGEMENT LTD 0.07% of their portfolio | 257.7k $7.0m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 251.0k $6.9m | Reduced -10.1k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 249.8k $6.8m | Reduced -14.7k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 239.4k $6.5m | Added +94.2k |
| PANAGORA ASSET MANAGEMENT INC 0.03% of their portfolio | 233.8k $6.4m | Added +223.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 232.2k $6.3m | Added +33.2k |
| Crossmark Global Holdings, Inc. 0.11% of their portfolio | 224.8k $6.1m | Added +185.2k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 218.9k $6.0m | Reduced -250.8k |
| BLAIR WILLIAM & CO/IL 0.02% of their portfolio | 204.0k $5.6m | Reduced -57.2k |
| Swiss National Bank 0.00% of their portfolio | 198.5k $5.4m | Reduced -11.1k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 195.3k $5.3m | Added +182.7k |
| California Public Employees Retirement System 0.00% of their portfolio | 193.1k $5.3m | Added +6.3k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 190.8k $5.2m | Reduced -79.5k |
| Robertson Opportunity Capital, LLC 1.96% of their portfolio | 188.2k $5.1m | Unchanged |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 185.7k $5.1m | Added +119.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 183.0k $5.0m | Added +17.5k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.03% of their portfolio | 182.9k $5.0m | Reduced -5.3k |
| Jump Financial, LLC 0.07% of their portfolio | 176.3k $4.8m | Added +69.3k |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 174.8k $4.8m | Added +116.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 171.1k $4.7m | Added +3.1k |
| Engineers Gate Manager LP 0.08% of their portfolio | 168.4k $4.6m | Added +68.5k |
| ExodusPoint Capital Management, LP 0.06% of their portfolio | 160.1k $4.4m | Added +47.1k |
| CIBC WORLD MARKET INC. 0.01% of their portfolio | 158.9k $4.3m | Added +70.4k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 155.3k $4.2m | Added +1.6k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 153.4k $4.2m | Added +33.0k |
| HRT FINANCIAL LP 0.03% of their portfolio | 152.6k $4.2m | Added +75.9k |
| LBP AM SA 0.06% of their portfolio | 149.3k $4.1m | Added +27.2k |
| Verition Fund Management LLC 0.02% of their portfolio | 137.9k $3.8m | Added +80.1k |
| ALGERT GLOBAL LLC 0.09% of their portfolio | 136.7k $3.7m | Reduced -57.2k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 130.4k $3.6m | Reduced -58.7k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 125.4k $3.4m | Added +32.4k |
| CAPITAL FUND MANAGEMENT S.A. 0.04% of their portfolio | 124.3k $3.4m | Added +42.2k |
| Corebridge Financial, Inc. 0.02% of their portfolio | 120.4k $3.3m | Reduced -8.6k |
| Private Advisor Group, LLC 0.02% of their portfolio | 119.9k $3.3m | Added +23.2k |
| Aquatic Capital Management LLC 0.08% of their portfolio | 116.2k $3.2m | Added +45.1k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 115.1k $3.1m | Added +2.0k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 113.9k $3.1m | Reduced -13.3k |
| Edgestream Partners, L.P. 0.10% of their portfolio | 104.5k $2.9m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 98.7k $2.7m | Reduced -1.4k |
| Paralel Advisors LLC 0.11% of their portfolio | 96.0k $2.6m | Unchanged |
| Penserra Capital Management LLC 0.04% of their portfolio | 92.1k $2.5m | Added +15.6k |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 88.9k $2.4m | Added +2.3k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 87.7k $2.4m | Added +2.2k |
| AGF MANAGEMENT LTD 0.01% of their portfolio | 86.1k $2.4m | Reduced -950 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 83.5k $2.3m | Reduced -4.7k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 83.0k $2.3m | Added +2.5k |
| Bridgewater Associates, LP 0.01% of their portfolio | 81.7k $2.2m | New |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.26% of their portfolio | 81.3k $2.2m | Reduced -1.6k |