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 ($3.6m this quarter). Holder counts are more reliable. Shares outstanding: 125.1m as of 2023-07-18, 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 ≈ $62.09. Options: 11 managers hold calls ($33.0m notional), 10 hold puts ($27.1m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 331 |
| Q4 2022 | 364 |
| Q1 2023 | 372 |
| Q2 2023 | 392 |
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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $21.7m | $7.0m | 0.32 |
| Q4 2022 | $22.0m | $12.3m | 0.56 |
| Q1 2023 | $34.2m | $15.6m | 0.45 |
| Q2 2023 | $33.0m | $27.1m | 0.82 |
Biggest buyers
| MILLENNIUM MANAGEMENT LLC | Added | +768.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +748.1k |
| BANK OF MONTREAL /CAN/ | Added | +555.4k |
| ArrowMark Colorado Holdings LLC | Added | +501.6k |
| D. E. Shaw & Co., Inc. | Added | +351.1k |
| Assenagon Asset Management S.A. | Added | +337.2k |
| HRT FINANCIAL LP | New | +279.8k |
| Man Group plc | New | +262.3k |
| Sumitomo Mitsui Trust Group, Inc. | Added | +232.6k |
| Amova Asset Management Americas, Inc. | Added | +232.6k |
Biggest sellers
| BlackRock Inc. | Reduced | -2.4m |
| FMR LLC | Reduced | -1.4m |
| STATE STREET CORP | Reduced | -782.3k |
| GOLDMAN SACHS GROUP INC | Reduced | -772.9k |
| Select Equity Group, L.P. | Reduced | -668.4k |
| VANGUARD GROUP INC | Reduced | -534.6k |
| NORTHERN TRUST CORP | Reduced | -523.8k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -515.8k |
| Man Group plc | Sold out | -355.5k |
| Waratah Capital Advisors Ltd. | Sold out | -321.2k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $9.8m157.0k shares |
| PEAK6 Investments LLC | Reduced | $6.7m108.0k shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | New | $6.2m100.0k shares |
| GOLDMAN SACHS GROUP INC | Unchanged | $3.3m52.8k shares |
| CITADEL ADVISORS LLC | Reduced | $3.2m50.9k shares |
| GROUP ONE TRADING LLC | Reduced | $1.2m19.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $888.0k14.3k shares |
| Walleye Trading LLC | Reduced | $726.8k11.7k shares |
| JANE STREET GROUP, LLC | Reduced | $552.9k8.9k shares |
| WOLVERINE TRADING, LLC | Reduced | $505.7k8.2k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $12.2m196.8k shares |
| CITADEL ADVISORS LLC | Added | $5.1m82.0k shares |
| PEAK6 Investments LLC | Added | $4.1m65.7k shares |
| SIMPLEX TRADING, LLC | Added | $2.5m40.3k shares |
| Walleye Trading LLC | Added | $2.1m34.1k shares |
| GROUP ONE TRADING LLC | Reduced | $366.5k5.9k shares |
| JANE STREET GROUP, LLC | New | $316.8k5.1k shares |
| WOLVERINE TRADING, LLC | Added | $308.4k5.0k shares |
| RAYMOND JAMES & ASSOCIATES | Unchanged | $90.0k1.5k 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 Q2 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 |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 0 | — | — |
| 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 | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-05-03 | Hartin Bryan J. EVP-Sales and Marketing | Sold | $1.8m27.8k shares |
| 2023-05-01 | NIEHAUS ROBERT H Director | Sold | $3.6m55.8k shares |
| 2023-04-25 | Hartin Bryan J. EVP-Sales and Marketing | Sold | $536.6k8.1k 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 2023
| Manager | Shares | Change |
|---|---|---|
| BAMCO INC /NY/ 2.50% of their portfolio | 14.5m $902.3m | Added +84.1k |
| VANGUARD GROUP INC 0.02% of their portfolio | 12.0m $746.7m | Reduced -534.6k |
| BlackRock Inc. 0.02% of their portfolio | 11.6m $721.5m | Reduced -2.4m |
| Capital International Investors 0.12% of their portfolio | 7.7m $480.5m | Added +1.1k |
| STATE STREET CORP 0.01% of their portfolio | 4.0m $250.3m | Reduced -782.3k |
| Silver Heights Capital Management Inc 47.52% of their portfolio | 2.4m $150.8m | Reduced -1.9k |
| Clearbridge Investments, LLC 0.12% of their portfolio | 2.1m $128.2m | Added +7.3k |
| DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio | 2.1m $127.5m | Reduced -50.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.0m $123.7m | Reduced -515.8k |
| Invesco Ltd. 0.03% of their portfolio | 2.0m $123.3m | Reduced -102.4k |
| Capital World Investors 0.02% of their portfolio | 1.6m $97.1m | Unchanged |
| ARK Investment Management LLC 0.64% of their portfolio | 1.5m $96.2m | Added +95.4k |
| MORGAN STANLEY 0.01% of their portfolio | 1.4m $87.4m | Reduced -16.4k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 1.4m $85.8m | Reduced -523.8k |
| Van Berkom & Associates Inc. 2.95% of their portfolio | 1.3m $81.2m | Reduced -45.0k |
| NORGES BANK 0.02% of their portfolio | 1.3m $79.7m | Added +76.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 1.2m $76.8m | Reduced -270.2k |
| MILLENNIUM MANAGEMENT LLC 0.08% of their portfolio | 1.2m $75.3m | Added +768.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 1.2m $74.6m | Added +20.1k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 1.2m $74.0m | Reduced -106.4k |
| CITADEL ADVISORS LLC 0.07% of their portfolio | 1.0m $62.3m | Reduced -233.4k |
| Driehaus Capital Management LLC 0.78% of their portfolio | 997.0k $61.9m | Added +182.4k |
| Sumitomo Mitsui Trust Group, Inc. 0.05% of their portfolio | 935.9k $58.1m | Added +232.6k |
| Amova Asset Management Americas, Inc. 0.61% of their portfolio | 935.9k $58.1m | Added +232.6k |
| D. E. Shaw & Co., Inc. 0.08% of their portfolio | 873.5k $54.3m | Added +351.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.08% of their portfolio | 807.1k $50.1m | Added +748.1k |
| PINNACLE ASSOCIATES LTD 0.79% of their portfolio | 734.2k $45.6m | Reduced -24.8k |
| Nuveen Asset Management, LLC 0.02% of their portfolio | 706.9k $43.9m | Reduced -142.8k |
| ArrowMark Colorado Holdings LLC 0.47% of their portfolio | 695.3k $43.2m | Added +501.6k |
| MACQUARIE GROUP LTD 0.05% of their portfolio | 641.6k $39.9m | Added +19.2k |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 581.6k $36.2m | Added +555.4k |
| Legal & General Group Plc 0.01% of their portfolio | 570.4k $35.4m | Added +17.5k |
| DUDLEY & SHANLEY, INC. 5.83% of their portfolio | 519.6k $32.3m | Added +35.0k |
| BROWN ADVISORY INC 0.05% of their portfolio | 515.0k $32.0m | Reduced -5.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 493.0k $30.6m | Reduced -5.5k |
| VOYA INVESTMENT MANAGEMENT LLC 0.03% of their portfolio | 492.3k $30.6m | Added +135.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 466.8k $29.0m | Reduced -80.6k |
| BLAIR WILLIAM & CO/IL 0.10% of their portfolio | 443.6k $27.6m | Added +6.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 438.9k $27.3m | Reduced -173.4k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 1.26% of their portfolio | 399.1k $24.8m | Added +215.2k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 389.0k $24.2m | Reduced -8.9k |
| Assenagon Asset Management S.A. 0.09% of their portfolio | 375.8k $23.3m | Added +337.2k |
| Select Equity Group, L.P. 0.08% of their portfolio | 362.4k $22.5m | Reduced -668.4k |
| FMR LLC 0.00% of their portfolio | 348.4k $21.6m | Reduced -1.4m |
| RAYMOND JAMES & ASSOCIATES 0.02% of their portfolio | 324.7k $20.2m | Added +9.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 318.1k $19.8m | Added +69.6k |
| Retirement Systems of Alabama 0.09% of their portfolio | 313.7k $19.5m | Reduced -1.9k |
| BRAUN STACEY ASSOCIATES INC 0.86% of their portfolio | 297.2k $18.5m | Reduced -141.0k |
| HRT FINANCIAL LP 0.17% of their portfolio | 279.8k $17.4m | New |
| PUTNAM INVESTMENTS LLC 0.03% of their portfolio | 273.6k $17.0m | Added +562 |
| SG Capital Management LLC 6.89% of their portfolio | 270.2k $16.8m | Added +70.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 262.7k $16.3m | Reduced -772.9k |
| Man Group plc 0.05% of their portfolio | 262.3k $16.3m | New |
| Nicholas Investment Partners, LP 1.10% of their portfolio | 259.6k $16.1m | Added +45.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio | 259.0k $16.1m | Added +99.4k |
| Raymond James Financial Services Advisors, Inc. 0.03% of their portfolio | 257.1k $16.0m | Added +3.8k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 254.0k $15.8m | Reduced -57.8k |
| California Public Employees Retirement System 0.01% of their portfolio | 253.7k $15.8m | Reduced -21.6k |
| Swiss National Bank 0.01% of their portfolio | 248.1k $15.4m | Added +4.0k |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC 1.15% of their portfolio | 237.8k $14.8m | Added +97.8k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.11% of their portfolio | 234.3k $14.6m | Added +20.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 221.7k $13.7m | Unchanged |
| Cubist Systematic Strategies, LLC 0.15% of their portfolio | 217.8k $13.5m | Added +151.2k |
| Balyasny Asset Management L.P. 0.04% of their portfolio | 205.5k $12.8m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 200.9k $12.5m | Added +56.3k |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 194.8k $12.1m | New |
| AMERICAN INTERNATIONAL GROUP, INC. 0.07% of their portfolio | 191.1k $11.9m | Reduced -61.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 173.0k $10.7m | Reduced -23.9k |
| CREDIT SUISSE AG/ 0.01% of their portfolio | 169.6k $10.5m | Added +33.7k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 168.9k $10.5m | Reduced -118.1k |
| Amundi 0.01% of their portfolio | 165.3k $10.2m | Reduced -9.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio | 157.3k $9.8m | Added +4.0k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 146.3k $9.1m | Added +38.7k |
| GUGGENHEIM CAPITAL LLC 0.07% of their portfolio | 144.7k $9.0m | Reduced -7.9k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 142.1k $8.8m | Reduced -3.8k |
| Connor, Clark & Lunn Investment Management Ltd. 0.04% of their portfolio | 134.9k $8.4m | Added +12.0k |
| Engineers Gate Manager LP 0.31% of their portfolio | 133.0k $8.3m | Added +47.2k |
| AXIOM INVESTORS LLC /DE 0.12% of their portfolio | 128.1k $8.0m | Added +5.8k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 114.8k $7.1m | Added +33 |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 114.2k $7.1m | Added +63.9k |
| CASTLEARK MANAGEMENT LLC 0.32% of their portfolio | 112.8k $7.0m | Added +12.5k |
| TEXAS PERMANENT SCHOOL FUND CORP 0.06% of their portfolio | 110.9k $6.9m | Reduced -1.8k |
| BESSEMER GROUP INC 0.01% of their portfolio | 110.1k $6.8m | Added +109.9k |
| Resolute Capital Asset Partners LLC 4.86% of their portfolio | 110.0k $6.8m | Added +20.0k |
| UBS Group AG 0.00% of their portfolio | 109.7k $6.8m | Reduced -24.1k |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna 3.22% of their portfolio | 108.4k $6.7m | Added +895 |
| Ergoteles LLC 0.31% of their portfolio | 105.7k $6.6m | Added +83.0k |
| PICTON MAHONEY ASSET MANAGEMENT 0.32% of their portfolio | 104.0k $6.5m | Added +16.7k |
| Baird Financial Group, Inc. 0.02% of their portfolio | 101.7k $6.3m | Added +94.9k |
| WealthTrust Axiom LLC 1.99% of their portfolio | 96.8k $6.0m | Reduced -20.4k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 95.3k $5.9m | Added +4.6k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio | 94.6k $5.9m | Reduced -47.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 94.0k $5.8m | Reduced -49.4k |
| Cetera Advisor Networks LLC 0.04% of their portfolio | 93.4k $5.8m | Reduced -1.0k |
| ALGERT GLOBAL LLC 0.25% of their portfolio | 92.7k $5.8m | Added +16.7k |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.06% of their portfolio | 91.4k $5.7m | Reduced -75.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 91.2k $5.7m | Added +7.8k |
| MACKENZIE FINANCIAL CORP 0.01% of their portfolio | 91.2k $5.6m | Reduced -6.9k |
| BARCLAYS PLC 0.00% of their portfolio | 89.9k $5.6m | Reduced -15.3k |
| AMALGAMATED BANK 0.05% of their portfolio | 89.8k $5.6m | Added +5.7k |