Who owns Ouster (OUST)
Which tracked institutional funds hold OUST, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OUST company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
The tracked-fund tape on OUST is one-sided between 2026-Q1 and 2026-Q2: 175 added or opened and 20 trimmed or exited — on balance accumulating.
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
OUST’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 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes OUST more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in OUST 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 2026-Q1 and 2026-Q2, across 309 tracked filers holding OUST, 219 increased or opened the position and 108 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 OUST between the 2026-Q1 and 2026-Q2 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 52
- OBERWEIS ASSET MANAGEMENT INC/$34M
- Shannon River Fund Management LLC$28M
- Baird Financial Group, Inc.$25M
- Driehaus Capital Management LLC$19M
- NEXT CENTURY GROWTH INVESTORS LLC$16M
- SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC$16M
Full exits 17
- Tao Capital Management LP$16M
- Handelsbanken Fonder AB$11M
- Bastion Asset Management Inc.$5M
- Swiss Life Asset Management Ltd$5M
- Point72 Asset Management, L.P.$5M
- LORD, ABBETT & CO. LLC$4M
Largest adds
- BlackRock, Inc.$250M
- VANGUARD CAPITAL MANAGEMENT LLC$120M
- STATE STREET CORP$98M
- VANGUARD PORTFOLIO MANAGEMENT LLC$80M
- GEODE CAPITAL MANAGEMENT, LLC$76M
- MORGAN STANLEY$64M
Largest trims
- D. E. Shaw & Co., Inc.$6M
- CANADA PENSION PLAN INVESTMENT BOARD$4M
- Walleye Capital LLC$2M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 5,557,143 | $347M | 16.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,707,939 | $169M | 8.1% | 2026-Q2 |
| STATE STREET CORP added | 2,052,274 | $128M | 6.1% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 1,802,819 | $113M | 5.4% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,642,981 | $103M | 4.9% | 2026-Q2 |
| MORGAN STANLEY added | 1,243,895 | $78M | 3.7% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,021,353 | $64M | 3.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 728,688 | $40M | 1.9% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 669,170 | $42M | 2.0% | 2026-Q2 |
| Penn Capital Management Company, LLC trimmed | 656,088 | $41M | 2.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 612,654 | $38M | 1.8% | 2026-Q2 |
| Legal & General Group Plc added | 601,815 | $38M | 1.8% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 575,900 | $36M | 1.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 564,023 | $35M | 1.7% | 2026-Q2 |
| OBERWEIS ASSET MANAGEMENT INC/ new | 545,810 | $34M | 1.6% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 533,951 | $33M | 1.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 476,586 | $30M | 1.4% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 452,368 | $28M | 1.4% | 2026-Q2 |
| Shannon River Fund Management LLC new | 449,264 | $28M | 1.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 445,274 | $28M | 1.3% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 410,092 | $26M | 1.2% | 2026-Q2 |
| Baird Financial Group, Inc. new | 403,365 | $25M | 1.2% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 364,768 | $23M | 1.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 354,622 | $23M | 1.1% | 2026-Q2 |
| UBS Group AG added | 317,774 | $20M | 0.9% | 2026-Q2 |
| Driehaus Capital Management LLC trimmed | 307,142 | $19M | 0.9% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 307,109 | $19M | 0.9% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 296,762 | $19M | 0.9% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 271,587 | $17M | 0.8% | 2026-Q2 |
| NEXT CENTURY GROWTH INVESTORS LLC new | 252,227 | $16M | 0.8% | 2026-Q2 |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC new | 250,000 | $16M | 0.7% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 248,194 | $16M | 0.7% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP new | 246,061 | $15M | 0.7% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 241,530 | $15M | 0.7% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 235,721 | $15M | 0.7% | 2026-Q2 |
| ESSEX INVESTMENT MANAGEMENT CO LLC added | 226,028 | $14M | 0.7% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 225,290 | $14M | 0.7% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 212,447 | $13M | 0.6% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 185,218 | $12M | 0.6% | 2026-Q2 |
| Bridgewater Associates, LP added | 183,455 | $11M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 179,639 | $11M | 0.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 179,008 | $11M | 0.5% | 2026-Q2 |
| AWM Investment Company, Inc. trimmed | 157,435 | $10M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 152,825 | $10M | 0.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 152,728 | $10M | 0.5% | 2026-Q2 |
| Walleye Trading LLC added | 139,514 | $9M | 0.4% | 2026-Q2 |
| Hillsdale Investment Management Inc. added | 131,410 | $8M | 0.4% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 130,264 | $8M | 0.4% | 2026-Q2 |
| Squarepoint Ops LLC added | 122,148 | $8M | 0.4% | 2026-Q2 |
| DNB Asset Management AS added | 119,008 | $7M | 0.4% | 2026-Q2 |
| Swiss National Bank added | 116,600 | $7M | 0.3% | 2026-Q2 |
| LPL Financial LLC added | 115,566 | $7M | 0.3% | 2026-Q2 |
| HERALD INVESTMENT MANAGEMENT Ltd trimmed | 114,500 | $7M | 0.3% | 2026-Q2 |
| CITIGROUP INC added | 112,814 | $7M | 0.3% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 104,004 | $7M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 101,712 | $6M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 97,227 | $6M | 0.3% | 2026-Q2 |
| Mariner, LLC trimmed | 92,988 | $6M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 87,091 | $5M | 0.3% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 86,219 | $5M | 0.3% | 2026-Q2 |
| FMR LLC trimmed | 86,095 | $5M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 85,031 | $5M | 0.3% | 2026-Q2 |
| Legato Capital Management LLC added | 84,904 | $5M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 84,655 | $5M | 0.3% | 2026-Q2 |
| EP Wealth Advisors, LLC new | 80,562 | $5M | 0.2% | 2026-Q2 |
| Raiffeisen Bank International AG | 80,000 | $4M | 0.2% | 2026-Q2 |
| Pembroke Management, LTD new | 78,740 | $5M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 77,684 | $5M | 0.2% | 2026-Q2 |
| Ranger Investment Management, L.P. new | 77,190 | $5M | 0.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP new | 71,024 | $4M | 0.2% | 2026-Q2 |
| Siren, L.L.C. new | 67,500 | $4M | 0.2% | 2026-Q2 |
| BW Gestao de Investimentos Ltda. trimmed | 66,000 | $4M | 0.2% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd added | 65,711 | $4M | 0.2% | 2026-Q2 |
| 180 WEALTH ADVISORS, LLC trimmed | 58,546 | $4M | 0.2% | 2026-Q2 |
| FORA Capital, LLC added | 58,027 | $4M | 0.2% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC added | 53,626 | $3M | 0.2% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. trimmed | 53,225 | $3M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 52,941 | $3M | 0.2% | 2026-Q2 |
| Hennion & Walsh Asset Management, Inc. trimmed | 51,793 | $3M | 0.2% | 2026-Q2 |
| Creative Planning added | 50,341 | $3M | 0.2% | 2026-Q2 |
| Lisanti Capital Growth, LLC new | 49,830 | $3M | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 49,032 | $3M | 0.1% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 46,950 | $3M | 0.1% | 2026-Q2 |
| FirstWave Capital Management LLC new | 46,043 | $3M | 0.1% | 2026-Q2 |
| BENJAMIN EDWARDS INC added | 45,808 | $3M | 0.1% | 2026-Q2 |
| Patten Group, Inc. added | 44,417 | $3M | 0.1% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 43,900 | $3M | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 43,750 | $3M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 43,414 | $3M | 0.1% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC trimmed | 42,502 | $3M | 0.1% | 2026-Q2 |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT new | 40,674 | $3M | 0.1% | 2026-Q2 |
| COOKSON PEIRCE & CO INC new | 38,283 | $2M | 0.1% | 2026-Q2 |
| Dakota Wealth Management new | 38,230 | $2M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 36,673 | $2M | 0.1% | 2026-Q2 |
| Tidal Investments LLC added | 34,741 | $2M | 0.1% | 2026-Q2 |
| Corecam Pte. Ltd. new | 34,098 | $2M | 0.1% | 2026-Q2 |
| J.W. COLE ADVISORS, INC. new | 33,774 | $2M | 0.1% | 2026-Q2 |
| KORNITZER CAPITAL MANAGEMENT INC /KS trimmed | 32,103 | $2M | 0.1% | 2026-Q2 |
| INTERCAPITAL, LLC new | 32,000 | $2M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 31,683 | $2M | 0.1% | 2026-Q2 |
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.