Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
329 institutional managers reported holding LMAT for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 51%. 66 opened new positions; 30 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 3.14M | 13.65% | $343.7M | unchanged | ≤2013 |
| Vanguard Group | 1.65M | 7.17% | $180.6M | added +1.7% | ≤2013 |
| Conestoga Capital Advisors, LLC | 1.48M | 6.41% | $161.5M | added +3.6% | 2017 Q1 |
| First Trust Advisors LP | 998.1k | 4.33% | $109.1M | added +6.2% | 2023 Q4 |
| Copeland Capital Management, LLC | 870.7k | 3.78% | $95.2M | trimmed -2.1% | 2019 Q1 |
| State Street | 855.8k | 3.72% | $93.6M | added +6% | 2015 Q2 |
| Congress Asset Management CO | 834.5k | 3.62% | $91.2M | added +14% | 2019 Q4 |
| Geneva Capital Management LLC | 754.0k | 3.27% | $82.4M | trimmed -7.4% | 2020 Q1 |
| Geode Capital | 658.4k | 2.86% | $72.0M | added +4% | ≤2013 |
| Dimensional Fund Advisors | 476.3k | 2.07% | $52.1M | unchanged | ≤2013 |
| Goldman Sachs | 432.4k | 1.88% | $47.3M | added +10.5% | 2015 Q3 |
| Morgan Stanley | 407.8k | 1.77% | $44.6M | trimmed -7.5% | 2013 Q4 |
| Invesco | 334.0k | 1.45% | $36.5M | added +188.8% | 2015 Q2 |
| Northern Trust | 312.6k | 1.36% | $34.2M | trimmed -2.1% | ≤2013 |
| T. Rowe Price | 295.0k | 1.28% | $32.3M | added +1.7% | 2023 Q2 |
| Two Sigma | 282.0k | 1.22% | $30.8M | added +96.8% | 2020 Q4 |
| Envestnet Asset Management INC | 274.4k | 1.19% | $30.0M | added +8.3% | 2017 Q2 |
| Royal Bank OF Canada | 272.7k | 1.18% | $29.8M | trimmed -6.3% | 2016 Q4 |
| Annex Advisory Services, LLC | 250.6k | 1.09% | $27.4M | added +2.8% | 2022 Q2 |
| Ranger Investment Management, L.p. | 238.4k | 1.03% | $26.1M | trimmed -36.8% | 2017 Q2 |
| Kennedy Capital Management LLC | 236.8k | 1.03% | $25.9M | trimmed -4.5% | 2018 Q4 |
| Kayne Anderson Rudnick Investment Management LLC | 230.7k | 1.00% | $25.2M | trimmed -6.5% | 2024 Q3 |
| Charles Schwab Investment Management | 198.0k | 0.86% | $21.6M | added +0.8% | 2015 Q2 |
| Driehaus Capital Management LLC | 197.2k | 0.86% | $21.6M | opened | 2026 Q1 |
| Rice Hall James & Associates, LLC | 184.7k | 0.80% | $20.2M | added +1.3% | 2014 Q4 |
| Bank OF America CORP /DE/ | 180.1k | 0.78% | $19.7M | added +39% | 2015 Q2 |
| Bessemer Group INC | 171.8k | 0.75% | $18.8M | added +292.3% | 2023 Q2 |
| BNY Mellon | 167.3k | 0.73% | $18.3M | trimmed -2% | ≤2013 |
| Russell Investments Group, LTD. | 165.7k | 0.72% | $18.1M | trimmed -18% | 2016 Q4 |
| DF Dent & CO INC | 165.3k | 0.72% | $18.1M | trimmed -5.1% | 2018 Q2 |
| Fifth Third Bancorp | 161.1k | 0.70% | $17.6M | added +1534.2% | 2017 Q4 |
| Oberweis Asset Management INC/ | 148.6k | 0.65% | $16.2M | added +27.8% | 2022 Q3 |
| Ameriprise Financial INC | 148.4k | 0.64% | $16.2M | trimmed -9.7% | 2016 Q2 |
| Qube Research & Technologies LTD | 140.9k | 0.61% | $15.4M | trimmed -20.4% | 2023 Q2 |
| Renaissance Technologies | 138.5k | 0.60% | $15.1M | trimmed -23.3% | 2014 Q1 |
| SEI Investments CO | 136.7k | 0.59% | $14.9M | added +30.7% | 2016 Q3 |
| Marshall Wace | 131.2k | 0.57% | $14.3M | added +172.1% | 2023 Q2 |
| Rockefeller Capital Management L.p. | 127.1k | 0.55% | $13.9M | trimmed -23.2% | 2024 Q4 |
| Bahl & Gaynor INC | 124.5k | 0.54% | $13.6M | unchanged | 2016 Q1 |
| Principal Financial Group INC | 117.8k | 0.51% | $12.9M | added +4.3% | 2017 Q2 |
| Crawford Investment Counsel INC | 111.9k | 0.49% | $12.2M | added +1.9% | 2022 Q2 |
| Summit Creek Advisors LLC | 105.7k | 0.46% | $11.6M | trimmed -29.5% | 2017 Q1 |
| Riverbridge Partners LLC | 105.6k | 0.46% | $11.5M | opened | 2026 Q1 |
| Select Equity Group | 100.5k | 0.44% | $11.0M | opened | 2026 Q1 |
| Grandeur Peak Global Advisors, LLC | 98.7k | 0.43% | $10.8M | trimmed -18.4% | 2025 Q2 |
| Citadel Advisors | 97.1k | 0.42% | $10.6M | added +545.7% | 2018 Q1 |
| Osaic Holdings, INC. | 93.4k | 0.41% | $10.2M | added +5.5% | 2020 Q1 |
| D. E. Shaw | 83.6k | 0.36% | $9.1M | added +95.4% | 2023 Q2 |
| UBS | 76.3k | 0.33% | $8.3M | added +8.1% | ≤2013 |
| Vest Financial, LLC | 75.5k | 0.33% | $8.3M | added +11.9% | 2025 Q1 |
Largest 50 of 329 shown; the full ranked, searchable register is at boothcheck.com/holders/LMAT. 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.