Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
133 institutional managers reported holding STVN for the quarter ended Mar 31, 2026. Together they hold about 16% of shares outstanding; the top 10 hold 11%. 30 opened new positions; 36 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Conestoga Capital Advisors, LLC | 8.49M | 3.11% | $117.3M | added +7.6% | 2022 Q2 |
| Neuberger Berman Group LLC | 4.48M | 1.64% | $61.8M | trimmed -6.5% | 2022 Q3 |
| TimesSquare Capital Management, LLC | 3.49M | 1.28% | $48.2M | unchanged | 2023 Q2 |
| T. Rowe Price Investment Management, INC. | 3.22M | 1.18% | $44.5M | added +469.1% | 2024 Q1 |
| Bamco INC /NY/ | 2.50M | 0.92% | $34.5M | added +24.9% | 2021 Q4 |
| Artisan Partners | 2.29M | 0.84% | $31.6M | trimmed -2.5% | 2023 Q3 |
| Morgan Stanley | 1.32M | 0.48% | $18.2M | added +333.1% | 2021 Q3 |
| Ranger Investment Management, L.p. | 1.27M | 0.47% | $17.5M | trimmed -0.6% | 2024 Q4 |
| ArrowMark Colorado Holdings LLC | 1.05M | 0.38% | $14.4M | trimmed -13.9% | 2024 Q4 |
| Invesco | 851.6k | 0.31% | $11.8M | trimmed -1.1% | 2025 Q1 |
| Deutsche Bank AG\ | 849.2k | 0.31% | $11.7M | trimmed -2.1% | 2021 Q3 |
| Royce & Associates | 841.3k | 0.31% | $11.6M | added +70.6% | 2022 Q1 |
| Nicholas Company, INC. | 744.2k | 0.27% | $10.3M | unchanged | 2021 Q4 |
| Riverbridge Partners LLC | 673.1k | 0.25% | $9.3M | trimmed -5.9% | 2023 Q3 |
| Mutual OF America Capital Management LLC | 646.0k | 0.24% | $8.9M | unchanged | 2024 Q4 |
| Cooper Investors PTY LTD (focused) | 640.2k | 0.23% | $8.8M | trimmed -7.9% | 2021 Q4 |
| Qube Research & Technologies LTD | 612.9k | 0.23% | $8.5M | added +4189.9% | 2025 Q4 |
| Sands Capital | 497.3k | 0.18% | $6.9M | added +0.9% | 2023 Q2 |
| Point72 | 491.4k | 0.18% | $6.8M | opened | 2025 Q3 |
| Peregrine Capital Management LLC | 457.1k | 0.17% | $6.3M | trimmed -4.6% | 2024 Q3 |
| NEW York State Common Retirement Fund | 433.5k | 0.16% | $6.0M | unchanged | 2023 Q3 |
| Citadel Advisors | 431.8k | 0.16% | $6.0M | added +548.7% | 2022 Q4 |
| Royal Bank OF Canada | 421.7k | 0.15% | $5.8M | added +15.8% | 2022 Q1 |
| Roubaix Capital, LLC (focused) | 385.3k | 0.14% | $5.3M | added +96.6% | 2025 Q4 |
| Ameriprise Financial INC | 375.4k | 0.14% | $5.2M | trimmed -13.3% | 2021 Q3 |
| BlackRock | 372.0k | 0.14% | $5.1M | added +1.8% | 2021 Q3 |
| Credit Agricole S A | 371.5k | 0.14% | $5.1M | trimmed -2.2% | 2025 Q3 |
| Balance Capital Partners L.p. (focused) | 330.5k | 0.12% | $4.6M | opened | 2026 Q1 |
| Balyasny Asset Management | 327.7k | 0.12% | $4.5M | added +191.9% | 2023 Q3 |
| Millennium Management | 315.2k | 0.12% | $4.4M | added +2184.7% | 2025 Q4 |
| Rhenman & Partners Asset Management AB | 274.7k | 0.10% | $3.8M | added +86.8% | 2025 Q3 |
| SEI Investments CO | 266.2k | 0.10% | $3.7M | added +4% | 2022 Q2 |
| Raymond James Financial INC | 263.3k | 0.10% | $3.6M | trimmed -49.9% | 2021 Q3 |
| Russell Investments Group, LTD. | 235.2k | 0.09% | $3.2M | added +3.1% | 2022 Q3 |
| D. E. Shaw | 179.1k | 0.07% | $2.5M | added +1367.8% | 2023 Q1 |
| Advisors Capital Management, LLC | 175.9k | 0.06% | $2.4M | trimmed -2% | 2021 Q3 |
| Montanaro Asset Management LTD (focused) | 175.0k | 0.06% | $2.4M | unchanged | 2024 Q1 |
| Van Berkom & Associates INC. | 171.0k | 0.06% | $2.4M | added +2944.2% | 2024 Q4 |
| Massar Capital Management, LP | 168.4k | 0.06% | $2.3M | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 163.1k | 0.06% | $2.3M | trimmed -82.8% | 2021 Q3 |
| CenterBook Partners LP | 162.2k | 0.06% | $2.2M | trimmed -35% | 2024 Q2 |
| First Eagle Investment Management | 157.5k | 0.06% | $2.2M | opened | 2026 Q1 |
| Pembroke Management, LTD | 150.8k | 0.06% | $2.1M | trimmed -88.1% | 2022 Q3 |
| Envestnet Asset Management INC | 137.4k | 0.05% | $1.9M | trimmed -2.8% | 2021 Q3 |
| Kornitzer Capital Management INC /KS | 135.0k | 0.05% | $1.9M | opened | 2026 Q1 |
| Marshall Wace | 134.2k | 0.05% | $1.9M | opened | 2026 Q1 |
| Lazard Asset Management LLC | 127.2k | 0.05% | $1.8M | opened | 2021 Q3 |
| Schwartz Investment Counsel INC | 126.3k | 0.05% | $1.7M | unchanged | 2022 Q1 |
| Blair William & CO/IL | 122.0k | 0.04% | $1.7M | trimmed -15.9% | 2024 Q2 |
| State Street | 113.6k | 0.04% | $1.6M | added +17% | 2022 Q2 |
Largest 50 of 133 shown; the full ranked, searchable register is at boothcheck.com/holders/STVN. 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.