Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
243 institutional managers reported holding ICHR for the quarter ended Mar 31, 2026. Together they hold about 93% of shares outstanding; the top 10 hold 54%. 90 opened new positions; 21 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 5.23M | 15.12% | $243.7M | trimmed -1.1% | 2017 Q1 |
| Vanguard Group | 3.44M | 9.94% | $160.2M | added +3.2% | 2017 Q1 |
| Invesco | 1.85M | 5.34% | $86.1M | trimmed -38.8% | 2017 Q4 |
| Barrow Hanley Mewhinney & Strauss LLC | 1.74M | 5.03% | $81.1M | trimmed -11.1% | 2025 Q2 |
| D. E. Shaw | 1.51M | 4.37% | $70.4M | added +7.5% | 2022 Q2 |
| State Street | 1.27M | 3.68% | $59.2M | trimmed -1% | 2017 Q1 |
| Nuveen | 958.3k | 2.77% | $44.6M | trimmed -15.7% | 2019 Q2 |
| Dimensional Fund Advisors | 921.9k | 2.66% | $42.9M | trimmed -34.8% | 2018 Q1 |
| Geode Capital | 870.3k | 2.52% | $40.5M | added +3.9% | 2016 Q4 |
| Royce & Associates | 849.3k | 2.45% | $39.5M | trimmed -41.4% | 2016 Q4 |
| Millennium Management | 837.4k | 2.42% | $39.0M | added +66.6% | 2024 Q2 |
| Kennedy Capital Management LLC | 811.9k | 2.35% | $37.8M | trimmed -9% | 2016 Q4 |
| Wellington Management | 718.8k | 2.08% | $33.5M | trimmed -34.9% | 2018 Q1 |
| Marshall Wace | 688.8k | 1.99% | $32.1M | opened | 2026 Q1 |
| Deutsche Bank AG\ | 671.4k | 1.94% | $31.3M | added +19.6% | 2017 Q1 |
| Charles Schwab Investment Management | 633.8k | 1.83% | $29.5M | added +2.6% | 2017 Q1 |
| Ameriprise Financial INC | 593.0k | 1.71% | $27.6M | added +30.1% | 2016 Q4 |
| Morgan Stanley | 509.6k | 1.47% | $23.7M | trimmed -41.1% | 2017 Q1 |
| Harvey Partners, LLC (focused) | 469.2k | 1.36% | $21.8M | trimmed -2.8% | 2025 Q3 |
| Pinnacle Associates LTD | 408.3k | 1.18% | $19.0M | trimmed -8.6% | 2021 Q1 |
| Two Sigma | 349.9k | 1.01% | $16.3M | added +385.4% | 2023 Q1 |
| Northern Trust | 331.2k | 0.96% | $15.4M | added +6.7% | 2017 Q1 |
| Goldman Sachs | 309.0k | 0.89% | $14.4M | trimmed -43.6% | 2016 Q4 |
| Driehaus Capital Management LLC | 298.3k | 0.86% | $13.9M | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 287.5k | 0.83% | $13.4M | trimmed -46.4% | 2017 Q1 |
| Axiom Investors LLC /DE | 265.6k | 0.77% | $12.4M | opened | 2026 Q1 |
| Citadel Advisors | 225.2k | 0.65% | $10.5M | added +815.5% | 2019 Q4 |
| Heartland Advisors INC | 200.0k | 0.58% | $9.3M | trimmed -33.3% | 2025 Q4 |
| BNY Mellon | 196.5k | 0.57% | $9.1M | trimmed -5.7% | 2017 Q1 |
| Next Century Growth Investors LLC | 187.0k | 0.54% | $8.7M | opened | 2026 Q1 |
| First Sabrepoint Capital Management LP (focused) | 170.0k | 0.49% | $7.9M | opened | 2026 Q1 |
| Principal Financial Group INC | 167.3k | 0.48% | $7.8M | added +2.1% | 2017 Q4 |
| Raymond James Financial INC | 165.6k | 0.48% | $7.7M | added +4.7% | 2024 Q4 |
| UBS | 164.8k | 0.48% | $7.7M | added +28.8% | 2016 Q4 |
| Rice Hall James & Associates, LLC | 154.4k | 0.45% | $7.2M | trimmed -24.8% | 2025 Q3 |
| Russell Investments Group, LTD. | 143.1k | 0.41% | $6.7M | added +4556.3% | 2023 Q4 |
| Connor, Clark & Lunn Investment Management LTD. | 137.7k | 0.40% | $6.4M | added +23.6% | 2022 Q4 |
| Public Sector Pension Investment Board | 123.2k | 0.36% | $5.7M | added +3.6% | 2018 Q3 |
| Franklin Resources | 116.2k | 0.34% | $5.4M | trimmed -46.1% | 2024 Q1 |
| SEI Investments CO | 113.5k | 0.33% | $5.3M | added +61.7% | 2024 Q2 |
| Wells Fargo & COMPANY/MN | 105.6k | 0.30% | $4.9M | added +165.6% | 2017 Q1 |
| Linden Thomas Advisory Services, LLC | 102.7k | 0.30% | $4.8M | added +102.6% | 2023 Q2 |
| 4D Advisors, LLC (focused) | 100.0k | 0.29% | $4.7M | opened | 2026 Q1 |
| Rhumbline Advisers | 96.5k | 0.28% | $4.5M | unchanged | 2017 Q2 |
| SG Capital Management LLC | 96.5k | 0.28% | $4.5M | opened | 2026 Q1 |
| Osaic Holdings, INC. | 95.6k | 0.28% | $4.4M | added +3347.2% | 2020 Q1 |
| Point72 | 90.3k | 0.26% | $4.2M | opened | 2024 Q1 |
| AQR Capital | 84.9k | 0.24% | $4.0M | trimmed -36.7% | 2018 Q1 |
| Legal & General Group PLC | 74.5k | 0.21% | $3.5M | trimmed -12.8% | 2017 Q1 |
| Swiss National Bank | 67.7k | 0.20% | $3.2M | unchanged | 2017 Q4 |
Largest 50 of 243 shown; the full ranked, searchable register is at boothcheck.com/holders/ICHR. 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.