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 ($24.6m this quarter). Holder counts are more reliable. Shares outstanding: 105.0m as of 2026-02-06, 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 ≈ $17.39. Options: 12 managers hold calls ($12.3m notional), 9 hold puts ($9.6m).
Trends to Q4 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 |
| Q3 2025 | 324 |
| Q4 2025 | 325 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 186 | 164 |
| Q2 2024 | 168 | 170 |
| Q3 2024 | 163 | 171 |
| Q4 2024 | 161 | 177 |
| Q1 2025 | 182 | 165 |
| Q2 2025 | 155 | 212 |
| Q3 2025 | 177 | 178 |
| Q4 2025 | 161 | 174 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $12.7m | $9.7m | 0.76 |
| Q2 2025 | $20.4m | $29.6m | 1.45 |
| Q3 2025 | $10.4m | $11.0m | 1.05 |
| Q4 2025 | $12.3m | $9.6m | 0.78 |
Biggest buyers
| BlackRock, Inc. | Added | +2.9m |
| Gotham Asset Management, LLC | Added | +2.0m |
| STATE STREET CORP | Added | +725.9k |
| VANGUARD GROUP INC | Added | +677.3k |
| BARCLAYS PLC | Added | +443.0k |
| VAN ECK ASSOCIATES CORP | Added | +441.6k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +431.7k |
| Maxi Investments CY Ltd | New | +424.0k |
| GOLDMAN SACHS GROUP INC | Added | +408.9k |
| Public Sector Pension Investment Board | New | +362.5k |
Biggest sellers
| ARK Investment Management LLC | Reduced | -3.6m |
| Amova Asset Management Americas, Inc. | Reduced | -3.2m |
| Sumitomo Mitsui Trust Group, Inc. | Reduced | -3.2m |
| MILLENNIUM MANAGEMENT LLC | Reduced | -2.0m |
| BANK OF AMERICA CORP /DE/ | Reduced | -1.4m |
| Synergy Asset Management, LLC | Sold out | -1.3m |
| ANCHOR CAPITAL MANAGEMENT COMPANY, LLC | Sold out | -735.4k |
| M&G PLC | Sold out | -680.9k |
| JPMORGAN CHASE & CO | Reduced | -679.2k |
| CITADEL ADVISORS LLC | Reduced | -509.6k |
Biggest calls
| GROUP ONE TRADING LLC | Added | $3.5m198.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.9m110.7k shares |
| Caption Management, LLC | New | $1.4m80.0k shares |
| SIMPLEX TRADING, LLC | Added | $1.4m79.5k shares |
| IMC-Chicago, LLC | Reduced | $969.8k55.8k shares |
| CITADEL ADVISORS LLC | Added | $874.2k50.3k shares |
| J. Goldman & Co LP | New | $869.0k50.0k shares |
| JANE STREET GROUP, LLC | Reduced | $650.0k37.4k shares |
| Walleye Capital LLC | Reduced | $448.4k25.8k shares |
| CAPITAL FUND MANAGEMENT S.A. | Added | $227.7k13.1k shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $3.7m212.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.4m136.7k shares |
| Caption Management, LLC | New | $1.4m80.0k shares |
| IMC-Chicago, LLC | Reduced | $710.8k40.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $504.0k29.0k shares |
| JANE STREET GROUP, LLC | Reduced | $438.0k25.2k shares |
| GROUP ONE TRADING LLC | Reduced | $272.9k15.7k shares |
| Walleye Capital LLC | Reduced | $111.2k6.4k shares |
| Walleye Trading LLC | Added | $104.3k6.0k 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 Q4 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 |
|---|---|---|---|---|---|
| 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 | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 2 | $871.3k | 1 | $557.4k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-10-31 | FITZPATRICK THOMAS Director | Sold | $375.1k20.8k shares |
| 2025-10-30 | DESCH MATTHEW J CHIEF EXECUTIVE OFFICER, director | Bought | $346.6k20.0k shares |
| 2025-10-28 | NIEHAUS ROBERT H Director | Bought | $524.7k30.0k shares |
| 2025-10-28 | FITZPATRICK THOMAS Director | Sold | $122.3k6.8k shares |
| 2025-10-27 | FITZPATRICK THOMAS Director | Sold | $60.0k3.3k 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, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 13.9m $241.4m | Added +2.9m |
| VANGUARD GROUP INC 0.00% of their portfolio | 10.2m $176.5m | Added +677.3k |
| Silver Heights Capital Management Inc 36.21% of their portfolio | 5.3m $91.3m | Added +61.4k |
| STATE STREET CORP 0.00% of their portfolio | 4.8m $82.8m | Added +725.9k |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 3.1m $53.5m | Added +199.8k |
| ARK Investment Management LLC 0.33% of their portfolio | 2.9m $49.5m | Reduced -3.6m |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 2.3m $40.4m | Added +408.9k |
| Gotham Asset Management, LLC 0.15% of their portfolio | 2.3m $40.1m | Added +2.0m |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 2.1m $36.4m | Reduced -234.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.9m $33.2m | Added +203.8k |
| Man Group plc 0.06% of their portfolio | 1.9m $32.2m | Reduced -160.5k |
| MORGAN STANLEY 0.00% of their portfolio | 1.8m $31.2m | Reduced -43.0k |
| Pacer Advisors, Inc. 0.06% of their portfolio | 1.4m $23.6m | Reduced -385.4k |
| UBS Group AG 0.00% of their portfolio | 1.3m $22.1m | Reduced -95.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.2m $21.0m | Added +161.1k |
| VAN ECK ASSOCIATES CORP 0.02% of their portfolio | 1.2m $20.9m | Added +441.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 1.2m $20.4m | Added +101.8k |
| Sumitomo Mitsui Trust Group, Inc. 0.01% of their portfolio | 1.2m $20.3m | Reduced -3.2m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 1.2m $20.1m | Added +217.9k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 1.1m $19.8m | Reduced -509.6k |
| Amova Asset Management Americas, Inc. 0.22% of their portfolio | 1.1m $19.4m | Reduced -3.2m |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 1.0m $18.0m | Reduced -2.0m |
| Invesco Ltd. 0.00% of their portfolio | 994.2k $17.3m | Added +106.9k |
| BARCLAYS PLC 0.01% of their portfolio | 980.8k $17.0m | Added +443.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 974.4k $16.9m | Reduced -69.2k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 954.7k $16.7m | Reduced -37.8k |
| Penserra Capital Management LLC 0.18% of their portfolio | 853.2k $14.8m | Added +76.6k |
| Select Equity Group, L.P. 0.07% of their portfolio | 835.9k $14.5m | Reduced -225.6k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 812.0k $14.1m | Added +431.7k |
| JUPITER ASSET MANAGEMENT LTD 0.11% of their portfolio | 808.4k $14.0m | Reduced -41.6k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 700.5k $12.2m | Reduced -39.0k |
| TUDOR INVESTMENT CORP ET AL 0.06% of their portfolio | 666.0k $11.6m | Added +5.1k |
| PINNACLE ASSOCIATES LTD 0.14% of their portfolio | 606.4k $10.5m | Reduced -1.1k |
| Nuveen, LLC 0.00% of their portfolio | 599.4k $10.4m | Added +230.4k |
| Defiance ETFs, LLC 0.32% of their portfolio | 565.2k $9.9m | First filing |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 546.0k $9.5m | Reduced -679.2k |
| Trexquant Investment LP 0.08% of their portfolio | 531.6k $9.2m | Reduced -38.2k |
| BROWN ADVISORY INC 0.01% of their portfolio | 512.4k $8.9m | Reduced -556 |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 506.6k $8.8m | Added +40.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 497.6k $8.6m | Added +262.1k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 479.1k $8.3m | Added +351.1k |
| FMR LLC 0.00% of their portfolio | 459.9k $8.0m | Added +77.5k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 428.3k $7.4m | Added +13.6k |
| Maxi Investments CY Ltd 1.34% of their portfolio | 424.0k $7.4m | New |
| Bridgewater Associates, LP 0.03% of their portfolio | 419.8k $7.3m | Added +303.1k |
| Legal & General Group Plc 0.00% of their portfolio | 410.9k $7.1m | Added +87.2k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 396.6k $7.0m | Added +224.3k |
| CAPITAL FUND MANAGEMENT S.A. 0.06% of their portfolio | 378.6k $6.6m | Added +239.3k |
| Public Sector Pension Investment Board 0.02% of their portfolio | 362.5k $6.3m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 360.8k $6.3m | Reduced -45.9k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 353.8k $6.1m | Added +128.1k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 327.3k $5.7m | Reduced -104.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 322.5k $5.6m | Added +72.9k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 308.2k $5.4m | Added +186.8k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 302.8k $5.3m | Added +189.9k |
| Crossmark Global Holdings, Inc. 0.07% of their portfolio | 291.5k $5.1m | Reduced -8.1k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 279.4k $4.9m | Added +234.6k |
| NORDEA INVESTMENT MANAGEMENT AB 0.00% of their portfolio | 267.6k $4.6m | Reduced -50.3k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 248.5k $4.3m | New |
| DARK FOREST CAPITAL MANAGEMENT LP 0.20% of their portfolio | 248.0k $4.3m | Reduced -70.7k |
| BLAIR WILLIAM & CO/IL 0.01% of their portfolio | 235.0k $4.1m | Added +7.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 224.5k $3.9m | Reduced -42.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 216.4k $3.8m | Reduced -1.4m |
| BAMCO INC /NY/ 0.01% of their portfolio | 200.0k $3.5m | Reduced -482.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 197.5k $3.4m | Added +104.0k |
| ArchPoint Investors 0.81% of their portfolio | 197.1k $3.4m | Added +1.4k |
| Carolina Wealth Advisors, LLC 1.52% of their portfolio | 196.1k $3.4m | Reduced -9.4k |
| Balyasny Asset Management L.P. 0.01% of their portfolio | 190.6k $3.3m | Reduced -102.8k |
| Swiss National Bank 0.00% of their portfolio | 188.7k $3.3m | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 184.1k $3.2m | Added +27.2k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.02% of their portfolio | 177.7k $3.1m | Reduced -3.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 171.8k $3.0m | Reduced -67.6k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 170.4k $3.0m | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 169.1k $2.9m | Reduced -29.0k |
| ALGERT GLOBAL LLC 0.05% of their portfolio | 168.6k $2.9m | New |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.01% of their portfolio | 153.9k $2.7m | Reduced -16.8k |
| Squarepoint Ops LLC 0.01% of their portfolio | 153.8k $2.7m | Added +1.1k |
| Engineers Gate Manager LP 0.03% of their portfolio | 151.6k $2.6m | Reduced -140.7k |
| Retirement Systems of Alabama 0.01% of their portfolio | 151.4k $2.6m | Reduced -128.3k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 148.8k $2.6m | Added +87.4k |
| Holocene Advisors, LP 0.01% of their portfolio | 141.1k $2.5m | Added +4.4k |
| Redwood Investment Management, LLC 0.27% of their portfolio | 139.0k $2.4m | New |
| Amundi 0.00% of their portfolio | 138.9k $2.4m | Added +12.2k |
| PDT Partners, LLC 0.16% of their portfolio | 138.2k $2.4m | Added +48.0k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 114.2k $2.0m | Added +411 |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 113.5k $2.0m | Reduced -62.2k |
| Daiwa Securities Group Inc. 0.01% of their portfolio | 112.7k $2.0m | Added +45.4k |
| ICON ADVISERS INC/CO 0.41% of their portfolio | 109.5k $1.9m | Added +57.9k |
| ExodusPoint Capital Management, LP 0.02% of their portfolio | 109.2k $1.9m | Reduced -8.8k |
| Inspire Investing, LLC 0.17% of their portfolio | 109.2k $1.9m | Added +80.1k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 105.8k $1.8m | Added +23.0k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 103.3k $1.8m | Reduced -401.3k |
| Paralel Advisors LLC 0.07% of their portfolio | 97.9k $1.7m | Unchanged |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 96.7k $1.7m | Added +86.3k |
| Weiss Asset Management LP 0.02% of their portfolio | 96.5k $1.7m | Reduced -19.6k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 96.1k $1.7m | Added +43.3k |
| INTECH INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 92.9k $1.6m | Added +17.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 91.7k $1.6m | Reduced -270 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 89.9k $1.6m | Reduced -15.3k |
| CITIGROUP INC 0.00% of their portfolio | 89.4k $1.6m | Reduced -221.4k |