Security record · archived quarter
AMSC
American Superconductor Corporation · Industrials · Electrical Equipment & Parts
97Tracked holders
+2Δ holders
21.85MShares held
$738.85MReported value
+12New positions
−10Exits
Momentum inputs (comparable managers):
holder breadth +2.1% ·
share flow -3.0% ·
net new positions +2.1%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 96 | +4 | 22.82M | $946.45M | +10 | −8 |
| Q1 2026 | 97 | +2 | 21.85M | $738.85M | +12 | −10 |
| Q4 2025 | 95 | -1 | 24.00M | $691.45M | — | −1 |
| Q3 2025 | 19 | +1 | 15.15M | $899.55M | +1 | — |
| Q2 2025 | 15 | +1 | 11.40M | $418.12M | +1 | — |
| Q1 2025 | 11 | 0 | 4.33M | $78.61M | +1 | −1 |
| Q4 2024 | 11 | 0 | 5.01M | $123.30M | +2 | −2 |
| Q3 2024 | 10 | 0 | 4.09M | $96.55M | +2 | −2 |
| Q2 2024 | 10 | — | 4.75M | $111.12M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.98M | +6.2% | $134.81M | 0.0% | ▲ Add | 4 | SEC ↗ ×16 |
| 2 | Vanguard Capital Management Llc | 2.04M | — | $69.04M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Baillie Gifford ✦ | 1.45M | -3.9% | $49.00M | 0.1% | ▼ Trim | 8 | SEC ↗ ×4 |
| 4 | State Street Global Advisors ✦ (passive) | 1.26M | +5.8% | $42.69M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 1.17M | +7.2% | $39.58M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 6 | Nuveen, LLC | 1.02M | +6.2% | $34.56M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 7 | First Trust Advisors Lp | 778.27K | +13.9% | $26.34M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | Goldman Sachs Group ✦ | 709.50K | -9.3% | $24.02M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 9 | Dimensional Fund Advisors Lp | 658.30K | +21.9% | $22.28M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 10 | Morgan Stanley ✦ | 633.84K | -10.2% | $21.46M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 11 | UBS Group AG | 599.82K | -19.4% | $20.30M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 12 | D. E. Shaw & Co. ✦ | 567.57K | +28.1% | $19.21M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 13 | Legal & General Group Plc | 530.13K | +90.7% | $17.94M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 14 | Arrowstreet Capital ✦ | 446.75K | -34.6% | $15.12M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 15 | Bnp Paribas Financial Markets | 436.69K | +429.3% | $14.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | Northern Trust Corp | 393.22K | +9.0% | $13.31M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 17 | Charles Schwab Investment… | 385.41K | -0.5% | $13.05M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | Nomura Asset Management… | 379.48K | -17.5% | $12.85M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 19 | Qube Research & Technologies Ltd | 329.41K | -45.0% | $11.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | Invesco Ltd. | 240.79K | -37.6% | $8.15M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 21 | Sei Investments Co | 224.44K | +184.8% | $7.60M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 22 | Citadel Advisors ✦ | 216.71K | -35.8% | $7.34M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 23 | Bank Of America Corp /De/ | 209.45K | +26.5% | $7.09M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 24 | AQR Capital Management ✦ | 184.75K | +26.6% | $6.25M | 0.0% | ▲ Add | 7 | SEC ↗ ×8 |
| 25 | Two Sigma Investments ✦ | 169.02K | -47.4% | $5.72M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 26 | Baird Financial Group, Inc. | 163.26K | +21.0% | $5.53M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 27 | Fidelity (FMR) ✦ | 147.29K | +18.4% | $4.99M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 28 | Allspring Global Investments… | 149.60K | -26.9% | $4.88M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 29 | Balyasny Asset Management L.P. | 144.14K | -5.7% | $4.88M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 30 | Bank of New York Mellon Corp | 134.79K | -1.6% | $4.56M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 31 | JPMorgan Chase ✦ | 136.84K | +11.2% | $4.41M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 32 | Raymond James Financial Inc | 123.95K | -12.6% | $4.20M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 33 | Millennium Management ✦ | 101.58K | +30.1% | $3.44M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 34 | Swiss National Bank | 89.10K | 0.0% | $3.02M | 0.0% | Held | 2 | SEC ↗ |
| 35 | UBS AM, a distinct business unit of… | 88.39K | +14.5% | $2.99M | 0.0% | ▲ Add | 2 | SEC ↗ ×9 |
| 36 | LPL Financial LLC | 87.32K | +117.9% | $2.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Mackenzie Financial Corp | 77.54K | +92.7% | $2.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | New York State Common Retirement… | 70.40K | 0.0% | $2.38M | 0.0% | Held | 2 | SEC ↗ |
| 39 | Boston Partners | 66.07K | New | $2.24M | 0.0% | New | 1 | SEC ↗ |
| 40 | Ameriprise Financial Inc | 62.34K | +5.7% | $2.11M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 41 | Susquehanna International Group, Llp | 61.81K | -5.8% | $2.09M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | Rhumbline Advisers | 59.68K | +3.5% | $2.02M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | T. Rowe Price ✦ | 58.61K | -78.7% | $1.99M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 44 | Amundi | 58.17K | +25.6% | $1.97M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Wells Fargo & Company/Mn | 58.16K | -56.6% | $1.97M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 46 | California State Teachers… | 57.02K | +12.0% | $1.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Lazard Asset Management Llc | 56.45K | New | $1.91M | 0.0% | New | 1 | SEC ↗ |
| 48 | Tidal Investments LLC | 43.37K | +79.3% | $1.47M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 49 | HighTower Advisors, LLC | 43.27K | +312.9% | $1.46M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Deutsche Bank Ag\ | 42.92K | +10.8% | $1.45M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 51 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 38.80K | +18.2% | $1.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Alliancebernstein L.P. | 44.42K | +13.0% | $1.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Russell Investments Group, Ltd. | 37.36K | +6.6% | $1.26M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 54 | Focus Partners Wealth | 33.26K | -3.0% | $1.13M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Truist Financial Corp | 32.70K | 0.0% | $1.11M | 0.0% | Held | 2 | SEC ↗ |
| 56 | Royal Bank Of Canada | 31.34K | -30.6% | $1.06M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 57 | Franklin Resources Inc | 29.48K | -15.9% | $997,830 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | Mariner, LLC | 25.15K | +22.3% | $851,311 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | State Board Of Administration Of… | 24.26K | 0.0% | $821,336 | 0.0% | Held | 2 | SEC ↗ |
| 60 | Zurcher Kantonalbank (Zurich… | 22.25K | -0.5% | $753,095 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | Manufacturers Life Insurance… | 20.83K | +2.0% | $705,028 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | Janus Henderson Group Plc | 20.13K | 0.0% | $681,133 | 0.0% | Held | 2 | SEC ↗ |
| 63 | Assenagon Asset Management S.A. | 18.68K | +110.1% | $632,284 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Barclays Plc | 17.51K | -76.3% | $592,848 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 65 | Canada Pension Plan Investment Board | 15.20K | -30.3% | $514,520 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Universal- Beteiligungs- und… | 15.12K | +6.6% | $511,880 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Voya Investment Management Llc | 14.24K | -0.8% | $482,092 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 68 | Aviva Plc | 14.13K | New | $478,436 | 0.0% | New | 1 | SEC ↗ |
| 69 | Quantinno Capital Management LP | 13.00K | +0.5% | $440,118 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Mitsubishi UFJ Asset Management… | 12.90K | -2.9% | $436,631 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 71 | Group One Trading Llc | 12.28K | +303.8% | $415,610 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Holocene Advisors, LP | 12.13K | New | $410,533 | 0.0% | New | 1 | SEC ↗ |
| 73 | ProShare Advisors LLC | 10.96K | -6.0% | $370,826 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Commonwealth Equity Services, Llc | 10.79K | +6.9% | $365,340 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | Credit Agricole S A | 10.74K | -48.9% | $363,718 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Osaic Holdings, Inc. | 10.59K | -5.5% | $358,499 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 77 | Victory Capital Management Inc | 10.09K | -86.9% | $341,479 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Cetera Investment Advisers | 10.02K | -12.3% | $339,279 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 79 | Creative Planning | 9.22K | New | $312,063 | 0.0% | New | 1 | SEC ↗ |
| 80 | Cwm, Llc | 8.82K | +13.8% | $298,659 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Us Bancorp \De\ | 8.82K | +0.7% | $298,591 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Pictet Asset Management Holding SA | 7.41K | New | $250,930 | 0.0% | New | 1 | SEC ↗ |
| 83 | Prudential Financial Inc | 7.28K | New | $246,428 | 0.0% | New | 1 | SEC ↗ |
| 84 | Jones Financial Companies Lllp | 7.16K | -8.8% | $241,401 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 85 | Cerity Partners LLC | 6.39K | New | $216,335 | 0.0% | New | 1 | SEC ↗ |
| 86 | Wealth Enhancement Advisory… | 6.40K | New | $205,423 | 0.0% | New | 1 | SEC ↗ |
| 87 | Walleye Trading LLC | 5.07K | New | $171,450 | 0.0% | New | 1 | SEC ↗ |
| 88 | Citigroup Inc | 4.89K | +206.5% | $165,493 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 89 | Ensign Peak Advisors, Inc | 4.55K | 0.0% | $154,018 | 0.0% | Held | 2 | SEC ↗ |
| 90 | Optiver Holding B.V. | 1.88K | New | $63,706 | 0.0% | New | 1 | SEC ↗ |
| 91 | Rockefeller Capital Management L.P. | 1.57K | +0.6% | $53,246 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 92 | BNP Paribas Asset Management… | 887 | +26.7% | $30,025 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | Pnc Financial Services Group, Inc. | 341 | -92.0% | $11,544 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 94 | National Bank Of Canada /Fi/ | 294 | +145.0% | $9,943 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 95 | Fifth Third Bancorp | 195 | New | $6,601 | 0.0% | New | 1 | SEC ↗ |
| 96 | Northwestern Mutual Wealth… | 110 | -35.3% | $3,724 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 97 | TD Waterhouse Canada Inc. | 100 | 0.0% | $3,251 | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Boston Partners | $2.24M | 0.0% |
| Lazard Asset Management Llc | $1.91M | 0.0% |
| Aviva Plc | $478,436 | 0.0% |
| Holocene Advisors, LP | $410,533 | 0.0% |
| Creative Planning | $312,063 | 0.0% |
| Pictet Asset Management… | $250,930 | 0.0% |
| Prudential Financial Inc | $246,428 | 0.0% |
| Cerity Partners LLC | $216,335 | 0.0% |
| Wealth Enhancement Advisory… | $205,423 | 0.0% |
| Walleye Trading LLC | $171,450 | 0.0% |
| Optiver Holding B.V. | $63,706 | 0.0% |
| Fifth Third Bancorp | $6,601 | 0.0% |
Exited
| Tudor Investment Corp Et Al | $7.24M | was 0.0% |
| Jane Street Group, Llc | $6.99M | was 0.0% |
| Renaissance Technologies | $4.03M | was 0.0% |
| Point72 Asset Management | $2.23M | was 0.0% |
| Hrt Financial Lp | $2.01M | was 0.0% |
| Principal Financial Group Inc | $1.70M | was 0.0% |
| Man Group plc | $1.04M | was 0.0% |
| Hsbc Holdings Plc | $667,184 | was 0.0% |
| State Of Wisconsin Investment… | $323,113 | was 0.0% |
| Federated Hermes, Inc. | $979 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 240 holders, 33.03M shares, $1.09B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Jul 31
SC 13G/A — VANGUARD CAPITAL MANAGEMENT LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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