Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
404 institutional managers reported holding RLI for the quarter ended Mar 31, 2026. Together they hold about 87% of shares outstanding; the top 10 hold 51%. 47 opened new positions; 72 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 9.63M | 10.44% | $549.3M | added +1.6% | ≤2013 |
| State Street | 8.99M | 9.75% | $512.7M | added +1.2% | ≤2013 |
| BlackRock | 8.07M | 8.76% | $460.6M | unchanged | ≤2013 |
| Kayne Anderson Rudnick Investment Management LLC | 7.00M | 7.60% | $399.6M | trimmed -4% | ≤2013 |
| Wasatch Advisors LP | 2.58M | 2.80% | $147.2M | added +33.1% | 2025 Q2 |
| Geode Capital | 2.49M | 2.71% | $142.3M | added +13.8% | ≤2013 |
| Markel Group | 2.39M | 2.60% | $136.6M | unchanged | ≤2013 |
| Dimensional Fund Advisors | 1.92M | 2.08% | $109.6M | added +1.1% | ≤2013 |
| Invesco | 1.79M | 1.94% | $102.2M | added +58.3% | ≤2013 |
| Maren Capital LLC (focused) | 1.79M | 1.94% | $102.1M | added +5.2% | 2023 Q4 |
| Port Capital LLC | 1.39M | 1.50% | $79.2M | trimmed -1.3% | 2017 Q4 |
| Van Berkom & Associates INC. | 1.34M | 1.46% | $76.6M | added +5.8% | ≤2013 |
| Morgan Stanley | 1.32M | 1.43% | $75.1M | added +21.6% | ≤2013 |
| T. Rowe Price Investment Management, INC. | 1.17M | 1.27% | $67.0M | added +375.4% | 2023 Q4 |
| Charles Schwab Investment Management | 1.13M | 1.22% | $64.4M | added +1.1% | ≤2013 |
| Two Sigma | 936.5k | 1.02% | $53.4M | added +117.4% | 2022 Q1 |
| UBS | 915.9k | 0.99% | $52.3M | added +4.8% | ≤2013 |
| Ariel Investments, LLC | 872.0k | 0.95% | $49.8M | added +133.7% | 2025 Q4 |
| Northern Trust | 866.7k | 0.94% | $49.4M | unchanged | ≤2013 |
| Royce & Associates | 864.4k | 0.94% | $49.3M | added +47.4% | ≤2013 |
| BNY Mellon | 823.9k | 0.89% | $47.0M | unchanged | ≤2013 |
| Bragg Financial Advisors, INC | 811.1k | 0.88% | $46.3M | added +3.9% | ≤2013 |
| Victory Capital Management INC | 808.7k | 0.88% | $46.1M | added +9.3% | 2014 Q4 |
| Gotham Asset Management | 794.2k | 0.86% | $45.3M | added +27.4% | 2022 Q4 |
| AQR Capital | 731.2k | 0.79% | $41.7M | added +32.4% | ≤2013 |
| Wells Fargo & COMPANY/MN | 705.5k | 0.77% | $40.3M | unchanged | ≤2013 |
| First Trust Advisors LP | 688.3k | 0.75% | $39.3M | added +311.6% | 2021 Q1 |
| Polar Capital Holdings PLC | 687.5k | 0.75% | $39.2M | unchanged | ≤2013 |
| Global Alpha Capital Management LTD. | 588.5k | 0.64% | $33.6M | added +35.8% | 2015 Q2 |
| Arrowstreet Capital | 520.4k | 0.56% | $29.7M | added +6.9% | 2024 Q3 |
| Wellington Management | 516.7k | 0.56% | $29.5M | opened | 2024 Q3 |
| Champlain Investment Partners, LLC | 464.4k | 0.50% | $26.5M | trimmed -20.7% | 2025 Q1 |
| ProShare Advisors LLC | 437.0k | 0.47% | $24.9M | trimmed -18.5% | ≤2013 |
| Raymond James Financial INC | 429.4k | 0.47% | $24.5M | added +20.2% | 2015 Q4 |
| Citadel Advisors | 421.6k | 0.46% | $24.1M | trimmed -14.4% | 2019 Q2 |
| Janus Henderson | 416.6k | 0.45% | $23.8M | added +12% | 2015 Q2 |
| Eulav Asset Management | 414.0k | 0.45% | $23.6M | unchanged | ≤2013 |
| Palisade Capital Management, LP | 406.8k | 0.44% | $23.2M | trimmed -6.3% | 2014 Q1 |
| Confluence Investment Management LLC | 382.1k | 0.41% | $21.8M | added +1612.2% | 2025 Q1 |
| Argent Capital Management LLC | 374.4k | 0.41% | $21.4M | added +233.6% | 2019 Q4 |
| Bank OF Montreal /CAN/ | 358.2k | 0.39% | $20.4M | trimmed -2.8% | ≤2013 |
| Snyder Capital Management L P | 355.2k | 0.39% | $20.3M | trimmed -7.1% | ≤2013 |
| SEI Investments CO | 320.1k | 0.35% | $18.3M | added +24.9% | 2014 Q4 |
| Bank OF America CORP /DE/ | 282.7k | 0.31% | $16.1M | added +37% | ≤2013 |
| Nepsis INC. (focused) | 282.7k | 0.31% | $16.1M | trimmed -2.3% | 2023 Q4 |
| Vaughan David Investments LLC/IL | 282.5k | 0.31% | $16.1M | added +1.1% | ≤2013 |
| Principal Financial Group INC | 281.1k | 0.30% | $16.0M | added +3.9% | ≤2013 |
| Rhumbline Advisers | 250.9k | 0.27% | $14.3M | added +1.7% | ≤2013 |
| Goldman Sachs | 242.8k | 0.26% | $13.9M | trimmed -34.1% | ≤2013 |
| Stifel Financial CORP | 238.3k | 0.26% | $13.6M | added +132.9% | ≤2013 |
Largest 50 of 404 shown; the full ranked, searchable register is at boothcheck.com/holders/RLI. 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.