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 ($87.9m this quarter). Holder counts are more reliable. Shares outstanding: 108.8m as of 2025-02-07, 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 ≈ $29.02. Options: 9 managers hold calls ($7.8m notional), 11 hold puts ($10.8m).
Trends to Q4 2024
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 |
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 2023 | 175 | 176 |
| 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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2024 | $36.9m | $7.9m | 0.21 |
| Q2 2024 | $39.1m | $11.9m | 0.30 |
| Q3 2024 | $13.4m | $7.7m | 0.57 |
| Q4 2024 | $7.8m | $10.8m | 1.38 |
Biggest buyers
| BlackRock, Inc. | Added | +910.2k |
| AMERICAN CENTURY COMPANIES INC | Added | +842.0k |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Added | +683.8k |
| ArrowMark Colorado Holdings LLC | Added | +567.2k |
| MORGAN STANLEY | Added | +419.3k |
| Amova Asset Management Americas, Inc. | Added | +329.9k |
| Sumitomo Mitsui Trust Group, Inc. | Added | +320.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +291.2k |
| NORTHERN TRUST CORP | Added | +280.3k |
| Bank of New York Mellon Corp | Added | +275.8k |
Biggest sellers
| JACOBS LEVY EQUITY MANAGEMENT, INC | Sold out | -798.7k |
| JPMORGAN CHASE & CO | Reduced | -611.5k |
| NORGES BANK | Reduced | -499.4k |
| Van Berkom & Associates Inc. | Reduced | -358.6k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -351.0k |
| BAMCO INC /NY/ | Reduced | -349.4k |
| D. E. Shaw & Co., Inc. | Reduced | -277.9k |
| Select Equity Group, L.P. | Reduced | -227.3k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -205.7k |
| AQR CAPITAL MANAGEMENT LLC | Reduced | -200.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.6m89.0k shares |
| CITADEL ADVISORS LLC | Added | $2.0m68.3k shares |
| Caption Management, LLC | New | $1.2m40.0k shares |
| GROUP ONE TRADING LLC | Added | $806.8k27.8k shares |
| SIMPLEX TRADING, LLC | Added | $661.0k22.8k shares |
| WOLVERINE TRADING, LLC | Added | $599.7k20.7k shares |
| Walleye Trading LLC | New | $31.9k1.1k shares |
| Walleye Capital LLC | Unchanged | $2.9k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.3m112.9k shares |
| CITADEL ADVISORS LLC | Reduced | $2.7m93.3k shares |
| BARCLAYS PLC | New | $1.5m50.0k shares |
| Caption Management, LLC | New | $1.2m40.0k shares |
| SIMPLEX TRADING, LLC | Added | $789.0k27.2k shares |
| GROUP ONE TRADING LLC | Added | $615.2k21.2k shares |
| IMC-Chicago, LLC | New | $298.9k10.3k shares |
| WOLVERINE TRADING, LLC | New | $263.6k9.1k shares |
| Walleye Capital LLC | Reduced | $226.4k7.8k shares |
| Walleye Trading LLC | New | $17.4k600 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 2024
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 2023 | 0 | — | 11 | $29.3m | — |
| 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 | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-11-04 | McBride Suzanne E. CHIEF OPERATIONS OFFICER, director | Sold | $130.3k4.4k shares |
| 2024-10-23 | NIEHAUS ROBERT H Director | Sold | $1.1m38.4k 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 2024
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 12.7m $368.7m | Added +910.2k |
| VANGUARD GROUP INC 0.01% of their portfolio | 10.8m $313.8m | Reduced -178.8k |
| BAMCO INC /NY/ 0.81% of their portfolio | 10.8m $312.5m | Reduced -349.4k |
| STATE STREET CORP 0.01% of their portfolio | 4.4m $127.2m | Added +113.6k |
| Silver Heights Capital Management Inc 47.95% of their portfolio | 3.7m $107.8m | Reduced -9.8k |
| Van Berkom & Associates Inc. 2.73% of their portfolio | 3.2m $92.0m | Reduced -358.6k |
| Sumitomo Mitsui Trust Group, Inc. 0.06% of their portfolio | 2.8m $82.1m | Added +320.5k |
| Amova Asset Management Americas, Inc. 0.89% of their portfolio | 2.8m $82.0m | Added +329.9k |
| ARK Investment Management LLC 0.61% of their portfolio | 2.5m $72.8m | Added +134.9k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.06% of their portfolio | 2.2m $64.1m | Added +683.8k |
| ArrowMark Colorado Holdings LLC 0.81% of their portfolio | 2.1m $60.6m | Added +567.2k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 2.1m $59.8m | Added +149.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.0m $58.3m | Reduced -79.2k |
| MORGAN STANLEY 0.00% of their portfolio | 1.9m $54.7m | Added +419.3k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.8m $53.0m | Added +280.3k |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 1.7m $50.4m | Added +842.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 1.7m $49.7m | Added +291.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.05% of their portfolio | 1.6m $46.4m | Reduced -10.1k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.3m $37.7m | Added +275.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.1m $31.7m | Added +37.4k |
| BARCLAYS PLC 0.01% of their portfolio | 988.8k $28.7m | Added +131.9k |
| NORGES BANK 0.00% of their portfolio | 973.1k $28.2m | Reduced -499.4k |
| AQR CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 940.8k $27.3m | Reduced -200.3k |
| FMR LLC 0.00% of their portfolio | 842.3k $24.4m | Reduced -100.0k |
| PINNACLE ASSOCIATES LTD 0.31% of their portfolio | 795.3k $23.1m | Added +78.9k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 794.7k $23.1m | Reduced -205.7k |
| Select Equity Group, L.P. 0.09% of their portfolio | 751.2k $21.8m | Reduced -227.3k |
| Pacer Advisors, Inc. 0.05% of their portfolio | 741.6k $21.5m | Added +29.8k |
| ANCHOR CAPITAL MANAGEMENT COMPANY, LLC 18.06% of their portfolio | 719.9k $20.9m | Unchanged |
| Gotham Asset Management, LLC 0.19% of their portfolio | 703.4k $20.4m | Added +65.3k |
| Invesco Ltd. 0.00% of their portfolio | 659.1k $19.1m | Added +33.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 631.9k $18.3m | Reduced -611.5k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 606.9k $17.6m | First filing |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 590.0k $17.1m | Added +10.2k |
| BROWN ADVISORY INC 0.02% of their portfolio | 511.0k $14.8m | Reduced -295 |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 469.7k $13.6m | Reduced -277.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 464.5k $13.5m | Reduced -30.6k |
| Trexquant Investment LP 0.15% of their portfolio | 441.2k $12.8m | Added +258.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 430.7k $12.5m | Reduced -351.0k |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 430.3k $12.5m | Added +268.2k |
| Legal & General Group Plc 0.00% of their portfolio | 424.4k $12.3m | Reduced -15.7k |
| UBS Group AG 0.00% of their portfolio | 393.2k $11.4m | Added +166.1k |
| Qube Research & Technologies Ltd 0.02% of their portfolio | 348.9k $10.1m | Reduced -64.8k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 317.5k $9.2m | Reduced -4.4k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 298.8k $8.7m | Reduced -22.7k |
| Retirement Systems of Alabama 0.03% of their portfolio | 289.8k $8.4m | Reduced -5.4k |
| Point72 Asset Management, L.P. 0.02% of their portfolio | 270.3k $7.8m | Added +198.8k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 264.6k $7.7m | Added +75.6k |
| BLAIR WILLIAM & CO/IL 0.02% of their portfolio | 261.1k $7.6m | Reduced -29.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 261.1k $7.6m | Reduced -13.2k |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 248.6k $7.3m | Added +57.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 243.9k $7.1m | Reduced -75.2k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 213.2k $6.2m | Reduced -169.2k |
| Swiss National Bank 0.00% of their portfolio | 209.6k $6.1m | Reduced -3.8k |
| Balyasny Asset Management L.P. 0.01% of their portfolio | 206.8k $6.0m | New |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 199.0k $5.8m | Added +3.8k |
| ALGERT GLOBAL LLC 0.13% of their portfolio | 194.0k $5.6m | Reduced -171.2k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 189.1k $5.5m | Reduced -100.8k |
| Robertson Opportunity Capital, LLC 2.00% of their portfolio | 188.2k $5.5m | Unchanged |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.03% of their portfolio | 188.1k $5.5m | Reduced -7.7k |
| California Public Employees Retirement System 0.00% of their portfolio | 186.8k $5.4m | Reduced -18.4k |
| Man Group plc 0.02% of their portfolio | 183.4k $5.3m | Reduced -192.0k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 168.0k $4.9m | Added +38.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 165.5k $4.8m | Reduced -19.0k |
| WINTON GROUP Ltd 0.31% of their portfolio | 160.3k $4.7m | Added +10.8k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 153.7k $4.5m | Added +15.4k |
| Weiss Asset Management LP 0.10% of their portfolio | 153.1k $4.4m | Added +1.6k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 145.2k $4.2m | Added +74.3k |
| VAN ECK ASSOCIATES CORP 0.01% of their portfolio | 139.6k $4.1m | Added +83.5k |
| Corebridge Financial, Inc. 0.02% of their portfolio | 128.9k $3.7m | Reduced -11.2k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 127.2k $3.7m | Reduced -3.1k |
| Holocene Advisors, LP 0.01% of their portfolio | 126.4k $3.7m | Added +2.3k |
| LBP AM SA 0.05% of their portfolio | 122.1k $3.5m | Added +49.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 120.5k $3.5m | Reduced -6.5k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 113.1k $3.3m | Unchanged |
| ExodusPoint Capital Management, LP 0.03% of their portfolio | 113.0k $3.3m | Reduced -26.2k |
| Jump Financial, LLC 0.07% of their portfolio | 107.0k $3.1m | Added +37.2k |
| Cubist Systematic Strategies, LLC 0.05% of their portfolio | 104.6k $3.0m | Reduced -107.5k |
| Riverwater Partners LLC 1.43% of their portfolio | 101.5k $2.9m | Added +16.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 100.1k $2.9m | Reduced -3.9k |
| Engineers Gate Manager LP 0.05% of their portfolio | 99.9k $2.9m | Added +66.3k |
| Private Advisor Group, LLC 0.02% of their portfolio | 96.7k $2.8m | Added +46.1k |
| Alberta Investment Management Corp 0.02% of their portfolio | 96.2k $2.8m | New |
| Paralel Advisors LLC 0.12% of their portfolio | 96.0k $2.8m | Added +8.7k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 93.0k $2.8m | Added +22.7k |
| Skylands Capital, LLC 0.37% of their portfolio | 91.2k $2.6m | Reduced -77.7k |
| CIBC WORLD MARKET INC. 0.01% of their portfolio | 88.4k $2.6m | Added +1.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 88.2k $2.6m | Reduced -5.3k |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna 1.01% of their portfolio | 87.6k $2.5m | Reduced -16.4k |
| AGF MANAGEMENT LTD 0.01% of their portfolio | 87.0k $2.5m | New |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 86.6k $2.5m | Reduced -6.0k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 85.6k $2.5m | Added +3.5k |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.28% of their portfolio | 82.8k $2.4m | Added +18.4k |
| CAPITAL FUND MANAGEMENT S.A. 0.02% of their portfolio | 82.1k $2.4m | Reduced -60.7k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 80.4k $2.3m | Unchanged |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 78.6k $2.3m | Added +67.1k |
| State of New Jersey Common Pension Fund D 0.01% of their portfolio | 76.8k $2.2m | Added +866 |
| HRT FINANCIAL LP 0.01% of their portfolio | 76.7k $2.2m | Added +1.4k |
| Penserra Capital Management LLC 0.04% of their portfolio | 76.6k $2.2m | Added +16.9k |
| Aquatic Capital Management LLC 0.06% of their portfolio | 71.1k $2.1m | Added +30.3k |