Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
813 institutional managers reported holding RBLX for the quarter ended Mar 31, 2026. Together they hold about 75% of shares outstanding; the top 10 hold 42%. 102 opened new positions; 225 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 65.05M | 9.14% | $3.68B | added +2.4% | 2021 Q1 |
| FMR (Fidelity) | 46.62M | 6.55% | $2.64B | unchanged | 2021 Q1 |
| BlackRock | 39.08M | 5.49% | $2.21B | trimmed -5.9% | 2021 Q1 |
| Capital International Investors | 29.18M | 4.10% | $1.65B | trimmed -8.7% | 2025 Q1 |
| Morgan Stanley | 23.07M | 3.24% | $1.31B | added +11.3% | 2021 Q1 |
| Capital Group (American Funds) | 22.47M | 3.16% | $1.27B | added +85.2% | 2024 Q2 |
| Baillie Gifford | 21.42M | 3.01% | $1.21B | trimmed -0.6% | 2022 Q1 |
| T. Rowe Price | 19.12M | 2.69% | $1.08B | added +390.6% | 2021 Q1 |
| IEQ Capital, LLC | 16.53M | 2.32% | $935.0M | trimmed -4.1% | 2021 Q1 |
| State Street | 14.24M | 2.00% | $805.2M | added +3.1% | 2021 Q4 |
| Geode Capital | 12.27M | 1.72% | $693.8M | unchanged | 2022 Q2 |
| Two Sigma | 12.04M | 1.69% | $681.2M | added +300.5% | 2022 Q1 |
| AQR Capital | 8.28M | 1.16% | $468.3M | trimmed -19.7% | 2023 Q2 |
| Temasek Holdings | 7.78M | 1.09% | $439.9M | unchanged | 2021 Q1 |
| Renaissance Technologies | 7.13M | 1.00% | $403.1M | added +7.5% | 2021 Q2 |
| SRS Investment Management, LLC (focused) | 6.60M | 0.93% | $373.4M | added +124.7% | 2025 Q4 |
| Goldman Sachs | 6.09M | 0.86% | $344.7M | added +55.2% | 2021 Q1 |
| ARK Investment Management | 5.90M | 0.83% | $333.5M | added +22% | 2021 Q1 |
| ValueAct (focused) | 5.85M | 0.82% | $330.8M | trimmed -2.1% | 2023 Q3 |
| Artisan Partners | 5.81M | 0.82% | $328.7M | added +153.6% | 2025 Q1 |
| Amundi | 5.77M | 0.81% | $326.6M | added +83.7% | 2021 Q3 |
| FIL LTD | 5.67M | 0.80% | $320.4M | added +4666.9% | 2025 Q2 |
| MFS Investment Management | 5.31M | 0.75% | $300.5M | trimmed -8.3% | 2024 Q4 |
| UBS | 4.72M | 0.66% | $266.8M | trimmed -5.4% | 2021 Q1 |
| D. E. Shaw | 4.51M | 0.63% | $255.4M | trimmed -24.9% | 2021 Q2 |
| Sumitomo Mitsui Trust Group, INC. | 4.45M | 0.63% | $251.8M | added +10.3% | 2021 Q1 |
| BNP Paribas Financial Markets | 3.77M | 0.53% | $213.1M | trimmed -1.4% | 2024 Q4 |
| Northern Trust | 3.72M | 0.52% | $210.2M | added +42% | 2021 Q1 |
| Whale Rock Capital (focused) | 3.53M | 0.50% | $199.8M | trimmed -14% | 2024 Q3 |
| Franklin Resources | 3.39M | 0.48% | $191.7M | trimmed -44.1% | 2021 Q1 |
| Amova Asset Management Americas, INC. | 3.24M | 0.46% | $183.2M | added +17% | 2021 Q1 |
| Sands Capital | 2.73M | 0.38% | $154.2M | trimmed -14.3% | 2024 Q3 |
| Legal & General Group PLC | 2.69M | 0.38% | $152.4M | trimmed -1% | 2021 Q4 |
| Contour Asset Management LLC (focused) | 2.50M | 0.35% | $141.5M | added +390.4% | 2025 Q3 |
| Charles Schwab Investment Management | 2.39M | 0.34% | $135.4M | added +5.5% | 2021 Q3 |
| Bank OF America CORP /DE/ | 2.35M | 0.33% | $133.1M | trimmed -28.8% | 2021 Q1 |
| Qube Research & Technologies LTD | 2.28M | 0.32% | $129.1M | trimmed -48.5% | 2023 Q1 |
| Worldquant Millennium Advisors LLC | 2.27M | 0.32% | $128.5M | added +5.3% | 2023 Q2 |
| Wellington Management | 2.27M | 0.32% | $128.4M | added +28.6% | 2021 Q3 |
| Clearbridge Investments, LLC | 2.17M | 0.30% | $122.8M | added +96% | 2024 Q4 |
| Marshall Wace | 2.16M | 0.30% | $122.4M | trimmed -51.8% | 2024 Q2 |
| Foxhaven Asset Management, LP (focused) | 2.13M | 0.30% | $120.5M | trimmed -16.2% | 2024 Q3 |
| Nuveen | 2.07M | 0.29% | $117.0M | trimmed -58.3% | 2021 Q4 |
| Deutsche Bank AG\ | 1.95M | 0.27% | $110.2M | trimmed -3.4% | 2021 Q1 |
| Raymond James Financial INC | 1.93M | 0.27% | $109.1M | added +18.6% | 2021 Q1 |
| Swiss National Bank | 1.73M | 0.24% | $97.8M | added +8.5% | 2022 Q2 |
| Robeco Institutional Asset Management B.v. | 1.69M | 0.24% | $95.8M | added +64.6% | 2022 Q2 |
| BNY Mellon | 1.69M | 0.24% | $95.7M | trimmed -5.3% | 2021 Q1 |
| Gilder Gagnon Howe & CO LLC | 1.68M | 0.24% | $95.1M | trimmed -1.3% | 2021 Q1 |
| Royal Bank OF Canada | 1.68M | 0.24% | $95.0M | trimmed -8.3% | 2021 Q1 |
Largest 50 of 813 shown; the full ranked, searchable register is at boothcheck.com/holders/RBLX. 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.