ASPN
Aspen Aerogels, Inc. · Basic Materials · Chemicals - Specialty
Momentum inputs (comparable managers):
holder breadth +22.2% ·
share flow -30.0% ·
net new positions +18.2%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 76 | +3 | 36.34M | $229.77M | +8 | −5 |
| Q1 2026 | 75 | +4 | 32.71M | $111.61M | +13 | −9 |
| Q4 2025 | 71 | -2 | 36.38M | $102.97M | — | −2 |
| Q3 2025 | 17 | 0 | 22.22M | $154.67M | +1 | −1 |
| Q2 2025 | 14 | +1 | 16.35M | $96.82M | +1 | — |
| Q1 2025 | 10 | 0 | 7.40M | $47.29M | +2 | −2 |
| Q4 2024 | 10 | -2 | 7.79M | $92.59M | +1 | −3 |
| Q3 2024 | 11 | +2 | 2.29M | $63.46M | +2 | — |
| Q2 2024 | 9 | — | 3.76M | $89.60M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 1.39M | +5.7% | $38.39M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.39M | +5.7% | $38.39M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Citadel Advisors ✦ | 397.79K | -36.9% | $11.01M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | Wellington Management ✦ | 150.63K | New | $4.17M | 0.0% | New | 1 | SEC ↗ |
| 5 | Wellington Management ✦ | 150.63K | New | $4.17M | 0.0% | New | 1 | SEC ↗ |
| 6 | Wellington Management ✦ | 150.63K | New | $4.17M | 0.0% | New | 1 | SEC ↗ |
| 7 | Renaissance Technologies ✦ | 133.90K | -61.7% | $3.71M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Two Sigma Investments ✦ | 80.33K | -80.2% | $2.22M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | Millennium Management ✦ | 33.39K | -91.5% | $924,569 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Marshall Wace ✦ | 31.10K | +20.1% | $861,159 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 30.76K | +40.6% | $852,000 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | D. E. Shaw & Co. ✦ | 22.46K | -95.8% | $622,056 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 14.66K | -81.4% | $405,907 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 14.66K | -81.4% | $405,907 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 14.66K | -81.4% | $405,907 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | Gotham Asset Management ✦ | 10.61K | New | $293,680 | 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
| Wellington Management | $4.17M | 0.0% |
| Wellington Management | $4.17M | 0.0% |
| Wellington Management | $4.17M | 0.0% |
| Gotham Asset Management | $293,680 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 164 holders, 68.34M shares, $229.58M 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.