Who owns Rivian Automotive (RIVN)
Which tracked institutional funds hold RIVN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RIVN 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 RIVN is one-sided between 2025-Q4 and 2026-Q1: 73 added or opened and 234 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
RIVN’s largest tracked holder by dollar value, AMAZON COM INC, sizes it at 90.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 90.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in RIVN 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 806 tracked filers holding RIVN, 388 increased or opened the position and 320 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 RIVN 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 32
- VANGUARD CAPITAL MANAGEMENT LLC$606M
- VANGUARD PORTFOLIO MANAGEMENT LLC$543M
- Capital World Investors$165M
- VANGUARD FIDUCIARY TRUST CO$78M
- VANGUARD ASSET MANAGEMENT, Ltd$20M
- Aquatic Capital Management LLC$14M
Full exits 39
- VANGUARD GROUP INC$1.6B
- TWO SIGMA ADVISERS, LP$407M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$42M
- Y-Intercept (Hong Kong) Ltd$27M
- MUFG Securities EMEA plc$24M
- NATIXIS$24M
Largest adds
- MARSHALL WACE, LLP$45M
- HRT FINANCIAL LP$41M
- FMR LLC$26M
- Point72 Asset Management, L.P.$26M
- GOLDMAN SACHS GROUP INC$21M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$20M
Largest trims
- AMAZON COM INC$738M
- BlackRock, Inc.$492M
- Capital International Investors$256M
- BAILLIE GIFFORD & CO$203M
- RENAISSANCE TECHNOLOGIES LLC$159M
- BANK OF AMERICA CORP /DE/$146M
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 |
|---|---|---|---|---|
| AMAZON COM INC | 158,363,834 | $2.4B | 18.7% | 2026-Q1 |
| BlackRock, Inc. added | 56,419,011 | $979M | 7.7% | 2026-Q2 |
| BAILLIE GIFFORD & CO trimmed | 43,210,348 | $750M | 5.9% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 40,259,422 | $606M | 4.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 36,085,183 | $543M | 4.3% | 2026-Q1 |
| STATE STREET CORP added | 22,396,819 | $389M | 3.0% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 20,832,777 | $361M | 2.8% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 19,178,109 | $333M | 2.6% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 22,781,407 | $330M | 2.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 15,313,697 | $230M | 1.8% | 2026-Q1 |
| NORGES BANK added | 11,617,138 | $202M | 1.6% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 13,107,829 | $197M | 1.5% | 2026-Q1 |
| Capital World Investors added | 11,117,342 | $193M | 1.5% | 2026-Q2 |
| MORGAN STANLEY trimmed | 10,321,452 | $155M | 1.2% | 2026-Q1 |
| UBS Group AG trimmed | 10,257,280 | $154M | 1.2% | 2026-Q1 |
| FMR LLC added | 8,546,948 | $148M | 1.2% | 2026-Q2 |
| Capital International Investors trimmed | 8,057,778 | $140M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 8,896,442 | $134M | 1.0% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 7,599,796 | $132M | 1.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 8,674,247 | $131M | 1.0% | 2026-Q1 |
| MARSHALL WACE, LLP added | 7,167,905 | $124M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 7,657,181 | $115M | 0.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 7,438,776 | $112M | 0.9% | 2026-Q1 |
| Amundi added | 6,807,591 | $102M | 0.8% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 5,604,786 | $94M | 0.7% | 2026-Q2 |
| SOMA EQUITY PARTNERS LP trimmed | 5,711,188 | $86M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 5,522,341 | $83M | 0.7% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 4,578,186 | $79M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO new | 5,166,192 | $78M | 0.6% | 2026-Q1 |
| Legal & General Group Plc trimmed | 4,462,105 | $67M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 3,915,150 | $59M | 0.5% | 2026-Q1 |
| GILDER GAGNON HOWE & CO LLC trimmed | 3,547,581 | $53M | 0.4% | 2026-Q1 |
| Invesco Ltd. added | 3,039,207 | $53M | 0.4% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 3,097,836 | $47M | 0.4% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 3,060,801 | $46M | 0.4% | 2026-Q1 |
| HRT FINANCIAL LP added | 3,046,695 | $46M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 2,815,982 | $42M | 0.3% | 2026-Q1 |
| Nuveen, LLC trimmed | 2,765,489 | $42M | 0.3% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 2,739,724 | $41M | 0.3% | 2026-Q1 |
| Alpine Global Management, LLC added | 2,660,868 | $40M | 0.3% | 2026-Q1 |
| Swiss National Bank added | 2,331,000 | $35M | 0.3% | 2026-Q1 |
| BARCLAYS PLC trimmed | 1,891,602 | $28M | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 1,882,718 | $28M | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 1,879,129 | $28M | 0.2% | 2026-Q1 |
| Aberdeen Group plc added | 1,693,854 | $25M | 0.2% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 1,645,230 | $25M | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 1,436,704 | $22M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 1,482,060 | $22M | 0.2% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 1,338,732 | $20M | 0.2% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 1,239,447 | $19M | 0.1% | 2026-Q1 |
| VALUEWORKS LLC trimmed | 1,230,291 | $19M | 0.1% | 2026-Q1 |
| Mitsubishi UFJ Trust & Banking Corp trimmed | 1,110,966 | $17M | 0.1% | 2026-Q1 |
| California Public Employees Retirement System trimmed | 1,097,030 | $17M | 0.1% | 2026-Q1 |
| Marex Group plc added | 1,089,427 | $16M | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC | 1,086,281 | $16M | 0.1% | 2026-Q1 |
| LPL Financial LLC added | 1,082,245 | $16M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 859,239 | $15M | 0.1% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 984,496 | $15M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 967,639 | $15M | 0.1% | 2026-Q1 |
| Aquatic Capital Management LLC added | 958,904 | $14M | 0.1% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 955,401 | $14M | 0.1% | 2026-Q1 |
| Swedbank AB added | 943,104 | $14M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 893,456 | $13M | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 868,585 | $13M | 0.1% | 2026-Q1 |
| USS Investment Management Ltd new | 841,876 | $13M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 638,623 | $13M | 0.1% | 2026-Q1 |
| AVIVA PLC added | 746,418 | $11M | 0.1% | 2026-Q1 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 703,467 | $11M | 0.1% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 689,772 | $10M | 0.1% | 2026-Q1 |
| MIZUHO MARKETS AMERICAS LLC added | 683,024 | $10M | 0.1% | 2026-Q1 |
| Impax Asset Management Group plc added | 650,000 | $10M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 621,995 | $9M | 0.1% | 2026-Q1 |
| DANSKE BANK A/S trimmed | 608,993 | $9M | 0.1% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 603,317 | $9M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 582,153 | $9M | 0.1% | 2026-Q1 |
| Woodline Partners LP added | 565,252 | $9M | 0.1% | 2026-Q1 |
| Korea Investment CORP added | 552,494 | $8M | 0.1% | 2026-Q1 |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY | 542,523 | $8M | 0.1% | 2026-Q1 |
| Covalis Capital LLP new | 540,918 | $8M | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL trimmed | 464,476 | $8M | 0.1% | 2026-Q2 |
| EULAV Asset Management trimmed | 520,000 | $8M | 0.1% | 2026-Q1 |
| Sculptor Capital LP trimmed | 514,400 | $8M | 0.1% | 2026-Q1 |
| Quantinno Capital Management LP added | 471,963 | $7M | 0.1% | 2026-Q1 |
| IMC-Chicago, LLC added | 444,941 | $7M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 81,409,278 | $1.6B | 12.6% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 20,659,520 | $407M | 3.2% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 2,137,073 | $42M | 0.3% | 2025-Q4 stale |
| Y-Intercept (Hong Kong) Ltd trimmed | 1,379,830 | $27M | 0.2% | 2025-Q4 stale |
| MUFG Securities EMEA plc new | 1,231,000 | $24M | 0.2% | 2025-Q4 stale |
| NATIXIS added | 1,225,657 | $24M | 0.2% | 2025-Q4 stale |
| WORLDQUANT MILLENNIUM ADVISORS LLC trimmed | 699,371 | $14M | 0.1% | 2025-Q4 stale |
| Balyasny Asset Management L.P. added | 624,354 | $12M | 0.1% | 2025-Q4 stale |
| Prysm Capital, L.P. | 771,551 | $11M | 0.1% | 2025-Q2 stale |
| Point72 Europe (London) LLP new | 819,566 | $10M | 0.1% | 2025-Q1 stale |
| Invenomic Capital Management LP added | 709,173 | $9M | 0.1% | 2025-Q1 stale |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC trimmed | 699,580 | $9M | 0.1% | 2025-Q1 stale |
| Squarepoint Ops LLC added | 556,894 | $8M | 0.1% | 2025-Q3 stale |
| ING GROEP NV new | 510,938 | $8M | 0.1% | 2025-Q3 stale |
| EXCHANGE TRADED CONCEPTS, LLC added | 335,737 | $7M | 0.1% | 2025-Q4 stale |
| Achmea Investment Management B.V. added | 474,528 | $7M | 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.