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 ($3.4m this quarter). Holder counts are more reliable. Shares outstanding: 122.4m as of 2024-02-09, 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 ≈ $41.16. Options: 11 managers hold calls ($18.6m notional), 8 hold puts ($11.1m).
Trends to Q4 2023
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 150 | 160 |
| Q1 2023 | 175 | 176 |
| Q2 2023 | 191 | 166 |
| Q3 2023 | 147 | 229 |
| Q4 2023 | 133 | 198 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2023 | $34.2m | $15.6m | 0.45 |
| Q2 2023 | $33.0m | $27.1m | 0.82 |
| Q3 2023 | $24.7m | $16.9m | 0.68 |
| Q4 2023 | $18.6m | $11.1m | 0.60 |
Biggest buyers
| JACOBS LEVY EQUITY MANAGEMENT, INC | New | +1.1m |
| JPMORGAN CHASE & CO | Added | +795.1k |
| Select Equity Group, L.P. | Added | +756.2k |
| Van Berkom & Associates Inc. | Added | +676.2k |
| Pacer Advisors, Inc. | Added | +583.9k |
| Amova Asset Management Americas, Inc. | Added | +539.9k |
| Sumitomo Mitsui Trust Group, Inc. | Added | +539.9k |
| MORGAN STANLEY | Added | +495.8k |
| D. E. Shaw & Co., Inc. | Added | +423.0k |
| ArrowMark Colorado Holdings LLC | Added | +288.2k |
Biggest sellers
| Man Group plc | Sold out | -802.0k |
| BAMCO INC /NY/ | Reduced | -537.5k |
| Capital International Investors | Reduced | -480.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -428.3k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -426.8k |
| CITADEL ADVISORS LLC | Reduced | -424.7k |
| MACQUARIE GROUP LTD | Reduced | -258.1k |
| BlackRock Inc. | Reduced | -247.1k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -240.4k |
| Nicholas Investment Partners, LP | Sold out | -239.7k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $5.5m133.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.6m62.8k shares |
| Walleye Capital LLC | New | $1.8m44.4k shares |
| CAPITAL FUND MANAGEMENT S.A. | New | $1.7m41.7k shares |
| PEAK6 Investments LLC | Reduced | $1.6m39.0k shares |
| SIMPLEX TRADING, LLC | Added | $1.3m32.3k shares |
| GROUP ONE TRADING LLC | Added | $1.3m31.6k shares |
| WOLVERINE TRADING, LLC | Added | $1.2m29.7k shares |
| Walleye Trading LLC | Added | $856.1k20.8k shares |
| JANE STREET GROUP, LLC | Reduced | $658.6k16.0k shares |
Biggest puts
| PEAK6 Investments LLC | Reduced | $4.7m113.3k shares |
| CITADEL ADVISORS LLC | Reduced | $1.9m46.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.4m33.6k shares |
| Walleye Trading LLC | Reduced | $1.2m30.0k shares |
| SIMPLEX TRADING, LLC | Added | $814.0k19.8k shares |
| Walleye Capital LLC | New | $749.1k18.2k shares |
| GROUP ONE TRADING LLC | Reduced | $292.2k7.1k 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 Q4 2023
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 2022 | 0 | — | 2 | $235.7k | — |
| Q2 2022 | 0 | — | 0 | — | — |
| Q3 2022 | 0 | — | 7 | $12.1m | — |
| Q4 2022 | 0 | — | 5 | $8.0m | — |
| Q1 2023 | 0 | — | 11 | $29.3m | — |
| Q2 2023 | 0 | — | 2 | $5.9m | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 1 | $1.0m | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-11-20 | DESCH MATTHEW J Chief Executive Officer, director | Bought | $1.0m28.0k 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 2023
| Manager | Shares | Change |
|---|---|---|
| BAMCO INC /NY/ 1.54% of their portfolio | 14.0m $578.1m | Reduced -537.5k |
| VANGUARD GROUP INC 0.01% of their portfolio | 11.8m $483.8m | Reduced -232.8k |
| BlackRock Inc. 0.01% of their portfolio | 11.4m $468.4m | Reduced -247.1k |
| Capital International Investors 0.07% of their portfolio | 7.4m $304.7m | Reduced -480.7k |
| STATE STREET CORP 0.01% of their portfolio | 4.3m $176.6m | Added +265.4k |
| Van Berkom & Associates Inc. 3.27% of their portfolio | 2.7m $112.6m | Added +676.2k |
| Silver Heights Capital Management Inc 42.12% of their portfolio | 2.7m $109.3m | Added +214.5k |
| Clearbridge Investments, LLC 0.08% of their portfolio | 2.3m $93.3m | Added +97.2k |
| ARK Investment Management LLC 0.53% of their portfolio | 2.2m $89.5m | Added +249.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.0m $84.0m | Added +49.4k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 1.9m $79.3m | Reduced -58.8k |
| MORGAN STANLEY 0.00% of their portfolio | 1.9m $76.9m | Added +495.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.8m $73.9m | Added +213.2k |
| Sumitomo Mitsui Trust Group, Inc. 0.05% of their portfolio | 1.7m $71.8m | Added +539.9k |
| Amova Asset Management Americas, Inc. 0.69% of their portfolio | 1.7m $71.8m | Added +539.9k |
| Invesco Ltd. 0.02% of their portfolio | 1.7m $69.1m | Reduced -29.2k |
| Capital World Investors 0.01% of their portfolio | 1.6m $64.4m | Unchanged |
| ArrowMark Colorado Holdings LLC 0.71% of their portfolio | 1.6m $64.2m | Added +288.2k |
| NORGES BANK 0.01% of their portfolio | 1.3m $55.1m | Added +51.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.3m $52.1m | Added +24.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 1.3m $51.5m | Reduced -12.8k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.2m $50.4m | Added +69.3k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.2m $48.7m | Added +795.1k |
| Select Equity Group, L.P. 0.17% of their portfolio | 1.1m $46.7m | Added +756.2k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.22% of their portfolio | 1.1m $44.0m | New |
| D. E. Shaw & Co., Inc. 0.06% of their portfolio | 977.1k $40.2m | Added +423.0k |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 974.6k $40.1m | Added +116.6k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 941.6k $38.8m | Reduced -426.8k |
| PINNACLE ASSOCIATES LTD 0.50% of their portfolio | 716.3k $29.5m | Added +1.2k |
| Pacer Advisors, Inc. 0.07% of their portfolio | 603.9k $24.9m | Added +583.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 563.8k $23.2m | Added +145.0k |
| Legal & General Group Plc 0.01% of their portfolio | 527.5k $21.7m | Reduced -40.7k |
| DUDLEY & SHANLEY, INC. 3.83% of their portfolio | 521.3k $21.5m | Reduced -43.2k |
| BROWN ADVISORY INC 0.03% of their portfolio | 515.0k $21.2m | Added +25 |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 492.2k $20.3m | Added +2.5k |
| MACQUARIE GROUP LTD 0.02% of their portfolio | 467.8k $19.3m | Reduced -258.1k |
| BLAIR WILLIAM & CO/IL 0.06% of their portfolio | 438.5k $18.0m | Reduced -156.3k |
| ANCHOR CAPITAL MANAGEMENT COMPANY, LLC 16.57% of their portfolio | 423.9k $17.4m | First filing |
| Susquehanna Portfolio Strategies, LLC 0.31% of their portfolio | 420.2k $17.3m | First filing |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 378.5k $15.6m | Reduced -6.2k |
| FMR LLC 0.00% of their portfolio | 371.4k $15.3m | Added +69.5k |
| Retirement Systems of Alabama 0.05% of their portfolio | 306.5k $12.6m | Reduced -1.0k |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 297.1k $12.2m | Added +241.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 293.2k $12.1m | Added +17.5k |
| Ceredex Value Advisors LLC 0.21% of their portfolio | 290.4k $12.0m | Added +99.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 290.1k $11.9m | Added +14.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 277.9k $11.4m | Added +10.7k |
| Man Group plc 0.03% of their portfolio | 253.3k $10.4m | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 247.3k $10.2m | Reduced -88.7k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 246.3k $10.1m | Added +168.0k |
| BESSEMER GROUP INC 0.02% of their portfolio | 234.1k $9.6m | Added +45.0k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 224.7k $9.2m | Reduced -255 |
| STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio | 221.9k $9.1m | Added +39.2k |
| California Public Employees Retirement System 0.01% of their portfolio | 221.8k $9.1m | Reduced -18.4k |
| Swiss National Bank 0.01% of their portfolio | 221.8k $9.1m | Reduced -27.4k |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 217.6k $9.0m | Reduced -67.4k |
| CREDIT SUISSE AG/ 0.01% of their portfolio | 216.4k $8.9m | Added +43.8k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 212.3k $8.8m | Reduced -6.5k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 210.2k $8.7m | Added +158.2k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.06% of their portfolio | 205.3k $8.4m | Added +348 |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 199.3k $8.2m | Added +62.6k |
| Raymond James Financial Services Advisors, Inc. 0.01% of their portfolio | 194.4k $8.0m | Reduced -28.1k |
| Gotham Asset Management, LLC 0.13% of their portfolio | 173.6k $7.1m | Added +134.6k |
| AMERICAN INTERNATIONAL GROUP, INC. 0.03% of their portfolio | 168.3k $6.9m | Reduced -8.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 161.6k $6.7m | Reduced -568 |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 151.2k $6.2m | Reduced -10.3k |
| Cubist Systematic Strategies, LLC 0.07% of their portfolio | 145.4k $6.0m | Added +77.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 122.9k $5.1m | Added +87.8k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 120.6k $5.0m | Reduced -7.4k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 117.9k $4.9m | Reduced -186 |
| TUDOR INVESTMENT CORP ET AL 0.06% of their portfolio | 113.0k $4.6m | Reduced -21.7k |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna 1.91% of their portfolio | 109.9k $4.5m | Unchanged |
| TEXAS PERMANENT SCHOOL FUND CORP 0.04% of their portfolio | 107.0k $4.4m | Added +786 |
| BARCLAYS PLC 0.00% of their portfolio | 105.2k $4.3m | Added +36.2k |
| PUTNAM INVESTMENTS LLC 0.01% of their portfolio | 103.8k $4.3m | Reduced -215.8k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 101.1k $4.2m | Reduced -3.9k |
| Squarepoint Ops LLC 0.02% of their portfolio | 99.6k $4.1m | Reduced -168.3k |
| Edgestream Partners, L.P. 0.29% of their portfolio | 99.5k $4.1m | Added +38.4k |
| UBS Group AG 0.00% of their portfolio | 99.0k $4.1m | Reduced -8.4k |
| Engineers Gate Manager LP 0.11% of their portfolio | 92.8k $3.8m | Reduced -33.3k |
| Skylands Capital, LLC 0.56% of their portfolio | 92.2k $3.8m | Added +38.6k |
| SIT INVESTMENT ASSOCIATES INC 0.09% of their portfolio | 91.7k $3.8m | Added +37.3k |
| Trexquant Investment LP 0.08% of their portfolio | 88.7k $3.6m | Reduced -18.7k |
| Cetera Advisor Networks LLC 0.02% of their portfolio | 87.6k $3.6m | Reduced -4.5k |
| CAPITAL FUND MANAGEMENT S.A. 0.05% of their portfolio | 86.5k $3.6m | Added +49.3k |
| Vident Advisory, LLC 0.09% of their portfolio | 84.2k $3.5m | Added +2.0k |
| AMALGAMATED BANK 0.03% of their portfolio | 83.8k $3.4m | Reduced -7.3k |
| ExodusPoint Capital Management, LP 0.04% of their portfolio | 83.4k $3.4m | Added +51.5k |
| SG Americas Securities, LLC 0.04% of their portfolio | 81.7k $3.4m | Added +27.3k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 79.7k $3.3m | Added +6.8k |
| LA FINANCIERE DE L'ECHIQUIER 0.15% of their portfolio | 79.7k $3.3m | Added +12.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 78.3k $3.2m | Reduced -43.8k |
| Rockefeller Capital Management L.P. 0.01% of their portfolio | 77.8k $3.2m | Added +10.5k |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 76.6k $3.2m | Reduced -4.7k |
| WealthTrust Axiom LLC 1.05% of their portfolio | 76.2k $3.1m | Reduced -10.9k |
| MetLife Investment Management, LLC 0.02% of their portfolio | 74.5k $3.1m | Reduced -2.0k |
| Alaska Permanent Fund Corp 0.05% of their portfolio | 73.1k $3.0m | Added +958 |
| PEAK6 Investments LLC 0.13% of their portfolio | 71.2k $2.9m | Added +11.0k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 71.1k $2.9m | Added +29.5k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 70.3k $2.9m | Reduced -216.5k |