IRDM
Iridium Communications Inc. · Communication Services · Telecommunications Services
Momentum inputs (comparable managers):
holder breadth -5.0% ·
share flow +4.0% ·
net new positions -10.5%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 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) | 11.00M | +3.6% | $191.99M | 0.0% | ▲ Add | 2 | SEC ↗ ×15 |
| 2 | The Vanguard Group ✦ (passive) | 9.48M | -2.6% | $165.52M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 3 | ARK Investment Management ✦ | 6.49M | +21.7% | $113.32M | 0.7% | ▲ Add | 6 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 4.04M | -1.0% | $70.47M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | Millennium Management ✦ | 3.04M | +265.9% | $53.07M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 6 | Goldman Sachs Group ✦ | 1.91M | — | $33.42M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 7 | Morgan Stanley ✦ | 1.84M | — | $32.10M | 0.0% | n/c | 1 | SEC ↗ ×11 |
| 8 | Geode Capital Management ✦ (passive) | 1.70M | -11.2% | $29.76M | 0.0% | ▼ Trim | 6 | SEC ↗ ×2 |
| 9 | Citadel Advisors ✦ | 1.65M | +36.0% | $28.81M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 10 | JPMorgan Chase ✦ | 1.23M | — | $21.39M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 11 | Arrowstreet Capital ✦ | 937.58K | +148.3% | $16.37M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 739.59K | +330.9% | $12.91M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 382.40K | -57.2% | $6.68M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 14 | Gotham Asset Management ✦ | 307.52K | -67.7% | $5.37M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 128.06K | -38.0% | $2.21M | 0.0% | ▼ Trim | 6 | SEC ↗ ×3 |
| 16 | Bridgewater Associates ✦ | 116.73K | New | $2.04M | 0.0% | New | 1 | SEC ↗ |
| 17 | T. Rowe Price ✦ | 105.23K | -94.7% | $1.84M | 0.0% | ▼ Trim | 6 | SEC ↗ ×2 |
| 18 | Marshall Wace ✦ | 61.48K | +122.3% | $1.07M | 0.0% | ▲ Add | 6 | SEC ↗ ×3 |
| 19 | D. E. Shaw & Co. ✦ | 51.86K | +44.0% | $905,510 | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Bridgewater Associates | $2.04M | 0.0% |
Exited
| Norges Bank | $16.30M | was 0.0% |
| Point72 Asset Management | $4.11M | was 0.0% |
| GAMCO Investors | $259,462 | 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 ↗