Who owns Riot Platforms (RIOT)
Which tracked institutional funds hold RIOT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RIOT company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-22). 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
97 tracked funds added or opened RIOT while 74 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
RIOT’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% 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 RIOT more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in RIOT 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 404 tracked filers holding RIOT, 239 increased or opened the position and 174 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 RIOT 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 39
- VANGUARD PORTFOLIO MANAGEMENT LLC$268M
- VANGUARD CAPITAL MANAGEMENT LLC$184M
- Situational Awareness Partners LP$142M
- WESTFIELD CAPITAL MANAGEMENT CO LP$43M
- Defiance ETFs, LLC$33M
- VANGUARD FIDUCIARY TRUST CO$26M
Full exits 24
- VANGUARD GROUP INC$506M
- VIKING GLOBAL INVESTORS LP$157M
- RENAISSANCE TECHNOLOGIES LLC$54M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$46M
- CIBC WORLD MARKETS CORP$32M
- Galaxy Group Investments LLC$8M
Largest adds
- Situational Awareness LP$64M
- NOMURA HOLDINGS INC$52M
- Azora Capital LP$43M
- BANK OF AMERICA CORP /DE/$39M
- AMERIPRISE FINANCIAL INC$33M
- Starboard Value LP$31M
Largest trims
- BlackRock, Inc.$181M
- Value Aligned Research Advisors, LLC$58M
- Qube Research & Technologies Ltd$21M
- GOLDMAN SACHS GROUP INC$15M
- MORGAN STANLEY$14M
- BALYASNY ASSET MANAGEMENT L.P.$12M
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 |
|---|---|---|---|---|
| BlackRock, Inc. added | 31,984,547 | $876M | 14.5% | 2026-Q2 |
| FMR LLC added | 19,645,295 | $538M | 8.9% | 2026-Q2 |
| Starboard Value LP trimmed | 10,114,576 | $277M | 4.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 21,685,659 | $268M | 4.4% | 2026-Q1 |
| STATE STREET CORP added | 9,438,485 | $258M | 4.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 14,865,081 | $184M | 3.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. | 5,455,200 | $149M | 2.5% | 2026-Q2 |
| Situational Awareness Partners LP new | 11,502,137 | $142M | 2.4% | 2026-Q1 |
| Situational Awareness LP added | 11,502,137 | $142M | 2.4% | 2026-Q1 |
| NOMURA HOLDINGS INC added | 9,905,139 | $122M | 2.0% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 8,964,468 | $111M | 1.8% | 2026-Q1 |
| Invesco Ltd. added | 3,959,103 | $108M | 1.8% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 3,714,879 | $102M | 1.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 3,632,510 | $99M | 1.6% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 3,412,258 | $93M | 1.5% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 7,385,953 | $91M | 1.5% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 7,016,451 | $87M | 1.4% | 2026-Q1 |
| Sachem Head Capital Management LP new | 2,865,000 | $78M | 1.3% | 2026-Q2 |
| Value Aligned Research Advisors, LLC trimmed | 5,176,918 | $64M | 1.1% | 2026-Q1 |
| MIZUHO MARKETS AMERICAS LLC added | 5,059,658 | $63M | 1.0% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 1,995,548 | $55M | 0.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 4,036,522 | $50M | 0.8% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 3,837,108 | $47M | 0.8% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 3,808,804 | $47M | 0.8% | 2026-Q1 |
| Azora Capital LP added | 3,732,717 | $46M | 0.8% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,674,900 | $46M | 0.8% | 2026-Q2 |
| WESTFIELD CAPITAL MANAGEMENT CO LP added | 3,499,880 | $43M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 3,186,828 | $39M | 0.7% | 2026-Q1 |
| MORGAN STANLEY trimmed | 3,035,964 | $38M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 3,028,288 | $37M | 0.6% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 2,957,456 | $37M | 0.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 1,310,980 | $36M | 0.6% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 2,788,331 | $34M | 0.6% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP trimmed | 2,743,324 | $34M | 0.6% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 2,724,895 | $34M | 0.6% | 2026-Q1 |
| Defiance ETFs, LLC new | 2,705,786 | $33M | 0.6% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 2,635,358 | $33M | 0.5% | 2026-Q1 |
| Tidal Investments LLC added | 2,394,750 | $30M | 0.5% | 2026-Q1 |
| UBS Group AG trimmed | 2,212,913 | $27M | 0.5% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 2,148,272 | $27M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 2,106,604 | $26M | 0.4% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 926,749 | $25M | 0.4% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP added | 2,006,343 | $25M | 0.4% | 2026-Q1 |
| CIBC Bancorp USA Inc. added | 1,868,192 | $23M | 0.4% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 819,561 | $22M | 0.4% | 2026-Q2 |
| MARK ASSET MANAGEMENT LP added | 1,740,320 | $22M | 0.4% | 2026-Q1 |
| Duquesne Family Office LLC new | 754,800 | $21M | 0.3% | 2026-Q2 |
| Senator Investment Group LP new | 1,500,000 | $19M | 0.3% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 1,452,836 | $18M | 0.3% | 2026-Q1 |
| Broad Peak Investment Advisers Pte Ltd added | 1,450,000 | $18M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 1,310,137 | $15M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,150,350 | $14M | 0.2% | 2026-Q1 |
| EXCHANGE TRADED CONCEPTS, LLC trimmed | 1,106,183 | $14M | 0.2% | 2026-Q1 |
| MetLife Investment Management, LLC added | 957,259 | $12M | 0.2% | 2026-Q1 |
| Vident Advisory, LLC trimmed | 918,755 | $11M | 0.2% | 2026-Q1 |
| Nuveen, LLC trimmed | 892,725 | $11M | 0.2% | 2026-Q1 |
| CLEARFIELD CAPITAL MANAGEMENT LP added | 879,182 | $11M | 0.2% | 2026-Q1 |
| BIT Capital GmbH trimmed | 813,835 | $10M | 0.2% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 806,000 | $10M | 0.2% | 2026-Q1 |
| Galaxy Digital Capital Management GP LLC added | 793,497 | $10M | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 783,330 | $10M | 0.2% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC added | 712,217 | $9M | 0.1% | 2026-Q1 |
| IMC-Chicago, LLC trimmed | 699,780 | $9M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 683,903 | $8M | 0.1% | 2026-Q1 |
| Swiss National Bank added | 671,800 | $8M | 0.1% | 2026-Q1 |
| LMR Partners LLP added | 654,090 | $8M | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 278,936 | $8M | 0.1% | 2026-Q2 |
| EverSource Wealth Advisors, LLC added | 45,023 | $7M | 0.1% | 2026-Q1 |
| Alight Capital Management LP | 600,000 | $7M | 0.1% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 593,750 | $7M | 0.1% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 577,329 | $7M | 0.1% | 2026-Q1 |
| Edgestream Partners, L.P. added | 559,354 | $7M | 0.1% | 2026-Q1 |
| WOLVERINE ASSET MANAGEMENT LLC new | 557,083 | $7M | 0.1% | 2026-Q1 |
| Clear Street Group Inc. added | 541,954 | $7M | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 540,159 | $7M | 0.1% | 2026-Q1 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main added | 539,434 | $7M | 0.1% | 2026-Q1 |
| RR Advisors, LLC added | 523,308 | $6M | 0.1% | 2026-Q1 |
| Clearline Capital LP | 495,748 | $6M | 0.1% | 2026-Q1 |
| COMPASS ROSE ASSET MANAGEMENT, LP new | 495,000 | $6M | 0.1% | 2026-Q1 |
| Marex Group plc added | 482,269 | $6M | 0.1% | 2026-Q1 |
| Moody Aldrich Partners LLC added | 466,924 | $6M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 456,719 | $6M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 39,910,169 | $506M | 8.4% | 2025-Q4 stale |
| VIKING GLOBAL INVESTORS LP new | 12,428,894 | $157M | 2.6% | 2025-Q4 stale |
| Merewether Investment Management, LP added | 2,510,000 | $48M | 0.8% | 2025-Q3 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 3,659,672 | $46M | 0.8% | 2025-Q4 stale |
| TOMS Capital Investment Management LP added | 3,764,000 | $43M | 0.7% | 2025-Q2 stale |
| CIBC WORLD MARKETS CORP added | 2,523,082 | $32M | 0.5% | 2025-Q4 stale |
| THAMES CAPITAL MANAGEMENT LLC new | 588,943 | $11M | 0.2% | 2025-Q3 stale |
| SAMLYN CAPITAL, LLC new | 504,249 | $10M | 0.2% | 2025-Q3 stale |
| ARDSLEY ADVISORY PARTNERS LP added | 450,000 | $9M | 0.1% | 2025-Q3 stale |
| Galaxy Group Investments LLC new | 619,438 | $8M | 0.1% | 2025-Q4 stale |
| Parallax Volatility Advisers, L.P. added | 361,224 | $7M | 0.1% | 2025-Q3 stale |
| Virtu Financial LLC added | 541,527 | $7M | 0.1% | 2025-Q4 stale |
| Monashee Investment Management LLC new | 600,000 | $7M | 0.1% | 2025-Q2 stale |
| PEAK6 LLC trimmed | 520,484 | $7M | 0.1% | 2025-Q4 stale |
| DENDUR CAPITAL LP | 550,000 | $6M | 0.1% | 2025-Q2 stale |
| Hidden Lake Asset Management LP new | 512,210 | $6M | 0.1% | 2025-Q2 stale |
| CAPITAL FUND MANAGEMENT S.A. trimmed | 453,663 | $6M | 0.1% | 2025-Q4 stale |
| MARSHALL WACE, LLP added | 449,102 | $6M | 0.1% | 2025-Q4 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.