Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
318 institutional managers reported holding NOVT for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 47%. 40 opened new positions; 44 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 4.65M | 11.31% | $549.2M | added +1.6% | 2016 Q2 |
| Vanguard Group | 4.40M | 10.69% | $518.9M | added +1.3% | 2016 Q2 |
| T. Rowe Price | 1.78M | 4.34% | $210.5M | added +193.3% | 2016 Q4 |
| Allspring Global Investments Holdings, LLC | 1.78M | 4.32% | $209.6M | added +27% | 2021 Q4 |
| Conestoga Capital Advisors, LLC | 1.45M | 3.52% | $171.1M | trimmed -0.6% | 2018 Q2 |
| State Street | 1.34M | 3.25% | $158.0M | added +1.5% | 2016 Q2 |
| Wasatch Advisors LP | 996.6k | 2.42% | $117.6M | added +54.6% | 2019 Q2 |
| Geode Capital | 937.0k | 2.28% | $110.5M | added +3.6% | 2016 Q2 |
| Geneva Capital Management LLC | 931.3k | 2.26% | $109.9M | added +3.1% | 2020 Q1 |
| Bamco INC /NY/ | 915.1k | 2.22% | $108.0M | trimmed -2.3% | 2017 Q2 |
| Congress Asset Management CO | 909.7k | 2.21% | $107.3M | added +48.7% | 2025 Q3 |
| Gw&k Investment Management, LLC | 858.7k | 2.09% | $101.3M | added +16.5% | 2019 Q2 |
| William Blair Investment Management, LLC | 783.1k | 1.90% | $92.4M | trimmed -13.8% | 2018 Q2 |
| American Century Companies INC | 693.2k | 1.68% | $81.8M | added +17.2% | 2025 Q4 |
| Nomura Asset Management International INC. | 661.2k | 1.61% | $78.0M | trimmed -4.3% | 2025 Q4 |
| Dimensional Fund Advisors | 631.8k | 1.53% | $74.5M | added +5.7% | 2016 Q2 |
| Northern Trust | 502.1k | 1.22% | $59.2M | unchanged | 2016 Q2 |
| Schroder Investment Management Group | 500.1k | 1.22% | $59.0M | trimmed -16.7% | 2022 Q3 |
| SEI Investments CO | 484.3k | 1.18% | $57.1M | added +47.6% | 2016 Q4 |
| Mawer Investment Management LTD. | 482.2k | 1.17% | $56.9M | added +5.5% | 2025 Q2 |
| Brown Advisory INC | 458.5k | 1.11% | $54.1M | trimmed -15.7% | 2018 Q4 |
| Bank OF America CORP /DE/ | 456.2k | 1.11% | $53.8M | added +18.3% | 2016 Q2 |
| Charles Schwab Investment Management | 445.6k | 1.08% | $52.6M | added +0.9% | 2016 Q2 |
| Goldman Sachs | 441.4k | 1.07% | $52.1M | trimmed -8.7% | 2016 Q2 |
| Morgan Stanley | 438.6k | 1.07% | $51.8M | added +5.3% | 2016 Q2 |
| Wellington Management | 417.2k | 1.01% | $49.2M | added +16.6% | 2019 Q4 |
| Barrow Hanley Mewhinney & Strauss LLC | 411.5k | 1.00% | $48.6M | added +18.7% | 2025 Q3 |
| Champlain Investment Partners, LLC | 392.1k | 0.95% | $46.3M | trimmed -18.5% | 2022 Q1 |
| DF Dent & CO INC | 386.9k | 0.94% | $45.6M | trimmed -17.3% | 2018 Q4 |
| ACK Asset Management LLC (focused) | 375.0k | 0.91% | $44.2M | unchanged | 2025 Q4 |
| Telemark Asset Management, LLC | 375.0k | 0.91% | $44.2M | unchanged | 2016 Q2 |
| American Capital Management INC | 373.9k | 0.91% | $44.1M | trimmed -2.1% | 2025 Q3 |
| BNP Paribas Financial Markets | 333.4k | 0.81% | $39.3M | added +10.9% | 2016 Q2 |
| Harvey Partners, LLC (focused) | 320.0k | 0.78% | $37.8M | added +5.3% | 2025 Q4 |
| BNY Mellon | 302.6k | 0.73% | $35.7M | added +33.4% | 2016 Q2 |
| Clearline Capital LP | 284.2k | 0.69% | $33.5M | trimmed -11.8% | 2025 Q1 |
| Janus Henderson | 265.7k | 0.65% | $31.3M | trimmed -10.6% | 2018 Q2 |
| Victory Capital Management INC | 225.2k | 0.55% | $26.6M | added +190.2% | 2019 Q3 |
| Royal Bank OF Canada | 219.8k | 0.53% | $25.9M | trimmed -10.7% | 2016 Q2 |
| Exchange Traded Concepts, LLC | 215.6k | 0.52% | $25.4M | added +7.8% | 2019 Q4 |
| Bessemer Group INC | 211.0k | 0.51% | $24.9M | added +32.2% | 2020 Q2 |
| Legal & General Group PLC | 209.2k | 0.51% | $24.7M | added +1% | 2016 Q2 |
| Voloridge Investment Management | 198.8k | 0.48% | $23.5M | trimmed -18% | 2024 Q4 |
| Silvercrest Asset Management Group LLC | 197.9k | 0.48% | $23.3M | added +30.6% | 2025 Q4 |
| Greenhouse Funds Lllp (focused) | 196.6k | 0.48% | $23.2M | trimmed -13% | 2025 Q4 |
| WCM Investment Management | 186.8k | 0.45% | $22.0M | trimmed -4.9% | 2024 Q4 |
| Ameriprise Financial INC | 184.3k | 0.45% | $21.7M | trimmed -10% | 2017 Q2 |
| Marshall Wace | 183.7k | 0.45% | $21.7M | added +2389.9% | 2025 Q4 |
| Principal Financial Group INC | 176.2k | 0.43% | $20.8M | added +125.7% | 2018 Q2 |
| Artisan Partners | 176.0k | 0.43% | $20.8M | added +34.7% | 2017 Q2 |
Largest 50 of 318 shown; the full ranked, searchable register is at boothcheck.com/holders/NOVT. 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.