Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
517 institutional managers reported holding IOT for the quarter ended Mar 31, 2026. Together they hold about 62% of shares outstanding; the top 10 hold 39%. 91 opened new positions; 104 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Baillie Gifford | 57.52M | 9.82% | $1.82B | added +20.7% | 2023 Q1 |
| T. Rowe Price | 36.60M | 6.25% | $1.16B | added +154.7% | 2022 Q3 |
| Vanguard Group | 34.53M | 5.89% | $1.09B | added +4.1% | 2021 Q4 |
| FMR (Fidelity) | 23.77M | 4.06% | $753.6M | added +46.8% | 2021 Q4 |
| BlackRock | 22.33M | 3.81% | $707.9M | trimmed -10.9% | 2016 Q1 |
| Sands Capital | 16.22M | 2.77% | $514.1M | trimmed -17.2% | 2021 Q4 |
| Brown Advisory INC | 10.10M | 1.72% | $320.1M | trimmed -9.9% | 2025 Q3 |
| Goldman Sachs | 9.70M | 1.66% | $307.5M | trimmed -18.3% | 2021 Q4 |
| Wellington Management | 8.51M | 1.45% | $269.9M | added +35.8% | 2024 Q1 |
| Morgan Stanley | 8.42M | 1.44% | $266.8M | trimmed -55.9% | 2021 Q4 |
| State Street | 7.26M | 1.24% | $230.3M | added +5% | 2022 Q1 |
| Geode Capital | 6.58M | 1.12% | $208.6M | added +6.2% | 2022 Q1 |
| a16z Perennial Management, L.p. | 5.99M | 1.02% | $189.9M | added +260.4% | 2023 Q4 |
| Bamco INC /NY/ | 5.12M | 0.87% | $162.3M | added +24.3% | 2024 Q2 |
| Westfield Capital Management CO LP | 5.07M | 0.87% | $160.8M | added +28.3% | 2021 Q4 |
| UBS | 4.52M | 0.77% | $143.3M | added +42.9% | 2017 Q3 |
| 1832 Asset Management L.p. | 4.33M | 0.74% | $137.1M | added +54.3% | 2022 Q4 |
| Jordan Park Trust CO LLC (focused) | 3.83M | 0.66% | $121.5M | unchanged | 2024 Q4 |
| Charles Schwab Investment Management | 3.54M | 0.60% | $112.3M | added +8.4% | 2022 Q1 |
| Jane Street | 3.35M | 0.57% | $106.2M | added +24301.5% | 2025 Q3 |
| Spyglass Capital Management LLC (focused) | 2.95M | 0.50% | $93.4M | added +25.5% | 2025 Q3 |
| Nordea Investment Management AB | 2.89M | 0.49% | $91.5M | added +16.9% | 2024 Q1 |
| Bank OF America CORP /DE/ | 2.71M | 0.46% | $85.9M | added +41.5% | 2019 Q2 |
| Citadel Advisors | 2.52M | 0.43% | $79.8M | added +132.5% | 2022 Q1 |
| Northern Trust | 2.16M | 0.37% | $68.5M | added +3% | 2022 Q1 |
| Freestone Grove Partners LP | 2.16M | 0.37% | $68.4M | added +107.9% | 2025 Q2 |
| Legal & General Group PLC | 2.14M | 0.36% | $67.8M | added +18.6% | 2022 Q2 |
| American Century Companies INC | 2.05M | 0.35% | $64.9M | added +31.1% | 2025 Q2 |
| General Catalyst Group Management, LLC (focused) | 2.00M | 0.34% | $63.4M | unchanged | 2021 Q4 |
| Voya Investment Management LLC | 1.92M | 0.33% | $61.0M | trimmed -43.1% | 2022 Q4 |
| AllianceBernstein | 1.76M | 0.30% | $55.9M | unchanged | 2021 Q4 |
| Bessemer Group INC | 1.68M | 0.29% | $53.1M | added +3.3% | 2024 Q4 |
| Raymond James Financial INC | 1.65M | 0.28% | $52.4M | added +484.8% | 2022 Q4 |
| Squarepoint Ops LLC | 1.59M | 0.27% | $50.4M | trimmed -61.2% | 2023 Q1 |
| Mitsubishi UFJ Asset Management CO., LTD. | 1.57M | 0.27% | $49.6M | added +7.8% | 2023 Q1 |
| First Trust Advisors LP | 1.49M | 0.26% | $47.4M | added +64.3% | 2022 Q4 |
| Deutsche Bank AG\ | 1.44M | 0.25% | $45.6M | added +13.1% | 2022 Q4 |
| Summit Partners Public Asset Management, LLC | 1.29M | 0.22% | $40.8M | trimmed -16.6% | 2022 Q1 |
| TimesSquare Capital Management, LLC | 1.28M | 0.22% | $40.6M | trimmed -3% | 2021 Q4 |
| Millennium Management | 1.26M | 0.21% | $40.0M | added +9343.4% | 2020 Q3 |
| Royal Bank OF Canada | 1.26M | 0.21% | $39.8M | added +2.2% | 2021 Q4 |
| Cosmic Management, LLC (focused) | 1.26M | 0.21% | $39.8M | unchanged | 2025 Q4 |
| Arrowstreet Capital | 1.25M | 0.21% | $39.8M | added +77.1% | 2023 Q2 |
| Amundi | 1.14M | 0.19% | $36.1M | trimmed -47.3% | 2022 Q4 |
| SEI Investments CO | 1.12M | 0.19% | $35.6M | added +25.6% | 2024 Q2 |
| BNY Mellon | 1.11M | 0.19% | $35.2M | added +0.9% | 2022 Q1 |
| Janus Henderson | 1.08M | 0.18% | $34.3M | trimmed -6.8% | 2024 Q2 |
| Swiss National Bank | 1.02M | 0.17% | $32.2M | added +6.6% | 2024 Q1 |
| Invesco | 930.7k | 0.16% | $29.5M | added +4.7% | 2022 Q3 |
| USS Investment Management LTD | 890.7k | 0.15% | $28.2M | opened | 2026 Q1 |
Largest 50 of 517 shown; the full ranked, searchable register is at boothcheck.com/holders/IOT. 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.