IRDM
Iridium Communications Inc. · Communication Services · Telecommunications Services
Momentum inputs (comparable managers):
holder breadth -5.3% ·
share flow -2.9% ·
net new positions -5.6%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 117 | +4 | 67.60M | $3.70B | +12 | −10 |
| Q1 2026 | 118 | +7 | 65.96M | $1.83B | +13 | −6 |
| Q4 2025 | 110 | +1 | 73.07M | $1.27B | +1 | — |
| Q3 2025 | 19 | -1 | 45.20M | $789.23M | +1 | −3 |
| Q2 2025 | 18 | -1 | 39.05M | $1.18B | +1 | −2 |
| Q1 2025 | 16 | +2 | 18.96M | $517.90M | +2 | — |
| Q4 2024 | 14 | 0 | 15.52M | $450.38M | — | — |
| Q3 2024 | 13 | -1 | 12.19M | $371.05M | +1 | −2 |
| Q2 2024 | 14 | — | 12.30M | $327.45M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 10.62M | — | $320.30M | 0.0% | n/c | 1 | SEC ↗ ×18 |
| 2 | The Vanguard Group ✦ (passive) | 9.74M | — | $293.81M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | ARK Investment Management ✦ | 5.33M | +9.0% | $160.91M | 1.2% | ▲ Add | 5 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 4.08M | -8.5% | $122.98M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 1.97M | +1.2% | $59.39M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 6 | Geode Capital Management ✦ (passive) | 1.92M | -5.0% | $57.91M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 7 | Citadel Advisors ✦ | 1.21M | +192.0% | $36.59M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 8 | Gotham Asset Management ✦ | 951.20K | +8.2% | $28.70M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 9 | Fidelity (FMR) ✦ | 894.27K | — | $26.98M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 10 | Millennium Management ✦ | 830.87K | -42.6% | $25.07M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 11 | Norges Bank ✦ (passive) | 540.18K | -40.0% | $16.30M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 12 | Arrowstreet Capital ✦ | 377.57K | -31.1% | $11.39M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 206.52K | -49.7% | $6.17M | 0.0% | ▼ Trim | 5 | SEC ↗ ×5 |
| 14 | Two Sigma Investments ✦ | 171.62K | +179.3% | $5.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Point72 Asset Management ✦ | 136.31K | -28.6% | $4.11M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 16 | D. E. Shaw & Co. ✦ | 36.01K | -83.5% | $1.09M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 17 | Marshall Wace ✦ | 27.65K | -85.8% | $834,231 | 0.0% | ▼ Trim | 5 | SEC ↗ ×4 |
| 18 | GAMCO Investors ✦ | 8.60K | New | $259,462 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| GAMCO Investors | $259,462 | 0.0% |
Exited
| Renaissance Technologies | $8.11M | was 0.0% |
| Bridgewater Associates | $2.23M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 376 holders, 88.61M shares, $2.35B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 5.77K sh · $267,393
Officer · 2.01K sh · $95,336
Director · 15.05K sh · $740,263
Director · 209.23K sh · $10.51M
Officer · 32.65K sh · $1.64M
Officer · 13.47K sh · $680,521
Officer · 19.02K sh · $957,327
Officer · 500 sh · $25,440
Officer · 544 sh · $27,662
Officer, Director · 85.45K sh · $4.30M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
9.4% of class · View original SEC filing ↗