Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
316 institutional managers reported holding LASR for the quarter ended Mar 31, 2026. Together they hold about 82% of shares outstanding; the top 10 hold 34%. 98 opened new positions; 29 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 5.22M | 8.71% | $297.9M | added +4.7% | 2018 Q2 |
| BlackRock | 4.32M | 7.20% | $246.4M | trimmed -2.9% | 2018 Q2 |
| Needham Investment Management LLC | 1.92M | 3.21% | $109.7M | added +3.5% | 2021 Q2 |
| Driehaus Capital Management LLC | 1.77M | 2.96% | $101.1M | added +142% | 2025 Q4 |
| Geode Capital | 1.44M | 2.40% | $82.2M | added +16.7% | 2018 Q2 |
| Invesco | 1.20M | 2.00% | $68.6M | trimmed -14.1% | 2018 Q2 |
| AllianceBernstein | 1.11M | 1.84% | $63.1M | added +2011.9% | 2018 Q2 |
| FMR (Fidelity) | 1.10M | 1.84% | $62.8M | added +834% | 2021 Q1 |
| State Street | 1.09M | 1.81% | $62.0M | added +3.4% | 2018 Q2 |
| Artisan Partners | 1.08M | 1.80% | $61.5M | trimmed -2.1% | 2025 Q4 |
| VAN ECK Associates CORP | 1.05M | 1.75% | $59.8M | opened | 2026 Q1 |
| AWM Investment Company, INC. | 1.02M | 1.71% | $58.4M | trimmed -12.5% | 2021 Q1 |
| Neuberger Berman Group LLC | 950.8k | 1.58% | $54.2M | trimmed -36% | 2022 Q3 |
| Hood River Capital Management LLC | 923.0k | 1.54% | $52.6M | added +14.7% | 2025 Q3 |
| Gilder Gagnon Howe & CO LLC | 786.3k | 1.31% | $44.8M | opened | 2026 Q1 |
| Pinnacle Associates LTD | 748.3k | 1.25% | $42.7M | trimmed -14.5% | 2018 Q3 |
| Emerald Advisers, LLC | 746.7k | 1.25% | $42.6M | trimmed -4.5% | 2025 Q2 |
| Dimensional Fund Advisors | 720.6k | 1.20% | $41.1M | unchanged | 2020 Q4 |
| Millennium Management | 671.8k | 1.12% | $38.3M | added +671.1% | 2022 Q3 |
| Royce & Associates | 654.5k | 1.09% | $37.3M | trimmed -29.2% | 2018 Q2 |
| Arrowstreet Capital | 585.4k | 0.98% | $33.4M | trimmed -32.1% | 2025 Q2 |
| MFS Investment Management | 564.1k | 0.94% | $32.2M | trimmed -26.8% | 2025 Q3 |
| Nuveen | 545.9k | 0.91% | $31.1M | added +3.8% | 2019 Q2 |
| AQR Capital | 536.4k | 0.89% | $30.6M | added +7.4% | 2024 Q2 |
| Northern Trust | 518.4k | 0.86% | $29.6M | added +5.5% | 2018 Q2 |
| Stephens Investment Management Group LLC | 496.3k | 0.83% | $28.3M | trimmed -34.8% | 2018 Q2 |
| Goldman Sachs | 492.9k | 0.82% | $28.1M | added +18.6% | 2019 Q3 |
| Moore Capital | 465.0k | 0.78% | $26.5M | opened | 2026 Q1 |
| Charles Schwab Investment Management | 457.1k | 0.76% | $26.1M | added +10.2% | 2018 Q2 |
| Acadian Asset Management | 444.1k | 0.74% | $25.3M | trimmed -22.4% | 2023 Q2 |
| Emerald Mutual Fund Advisers Trust | 429.8k | 0.72% | $24.5M | unchanged | 2025 Q3 |
| Harvey Partners, LLC (focused) | 413.6k | 0.69% | $23.6M | trimmed -65.6% | 2023 Q1 |
| Citadel Advisors | 398.3k | 0.66% | $22.7M | added +37.9% | 2019 Q4 |
| Oberweis Asset Management INC/ | 363.0k | 0.60% | $20.7M | added +1.9% | 2025 Q3 |
| UBS | 355.6k | 0.59% | $20.3M | added +99.6% | 2018 Q2 |
| NEW York State Common Retirement Fund | 343.3k | 0.57% | $19.6M | unchanged | 2018 Q2 |
| Aigh Capital Management LLC (focused) | 340.0k | 0.57% | $19.4M | trimmed -43.3% | 2025 Q2 |
| Apis Capital Advisors, LLC | 330.0k | 0.55% | $18.8M | added +31.6% | 2025 Q2 |
| Morgan Stanley | 324.1k | 0.54% | $18.5M | trimmed -10.4% | 2018 Q2 |
| Algert Global LLC | 321.7k | 0.54% | $18.3M | trimmed -12.1% | 2024 Q3 |
| Polar Capital Holdings PLC | 319.9k | 0.53% | $18.2M | opened | 2026 Q1 |
| Raymond James Financial INC | 319.2k | 0.53% | $18.2M | added +2.2% | 2018 Q2 |
| T. Rowe Price | 304.1k | 0.51% | $17.3M | added +1044.5% | 2023 Q4 |
| SEI Investments CO | 291.8k | 0.49% | $16.6M | added +61.2% | 2022 Q2 |
| Zevenbergen Capital Investments LLC | 285.6k | 0.48% | $16.3M | opened | 2026 Q1 |
| Qube Research & Technologies LTD | 284.4k | 0.47% | $16.2M | added +31.2% | 2025 Q3 |
| Connor, Clark & Lunn Investment Management LTD. | 256.0k | 0.43% | $14.6M | added +20.7% | 2023 Q1 |
| BlueCrest Capital Management LTD | 255.0k | 0.42% | $14.5M | opened | 2026 Q1 |
| First Trust Advisors LP | 253.5k | 0.42% | $14.5M | trimmed -3.8% | 2025 Q3 |
| Informed Momentum CO LLC | 246.8k | 0.41% | $14.1M | trimmed -10% | 2025 Q2 |
Largest 50 of 316 shown; the full ranked, searchable register is at boothcheck.com/holders/LASR. 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.