Who owns Roblox Corporation (RBLX)
Which tracked institutional funds hold RBLX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RBLX company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on RBLX is one-sided between 2025-Q4 and 2026-Q1: 104 added or opened and 448 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
RBLX’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes RBLX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in RBLX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 832 tracked filers holding RBLX, 394 increased or opened the position and 544 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in RBLX between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 40
- VANGUARD PORTFOLIO MANAGEMENT LLC$1.7B
- VANGUARD CAPITAL MANAGEMENT LLC$1.6B
- VANGUARD FIDUCIARY TRUST CO$236M
- VANGUARD ASSET MANAGEMENT, Ltd$60M
- Spyglass Capital Management LLC$44M
- HMI Capital Management, L.P.$43M
Full exits 81
- VANGUARD GROUP INC$5.1B
- TWO SIGMA ADVISERS, LP$527M
- SCOPUS ASSET MANAGEMENT, L.P.$61M
- Thrivent Financial for Lutherans$52M
- Holocene Advisors, LP$52M
- WESTFIELD CAPITAL MANAGEMENT CO LP$37M
Largest adds
- PRICE T ROWE ASSOCIATES INC /MD/$766M
- TWO SIGMA INVESTMENTS, LP$438M
- FIL Ltd$311M
- Capital World Investors$287M
- Artisan Partners Limited Partnership$143M
- SRS Investment Management, LLC$135M
Largest trims
- BlackRock, Inc.$1.6B
- JPMORGAN CHASE & CO$1.2B
- FMR LLC$1.1B
- Capital International Investors$940M
- BAILLIE GIFFORD & CO$534M
- IEQ CAPITAL, LLC$462M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 46,609,433 | $2.6B | 7.4% | 2026-Q1 |
| BlackRock, Inc. trimmed | 31,480,139 | $1.8B | 5.0% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 30,600,996 | $1.7B | 4.9% | 2026-Q1 |
| Capital International Investors trimmed | 29,177,063 | $1.6B | 4.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 28,552,688 | $1.6B | 4.6% | 2026-Q1 |
| MORGAN STANLEY added | 23,073,205 | $1.3B | 3.7% | 2026-Q1 |
| Capital World Investors added | 22,473,240 | $1.3B | 3.6% | 2026-Q1 |
| BAILLIE GIFFORD & CO trimmed | 21,423,012 | $1.2B | 3.4% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 19,117,369 | $1.1B | 3.1% | 2026-Q1 |
| IEQ CAPITAL, LLC trimmed | 16,530,247 | $935M | 2.6% | 2026-Q1 |
| STATE STREET CORP added | 14,235,590 | $805M | 2.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 12,266,000 | $692M | 2.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 12,043,968 | $681M | 1.9% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 8,278,297 | $450M | 1.3% | 2026-Q1 |
| Temasek Holdings (Private) Ltd | 7,777,760 | $440M | 1.2% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 7,126,134 | $403M | 1.1% | 2026-Q1 |
| SRS Investment Management, LLC added | 6,601,674 | $373M | 1.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 6,737,519 | $350M | 1.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 6,094,792 | $345M | 1.0% | 2026-Q1 |
| ARK Investment Management LLC added | 5,896,106 | $333M | 0.9% | 2026-Q1 |
| ValueAct Holdings, L.P. trimmed | 5,848,621 | $331M | 0.9% | 2026-Q1 |
| Artisan Partners Limited Partnership added | 5,812,398 | $329M | 0.9% | 2026-Q1 |
| Amundi added | 5,774,151 | $327M | 0.9% | 2026-Q1 |
| FIL Ltd added | 5,665,491 | $320M | 0.9% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 5,313,608 | $301M | 0.8% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 4,514,911 | $255M | 0.7% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. added | 4,451,881 | $252M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 4,166,339 | $236M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 3,716,826 | $210M | 0.6% | 2026-Q1 |
| Whale Rock Capital Management LLC trimmed | 3,532,184 | $200M | 0.6% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 3,417,009 | $193M | 0.5% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 3,389,479 | $192M | 0.5% | 2026-Q1 |
| Amova Asset Management Americas, Inc. added | 3,238,160 | $183M | 0.5% | 2026-Q1 |
| NORGES BANK trimmed | 2,775,941 | $162M | 0.5% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 2,850,831 | $161M | 0.5% | 2026-Q1 |
| SANDS CAPITAL MANAGEMENT, LLC trimmed | 2,726,701 | $154M | 0.4% | 2026-Q1 |
| Legal & General Group Plc trimmed | 2,694,177 | $152M | 0.4% | 2026-Q1 |
| Contour Asset Management LLC added | 2,502,196 | $142M | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,393,325 | $135M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 2,353,704 | $133M | 0.4% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 2,283,075 | $129M | 0.4% | 2026-Q1 |
| WORLDQUANT MILLENNIUM ADVISORS LLC added | 2,271,667 | $128M | 0.4% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 2,264,060 | $128M | 0.4% | 2026-Q1 |
| Clearbridge Investments, LLC added | 2,170,490 | $123M | 0.3% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 2,163,349 | $122M | 0.3% | 2026-Q1 |
| Foxhaven Asset Management, LP trimmed | 2,131,061 | $121M | 0.3% | 2026-Q1 |
| Nuveen, LLC trimmed | 2,068,575 | $117M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 1,947,565 | $110M | 0.3% | 2026-Q1 |
| UBS Group AG trimmed | 1,866,297 | $106M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 1,928,366 | $103M | 0.3% | 2026-Q1 |
| Swiss National Bank added | 1,729,700 | $98M | 0.3% | 2026-Q1 |
| Robeco Institutional Asset Management B.V. added | 1,693,495 | $96M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,692,618 | $96M | 0.3% | 2026-Q1 |
| GILDER GAGNON HOWE & CO LLC trimmed | 1,680,558 | $95M | 0.3% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 1,679,652 | $95M | 0.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 1,658,189 | $94M | 0.3% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,614,971 | $91M | 0.3% | 2026-Q1 |
| SOMA EQUITY PARTNERS LP trimmed | 1,610,316 | $91M | 0.3% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 1,605,814 | $91M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 1,427,883 | $81M | 0.2% | 2026-Q1 |
| Atreides Management, LP added | 1,383,703 | $78M | 0.2% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 1,259,575 | $71M | 0.2% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 1,224,244 | $69M | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 1,086,150 | $61M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 1,080,310 | $61M | 0.2% | 2026-Q1 |
| Meritech Capital Associates V L.L.C. | 1,077,627 | $61M | 0.2% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 1,065,955 | $60M | 0.2% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 1,035,265 | $59M | 0.2% | 2026-Q1 |
| Assenagon Asset Management S.A. trimmed | 1,002,156 | $57M | 0.2% | 2026-Q1 |
| Man Group plc trimmed | 991,300 | $56M | 0.2% | 2026-Q1 |
| 12 West Capital Management LP trimmed | 950,000 | $54M | 0.2% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC added | 921,424 | $53M | 0.1% | 2026-Q1 |
| National Pension Service added | 928,280 | $53M | 0.1% | 2026-Q1 |
| Invesco Ltd. trimmed | 923,074 | $52M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 903,932 | $51M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 889,796 | $50M | 0.1% | 2026-Q1 |
| Quantinno Capital Management LP added | 829,155 | $47M | 0.1% | 2026-Q1 |
| Spyglass Capital Management LLC new | 779,991 | $44M | 0.1% | 2026-Q1 |
| California Public Employees Retirement System trimmed | 770,118 | $44M | 0.1% | 2026-Q1 |
| HMI Capital Management, L.P. added | 767,300 | $43M | 0.1% | 2026-Q1 |
| Tidal Investments LLC added | 749,254 | $42M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 63,185,289 | $5.1B | 14.4% | 2025-Q4 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 4,878,554 | $676M | 1.9% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 6,507,141 | $527M | 1.5% | 2025-Q4 stale |
| Ninety One UK Ltd trimmed | 1,711,226 | $237M | 0.7% | 2025-Q3 stale |
| WT Asset Management Ltd added | 1,142,280 | $158M | 0.4% | 2025-Q3 stale |
| Greenvale Capital LLP trimmed | 1,075,000 | $149M | 0.4% | 2025-Q3 stale |
| Dragoneer Investment Group, LLC trimmed | 1,754,755 | $102M | 0.3% | 2025-Q1 stale |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. new | 730,629 | $101M | 0.3% | 2025-Q3 stale |
| NATIXIS added | 524,524 | $73M | 0.2% | 2025-Q3 stale |
| MOORE CAPITAL MANAGEMENT, LP added | 507,761 | $70M | 0.2% | 2025-Q3 stale |
| Alyeska Investment Group, L.P. added | 1,058,549 | $62M | 0.2% | 2025-Q1 stale |
| SCOPUS ASSET MANAGEMENT, L.P. added | 750,000 | $61M | 0.2% | 2025-Q4 stale |
| Broad Bay Capital Management, LP added | 410,391 | $57M | 0.2% | 2025-Q3 stale |
| AXA Investment Managers S.A. new | 399,713 | $55M | 0.2% | 2025-Q3 stale |
| TWINBEECH CAPITAL LP added | 495,256 | $52M | 0.1% | 2025-Q2 stale |
| Thrivent Financial for Lutherans added | 642,763 | $52M | 0.1% | 2025-Q4 stale |
| Holocene Advisors, LP added | 638,891 | $52M | 0.1% | 2025-Q4 stale |
| 1832 Asset Management L.P. trimmed | 359,116 | $50M | 0.1% | 2025-Q3 stale |
| Generali Powszechne Towarzystwo Emerytalne | 425,000 | $45M | 0.1% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.