IRIDIUM COMMUNICATIONS INC (IRDM): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in IRDM · Communication Services. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
23
13F filers
Aggregate Value
$749.2M
Across holders
Last Price
$47.56
2026-10-08
Sector
Communication Services
GICS
Quarterly fund activity14 increased9 reduced7 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 6.85M | $374.3M | 50.0% | 0.1% | Added | +$374.3M | Q2 2026 |
| Gotham Asset Management, LLC CIK 0001510387 | Hedge Fund | 2.51M | $137.9M | 18.4% | 0.3% | Reduced | $-46.1M | Q2 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 968K | $53.1M | 7.1% | 0.1% | Added | +$46.3M | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 754K | $41.4M | 5.5% | 0.0% | Reduced | $-19.0M | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 610K | $33.4M | 4.5% | 0.0% | Added | +$26.4M | Q2 2026 |
| Sculptor Capital LP CIK 0001054587 | Hedge Fund | 469K | $25.7M | 3.4% | 0.2% | Added | — | Q2 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 416K | $22.8M | 3.0% | 0.0% | Reduced | $-48.8M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 364K | $19.9M | 2.7% | 0.0% | Reduced | $-2.1M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 153K | $8.4M | 1.1% | 0.0% | Reduced | $-18.7M | Q2 2026 |
| Magnetar Financial LLC CIK 0001352851 | Hedge Fund | 153K | $8.4M | 1.1% | 0.1% | Added | — | Q2 2026 |
Added
Hedge Fund
$374.3M· 50.0% of total· 0.1% port· 6.85M sh· +$374.3M QoQ· Q2 2026
Reduced
Hedge Fund
$137.9M· 18.4% of total· 0.3% port· 2.51M sh· $-46.1M QoQ· Q2 2026
Added
Hedge Fund
$53.1M· 7.1% of total· 0.1% port· 968K sh· +$46.3M QoQ· Q2 2026
Reduced
Hedge Fund
$41.4M· 5.5% of total· 0.0% port· 754K sh· $-19.0M QoQ· Q2 2026
Added
Hedge Fund
$33.4M· 4.5% of total· 0.0% port· 610K sh· +$26.4M QoQ· Q2 2026
Added
Hedge Fund
$25.7M· 3.4% of total· 0.2% port· 469K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$22.8M· 3.0% of total· 0.0% port· 416K sh· $-48.8M QoQ· Q2 2026
Reduced
Hedge Fund
$19.9M· 2.7% of total· 0.0% port· 364K sh· $-2.1M QoQ· Q2 2026
Reduced
Hedge Fund
$8.4M· 1.1% of total· 0.0% port· 153K sh· $-18.7M QoQ· Q2 2026
Added
Hedge Fund
$8.4M· 1.1% of total· 0.1% port· 153K sh· — QoQ· Q2 2026
Added
Hedge Fund
$8.2M· 1.1% of total· 0.0% port· 149K sh· — QoQ· Q2 2026
Added
Hedge Fund
$3.2M· 0.4% of total· 0.0% port· 58K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$2.4M· 0.3% of total· 0.0% port· 44K sh· $-3.5M QoQ· Q2 2026
Added
Hedge Fund
$2.4M· 0.3% of total· 0.0% port· 43K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$2.1M· 0.3% of total· 0.0% port· 39K sh· $-2.6M QoQ· Q2 2026
Added
Hedge Fund
$1.6M· 0.2% of total· 0.0% port· 30K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$1.4M· 0.2% of total· 0.0% port· 26K sh· $-399K QoQ· Q2 2026
Added
Hedge Fund
$927K· 0.1% of total· 0.0% port· 17K sh· $-330K QoQ· Q2 2026
Added
Hedge Fund
$867K· 0.1% of total· 0.0% port· 16K sh· — QoQ· Q2 2026
Added
Hedge Fund
$272K· 0.0% of total· 0.0% port· 5K sh· — QoQ· Q2 2026
Added
Hedge Fund
$231K· 0.0% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$79K· 0.0% of total· 0.0% port· 1K sh· $-2.7M QoQ· Q2 2026
Added
Hedge Fund
$8K· 0.0% of total· 0.0% port· 138 sh· — QoQ· Q2 2026
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