Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
325 institutional managers reported holding BILL for the quarter ended Mar 31, 2026. Together they hold about 90% of shares outstanding; the top 10 hold 49%. 58 opened new positions; 89 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 10.37M | 9.20% | $397.2M | added +1.6% | 2019 Q4 |
| ER Collective Holdings, LLC (focused) | 8.52M | 7.56% | $326.4M | unchanged | 2025 Q4 |
| BlackRock | 8.36M | 7.42% | $320.2M | added +4% | 2019 Q4 |
| Starboard Value (focused) | 7.02M | 6.24% | $269.2M | unchanged | 2025 Q3 |
| Wellington Management | 3.86M | 3.43% | $148.0M | added +33.8% | 2021 Q1 |
| Senvest Management, LLC (focused) | 3.84M | 3.40% | $147.0M | added +49% | 2024 Q4 |
| Contour Asset Management LLC (focused) | 3.34M | 2.97% | $128.1M | trimmed -29.1% | 2025 Q1 |
| Greenhouse Funds Lllp (focused) | 3.19M | 2.83% | $122.3M | added +8.7% | 2022 Q4 |
| State Street | 3.10M | 2.75% | $118.7M | added +1.8% | 2020 Q1 |
| Dimensional Fund Advisors | 3.09M | 2.74% | $118.4M | added +4.3% | 2020 Q3 |
| Ameriprise Financial INC | 2.83M | 2.52% | $108.6M | trimmed -11.6% | 2019 Q4 |
| Point72 | 2.16M | 1.92% | $82.9M | trimmed -47.9% | 2019 Q4 |
| Fuller & Thaler Asset Management, INC. | 2.00M | 1.77% | $76.5M | opened | 2026 Q1 |
| T. Rowe Price | 1.98M | 1.76% | $75.8M | trimmed -32.5% | 2019 Q4 |
| Nomura Asset Management International INC. | 1.73M | 1.53% | $66.2M | added +3475.1% | 2021 Q2 |
| Parnassus Investments | 1.66M | 1.48% | $63.7M | added +13.6% | 2025 Q1 |
| UBS | 1.62M | 1.44% | $62.2M | trimmed -46.9% | 2019 Q4 |
| Geode Capital | 1.60M | 1.42% | $61.3M | added +3.2% | 2020 Q1 |
| Royal Bank OF Canada | 1.53M | 1.36% | $58.7M | trimmed -6.3% | 2019 Q4 |
| Millennium Management | 1.44M | 1.28% | $55.1M | added +65.3% | 2020 Q2 |
| Citadel Advisors | 1.35M | 1.20% | $51.7M | trimmed -21.2% | 2019 Q4 |
| Bank OF America CORP /DE/ | 1.16M | 1.03% | $44.4M | trimmed -44.2% | 2019 Q4 |
| Invenomic Capital Management LP | 1.03M | 0.92% | $39.6M | added +45.8% | 2024 Q2 |
| FMR (Fidelity) | 927.9k | 0.82% | $35.6M | trimmed -12.1% | 2019 Q4 |
| LPL Financial LLC | 878.9k | 0.78% | $33.7M | added +48.6% | 2020 Q3 |
| Marshall Wace | 852.8k | 0.76% | $32.7M | trimmed -71.2% | 2019 Q4 |
| Mangrove Partners IM, LLC | 839.0k | 0.74% | $32.2M | added +28% | 2025 Q3 |
| Charles Schwab Investment Management | 784.3k | 0.70% | $30.1M | trimmed -5.5% | 2020 Q2 |
| Northern Trust | 668.1k | 0.59% | $25.6M | trimmed -0.7% | 2019 Q4 |
| Morgan Stanley | 653.9k | 0.58% | $25.1M | trimmed -65.5% | 2019 Q4 |
| Light Street Capital Management, LLC (focused) | 625.0k | 0.56% | $23.9M | trimmed -28.8% | 2023 Q4 |
| BNY Mellon | 607.7k | 0.54% | $23.3M | trimmed -9.9% | 2020 Q1 |
| Goldman Sachs | 598.8k | 0.53% | $22.9M | added +261.5% | 2019 Q4 |
| Balyasny Asset Management | 570.5k | 0.51% | $21.9M | added +12% | 2025 Q3 |
| Susquehanna International Group | 563.5k | 0.50% | $21.6M | added +30% | 2019 Q4 |
| Jane Street | 501.3k | 0.45% | $19.2M | added +26.1% | 2020 Q3 |
| Retirement Systems of Alabama | 491.4k | 0.44% | $18.8M | unchanged | 2024 Q4 |
| Barclays PLC | 441.6k | 0.39% | $16.9M | added +8.6% | 2022 Q1 |
| Verition Fund Management | 436.2k | 0.39% | $16.7M | added +53% | 2024 Q2 |
| CPP Investment Board | 425.6k | 0.38% | $16.3M | added +64.5% | 2022 Q1 |
| PAR Capital Management INC (focused) | 400.0k | 0.35% | $15.3M | added +23.1% | 2025 Q3 |
| Armistice Capital, LLC | 374.9k | 0.33% | $14.4M | added +38.1% | 2023 Q4 |
| D. E. Shaw | 366.2k | 0.33% | $14.0M | added +573.4% | 2020 Q1 |
| LOS Angeles Capital Management LLC | 357.1k | 0.32% | $13.7M | added +99642.5% | 2025 Q4 |
| Quantinno Capital Management LP | 357.0k | 0.32% | $13.7M | added +231.1% | 2023 Q3 |
| Raymond James Financial INC | 351.4k | 0.31% | $13.5M | trimmed -5.1% | 2019 Q4 |
| Loomis Sayles & CO L P | 339.3k | 0.30% | $13.0M | added +13.5% | 2025 Q3 |
| Barington Companies Management, LLC (focused) | 313.8k | 0.28% | $12.0M | trimmed -19.5% | 2025 Q3 |
| Bank OF Montreal /CAN/ | 295.6k | 0.26% | $11.3M | trimmed -8.1% | 2020 Q1 |
| Freestone Grove Partners LP | 294.5k | 0.26% | $11.3M | added +153.5% | 2025 Q4 |
Largest 50 of 325 shown; the full ranked, searchable register is at boothcheck.com/holders/BILL. 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.