Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
231 institutional managers reported holding AESI for the quarter ended Mar 31, 2026. Together they hold about 72% of shares outstanding; the top 10 hold 40%. 38 opened new positions; 37 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 11.49M | 9.22% | $150.8M | trimmed -12.6% | 2023 Q1 |
| Encompass Capital Advisors LLC | 9.14M | 7.33% | $119.9M | opened | 2026 Q1 |
| Vanguard Group | 8.96M | 7.19% | $117.6M | added +11.9% | 2023 Q1 |
| Cooperman Leon G (focused) | 4.08M | 3.28% | $53.6M | trimmed -19.2% | 2025 Q2 |
| State Street | 3.36M | 2.69% | $44.1M | added +3.6% | 2023 Q2 |
| Barrow Hanley Mewhinney & Strauss LLC | 3.15M | 2.53% | $41.3M | trimmed -6% | 2023 Q3 |
| Janus Henderson | 2.56M | 2.06% | $33.6M | trimmed -1.1% | 2023 Q1 |
| Cooke & Bieler LP | 2.52M | 2.02% | $33.0M | trimmed -39.9% | 2024 Q1 |
| UBS | 2.50M | 2.00% | $32.7M | added +12.8% | 2023 Q2 |
| Millennium Management | 2.46M | 1.98% | $32.3M | added +30.9% | 2023 Q1 |
| Geode Capital | 1.86M | 1.50% | $24.5M | added +2% | 2023 Q2 |
| Villere ST Denis J & CO LLC | 1.86M | 1.49% | $24.4M | trimmed -8.4% | 2023 Q3 |
| Pine Ridge Advisers LLC (focused) | 1.84M | 1.48% | $24.2M | unchanged | 2024 Q1 |
| Goldman Sachs | 1.81M | 1.45% | $23.7M | added +51% | 2023 Q1 |
| Dimensional Fund Advisors | 1.50M | 1.21% | $19.7M | added +12.6% | 2024 Q2 |
| Wellington Management | 1.48M | 1.19% | $19.4M | added +29% | 2025 Q4 |
| Franklin Resources | 1.40M | 1.13% | $18.4M | added +58.4% | 2025 Q3 |
| Ameriprise Financial INC | 1.36M | 1.09% | $17.8M | added +18.2% | 2024 Q4 |
| Liontrust Investment Partners LLP | 1.31M | 1.05% | $17.2M | unchanged | 2025 Q1 |
| Nixon Capital, LLC (focused) | 1.20M | 0.96% | $15.7M | unchanged | 2025 Q4 |
| Venturi Wealth Management, LLC | 1.09M | 0.87% | $14.3M | unchanged | 2023 Q4 |
| Meridian Wealth Advisors, LLC | 954.0k | 0.77% | $12.5M | trimmed -3.7% | 2023 Q4 |
| CenterBook Partners LP | 924.9k | 0.74% | $12.1M | added +203.1% | 2025 Q1 |
| Morgan Stanley | 903.7k | 0.72% | $11.9M | added +12.5% | 2023 Q1 |
| Kennedy Capital Management LLC | 820.3k | 0.66% | $10.8M | trimmed -34.6% | 2024 Q3 |
| Northern Trust | 772.8k | 0.62% | $10.1M | added +3.9% | 2023 Q2 |
| Charles Schwab Investment Management | 721.8k | 0.58% | $9.5M | added +4.8% | 2023 Q2 |
| Silvercrest Asset Management Group LLC | 713.4k | 0.57% | $9.4M | trimmed -9.6% | 2024 Q3 |
| BNP Paribas Financial Markets | 654.3k | 0.53% | $8.6M | added +3414.5% | 2024 Q1 |
| B & T Capital Management DBA Alpha Capital Management | 633.0k | 0.51% | $8.3M | trimmed -16.5% | 2023 Q3 |
| Consolidated Portfolio Review CORP (focused) | 627.9k | 0.50% | $8.2M | unchanged | 2025 Q4 |
| Evergreen Capital Management LLC | 625.5k | 0.50% | $8.2M | trimmed -52.9% | 2023 Q1 |
| Invesco | 586.0k | 0.47% | $7.7M | trimmed -31% | 2023 Q2 |
| Bank OF America CORP /DE/ | 526.6k | 0.42% | $6.9M | added +81.2% | 2023 Q1 |
| Lazard Asset Management LLC | 525.3k | 0.42% | $6.9M | added +48.3% | 2023 Q3 |
| CDC Financial, INC. (focused) | 518.1k | 0.42% | $6.8M | trimmed -12.5% | 2025 Q4 |
| SIR Capital Management, L.p. | 442.7k | 0.35% | $5.8M | opened | 2025 Q2 |
| ExodusPoint | 434.1k | 0.35% | $5.7M | added +89.4% | 2025 Q4 |
| BNY Mellon | 428.5k | 0.34% | $5.6M | trimmed -2.8% | 2023 Q2 |
| Quantinno Capital Management LP | 384.0k | 0.31% | $5.0M | added +11.4% | 2024 Q1 |
| Principal Financial Group INC | 375.3k | 0.30% | $4.9M | added +2.2% | 2024 Q1 |
| Simcoe Capital LLC (focused) | 332.5k | 0.27% | $4.4M | added +21.4% | 2025 Q4 |
| Advisors Asset Management, INC. | 319.8k | 0.26% | $4.2M | trimmed -0.7% | 2025 Q2 |
| Squarepoint Ops LLC | 305.6k | 0.24% | $4.0M | added +42.8% | 2024 Q3 |
| Manatuck Hill Partners, LLC | 302.0k | 0.24% | $4.0M | added +31.3% | 2025 Q4 |
| Balyasny Asset Management | 292.7k | 0.23% | $3.8M | trimmed -76.1% | 2025 Q1 |
| HRT Financial LP | 279.8k | 0.23% | $3.7M | opened | 2025 Q1 |
| Public Sector Pension Investment Board | 275.0k | 0.22% | $3.6M | added +3.5% | 2024 Q4 |
| Russell Investments Group, LTD. | 274.8k | 0.22% | $3.6M | added +13.2% | 2023 Q2 |
| First Trust Advisors LP | 270.4k | 0.22% | $3.5M | added +30.4% | 2023 Q3 |
Largest 50 of 231 shown; the full ranked, searchable register is at boothcheck.com/holders/AESI. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.