Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
553 institutional managers reported holding IDCC for the quarter ended Mar 31, 2026. Together they hold about 74% of shares outstanding; the top 10 hold 39%. 75 opened new positions; 83 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 3.61M | 10.23% | $1.09B | trimmed -15.4% | ≤2013 |
| Vanguard Group | 2.96M | 8.39% | $893.0M | trimmed -6.6% | ≤2013 |
| T. Rowe Price | 2.27M | 6.44% | $685.7M | added +2.3% | ≤2013 |
| Boston Partners | 977.2k | 2.77% | $294.8M | added +13.2% | 2017 Q3 |
| State Street | 957.7k | 2.71% | $289.0M | trimmed -2.3% | ≤2013 |
| Geode Capital | 852.5k | 2.42% | $257.2M | added +8.2% | ≤2013 |
| Dimensional Fund Advisors | 668.6k | 1.90% | $201.7M | trimmed -2.9% | ≤2013 |
| Disciplined Growth Investors INC /MN | 556.8k | 1.58% | $168.0M | trimmed -8.6% | 2021 Q1 |
| T. Rowe Price Investment Management, INC. | 534.9k | 1.52% | $161.4M | added +9149.2% | 2025 Q3 |
| Ameriprise Financial INC | 527.1k | 1.49% | $159.0M | added +23.4% | ≤2013 |
| Reinhart Partners, LLC. | 422.3k | 1.20% | $127.4M | added +1.1% | 2024 Q3 |
| Driehaus Capital Management LLC | 417.7k | 1.18% | $126.0M | added +11.3% | 2025 Q2 |
| First Trust Advisors LP | 400.6k | 1.14% | $120.9M | trimmed -3.7% | ≤2013 |
| Morgan Stanley | 386.4k | 1.09% | $116.6M | trimmed -11.2% | ≤2013 |
| Congress Asset Management CO | 386.0k | 1.09% | $116.5M | added +9.9% | 2024 Q4 |
| Northern Trust | 328.3k | 0.93% | $99.1M | added +19.3% | ≤2013 |
| Charles Schwab Investment Management | 324.9k | 0.92% | $98.0M | trimmed -9.1% | ≤2013 |
| Fuller & Thaler Asset Management, INC. | 287.1k | 0.81% | $86.6M | added +0.9% | 2023 Q4 |
| BNY Mellon | 267.4k | 0.76% | $80.7M | added +1% | ≤2013 |
| Bank OF America CORP /DE/ | 266.7k | 0.76% | $80.5M | added +31.3% | ≤2013 |
| Two Sigma | 243.4k | 0.69% | $73.4M | added +174.1% | 2015 Q4 |
| FMR (Fidelity) | 230.2k | 0.65% | $69.5M | trimmed -13.2% | ≤2013 |
| Goldman Sachs | 225.4k | 0.64% | $68.0M | added +32.3% | ≤2013 |
| Millennium Management | 223.8k | 0.63% | $67.5M | added +1952.9% | 2021 Q2 |
| Arrowstreet Capital | 219.4k | 0.62% | $66.2M | added +135.7% | 2024 Q4 |
| UBS | 207.3k | 0.59% | $62.6M | added +75.9% | ≤2013 |
| Royal Bank OF Canada | 199.7k | 0.57% | $60.2M | added +375.7% | ≤2013 |
| Invesco | 167.1k | 0.47% | $50.4M | trimmed -62.9% | ≤2013 |
| Jane Street | 161.3k | 0.46% | $48.7M | added +11785.9% | 2018 Q3 |
| Envestnet Asset Management INC | 153.7k | 0.44% | $46.4M | added +10.5% | 2021 Q2 |
| Bessemer Group INC | 149.8k | 0.42% | $45.2M | added +8.2% | 2020 Q2 |
| American Century Companies INC | 142.4k | 0.40% | $43.0M | trimmed -22.7% | 2020 Q3 |
| Baird Financial Group, INC. | 135.9k | 0.39% | $41.0M | added +4.2% | 2023 Q4 |
| BNP Paribas Financial Markets | 133.3k | 0.38% | $40.2M | added +20.8% | ≤2013 |
| Franklin Resources | 127.9k | 0.36% | $38.6M | added +22.5% | 2023 Q2 |
| Wellington Management | 122.9k | 0.35% | $37.1M | added +46% | 2018 Q4 |
| HRT Financial LP | 113.8k | 0.32% | $34.3M | added +176.3% | 2019 Q3 |
| D. E. Shaw | 113.3k | 0.32% | $34.2M | added +514.6% | ≤2013 |
| Capital Management CORP /VA | 112.9k | 0.32% | $34.1M | trimmed -3.2% | 2019 Q4 |
| Jacobs Levy Equity Management, INC | 110.3k | 0.31% | $33.3M | trimmed -14.9% | 2025 Q1 |
| Bragg Financial Advisors, INC | 110.1k | 0.31% | $33.2M | trimmed -19.4% | 2018 Q2 |
| Qube Research & Technologies LTD | 106.7k | 0.30% | $32.2M | added +50.4% | 2020 Q3 |
| Squarepoint Ops LLC | 106.5k | 0.30% | $32.1M | trimmed -41.1% | 2022 Q2 |
| Emerald Advisers, LLC | 104.1k | 0.29% | $31.4M | added +86.3% | 2024 Q1 |
| Aperture Investors, LLC | 103.7k | 0.29% | $31.3M | added +45.5% | 2025 Q3 |
| Nuveen | 92.2k | 0.26% | $27.8M | trimmed -3.5% | 2019 Q2 |
| Rhumbline Advisers | 86.0k | 0.24% | $25.9M | added +9.8% | ≤2013 |
| Wells Fargo & COMPANY/MN | 85.5k | 0.24% | $25.8M | trimmed -37.3% | ≤2013 |
| Principal Financial Group INC | 83.5k | 0.24% | $25.2M | trimmed -42.9% | ≤2013 |
| Thrivent Financial for Lutherans | 80.3k | 0.23% | $24.2M | added +21.5% | 2025 Q3 |
Largest 50 of 553 shown; the full ranked, searchable register is at boothcheck.com/holders/IDCC. 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.