ASPN — ASPEN AEROGELS INC
As of Q2 2026, 33 SEC-registered investment managers reported holding ASPN (ASPEN AEROGELS INC) in their latest 13F filings, with a combined reported value of $138.28M across 22.00M shares. That is +15.6% by share count (+2.96M shares) versus the previous quarter, while reported value moved +113.6%. Ownership is concentrated: the five largest holders account for 52.1% of reported value and the top ten for 77.9%.
Compared with the prior quarter, 3 opened new positions, 20 added to existing stakes, 10 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
ASPN is classified in the Consumer Discretionary sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| BlackRock Inc history | Q2 2026 | 5.28M | $33.46M | 0.00% | Add |
| Vanguard Group history | Q4 2025 | 4.69M | $13.26M | 0.00% | Add |
| Geode Capital Management history | Q2 2026 | 1.77M | $11.23M | 0.00% | Add |
| Invesco Ltd history | Q2 2026 | 1.62M | $10.27M | 0.00% | Reduce |
| Goldman Sachs Group history | Q2 2026 | 1.37M | $8.70M | 0.00% | Add |
| Royce & Associates history | Q2 2026 | 1.32M | $8.39M | 0.07% | Add |
| AQR Capital Management history | Q2 2026 | 1.28M | $8.09M | 0.00% | Add |
| Millennium Management history | Q2 2026 | 1.19M | $7.55M | 0.00% | Reduce |
| Marshall Wace history | Q2 2026 | 1.15M | $7.27M | 0.01% | Reduce |
| D. E. Shaw & Co history | Q2 2026 | 1.07M | $6.76M | 0.00% | Add |
| JPMorgan Chase & Co history | Q2 2026 | 1.00M | $6.01M | 0.00% | New |
| Two Sigma Investments history | Q2 2026 | 779.47K | $4.94M | 0.00% | Add |
| Charles Schwab Investment Management history | Q2 2026 | 570.71K | $3.62M | 0.00% | Add |
| Northern Trust Corp history | Q2 2026 | 565.57K | $3.59M | 0.00% | Add |
| Citadel Advisors history | Q2 2026 | 481.73K | $3.05M | 0.00% | Reduce |
| Morgan Stanley history | Q2 2026 | 397.07K | $2.52M | 0.00% | Add |
| Deutsche Bank AG history | Q2 2026 | 372.08K | $2.36M | 0.00% | Add |
| First Eagle Investment Management history | Q4 2025 | 622.49K | $1.76M | 0.00% | Add |
| Renaissance Technologies history | Q2 2026 | 274.39K | $1.74M | 0.00% | New |
| Bank of America Corp history | Q2 2026 | 252.75K | $1.60M | 0.00% | Add |
New Positions (Q2 2026)
- JPMorgan Chase & Co 1.00M sh · $6.01M
- Renaissance Technologies 274.39K sh · $1.74M
- Arrowstreet Capital 171.15K sh · $1.09M
Fully Exited (vs previous quarter)
- Lazard Asset Management sold 141.75K sh · $484.77K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 4.66M | 5.00M | 4.96M | 4.98M | 4.98M | 4.93M | 4.74M | 5.28M |
| Geode Capital Management | 383.01K | 387.64K | 405.51K | 454.70K | 518.38K | 772.60K | 977.42K | 1.07M | 1.08M | 1.11M | 1.18M | 1.31M | 1.39M | 1.46M | 1.52M | 1.58M | 1.58M | 1.60M | 1.54M | 1.77M |
| Invesco Ltd | 361.09K | 797.43K | 728.83K | 31.74K | 12.20K | 14.19K | 18.14K | 11.04K | — | 216.12K | 256.82K | 395.72K | 49.15K | 50.87K | 72.63K | 831.99K | 1.22M | 4.13M | 2.30M | 1.62M |
| Goldman Sachs Group | 20.24K | 42.38K | 174.62K | 209.00K | 354.32K | 257.55K | 352.60K | 362.33K | 365.54K | 222.41K | 217.15K | 441.13K | 390.76K | 671.77K | 1.27M | 2.20M | 1.42M | 1.29M | 899.51K | 1.37M |
| Royce & Associates | 496.85K | 422.28K | 491.83K | 580.43K | 517.28K | 741.28K | 972.38K | 1.10M | 1.46M | 1.72M | 1.65M | 1.24M | 1.21M | 946.62K | 706.28K | 531.07K | — | — | 986.51K | 1.32M |
| AQR Capital Management | 23.41K | 38.54K | 34.13K | 23.51K | — | — | — | — | — | — | 139.86K | 78.72K | 14.66K | — | 150.19K | 189.83K | 177.81K | 369.95K | 526.12K | 1.28M |
| Millennium Management | 156.51K | 38.54K | 212.29K | 204.10K | 100.68K | 1.04M | 1.27M | 417.71K | 19.16K | — | — | 391.56K | 33.39K | 1.62M | 1.60M | 906.75K | 1.45M | 870.95K | 1.40M | 1.19M |
| Marshall Wace | — | 2.85K | — | — | — | — | 918.61K | 232.64K | 193.02K | — | — | 25.90K | 31.10K | 24.53K | 305.83K | 404.01K | 312.19K | 554.18K | 1.26M | 1.15M |
| D. E. Shaw & Co | — | 21.20K | — | 202.00K | 350.47K | 219.28K | 77.79K | — | — | — | — | 541.50K | 22.46K | — | 24.79K | 20.72K | 13.22K | 23.22K | 833.57K | 1.07M |
| JPMorgan Chase & Co | 13.06K | 32.67K | 17.47K | 25.02K | 28.14K | 43.13K | 1.11K | 45.43K | 34.96K | 34.33K | 20.09K | 24.90K | 25.69K | 105.59K | 606.75K | 1.25M | 1.35M | 1.48M | — | 1.00M |
| Two Sigma Investments | — | — | 161.54K | 553.55K | 472.60K | 514.77K | 310.29K | — | — | — | — | 405.75K | 80.33K | 592.76K | 901.48K | 771.31K | 811.53K | 757.42K | 441.44K | 779.47K |
| Charles Schwab Investment Management | 56.33K | 57.62K | 58.59K | 71.61K | 79.09K | 93.55K | 136.83K | 144.90K | 149.16K | 146.74K | 143.35K | 167.18K | 509.43K | 549.71K | 487.73K | 545.84K | 572.59K | 540.32K | 556.73K | 570.71K |
| Northern Trust Corp | 207.81K | 218.00K | 206.44K | 261.20K | 280.50K | 382.12K | 517.52K | 534.44K | 528.40K | 521.14K | 510.23K | 511.38K | 563.69K | 641.05K | 604.19K | 603.66K | 613.60K | 539.17K | 523.42K | 565.57K |
| Citadel Advisors | 468.12K | 420.98K | 766.54K | 240.09K | 225.50K | 311.47K | 873.22K | 553.96K | 767.33K | 543.45K | 376.18K | 1.12M | 763.59K | 1.48M | 1.36M | 408.53K | 1.45M | 1.29M | 810.19K | 481.73K |
| Morgan Stanley | 45.08K | 55.73K | 139.53K | 375.94K | 425.92K | 330.87K | 418.63K | 168.51K | 349.00K | 665.20K | 1.09M | 539.19K | 825.88K | 775.33K | 790.11K | 706.00K | 694.49K | 347.65K | 188.31K | 397.07K |
| Deutsche Bank AG | 16.39K | 14.13K | 325.33K | 326.18K | 326.11K | 338.45K | 352.73K | 338.49K | 63.13K | 200.79K | 328.52K | 292.73K | 303.15K | 415.39K | 259.55K | 215.02K | 220.21K | 223.09K | 359.54K | 372.08K |
| Renaissance Technologies | 108.75K | 34.15K | 56.70K | 78.30K | 160.20K | 122.70K | 33.50K | 227.40K | — | — | — | 349.70K | 133.90K | 766.40K | 764.10K | 679.20K | 246.90K | — | — | 274.39K |
| Bank of America Corp | 6.49K | 14.42K | 56.22K | 107.72K | 37.98K | 9.01K | 109.24K | 124.62K | 62.34K | 31.65K | 244.76K | 120.21K | 125.01K | 119.87K | 364.99K | 818.21K | 814.85K | 752.43K | 241.02K | 252.75K |
| Prudential Financial | — | 12.80K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10.15K | 229.94K |
| BNY Mellon | 90.51K | 88.51K | 94.87K | 95.64K | 128.85K | 143.96K | 185.14K | 212.25K | 208.06K | 218.17K | 179.68K | 226.67K | 173.79K | 189.88K | 188.57K | 200.99K | 214.95K | 196.90K | 185.67K | 195.39K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details