Who owns Oklo (OKLO)
Which tracked institutional funds hold OKLO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OKLO 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
148 tracked funds added or opened OKLO while 136 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
OKLO’s largest tracked holder by dollar value, MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd., sizes it at 0.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in OKLO 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 632 tracked filers holding OKLO, 364 increased or opened the position and 331 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 OKLO 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 35
- NORGES BANK$92M
- MARSHALL WACE, LLP$56M
- Darrow Company, Inc.$12M
- SIMPLEX TRADING, LLC$5M
- Allianz Asset Management GmbH$5M
- Weiss Asset Management LP$5M
Full exits 68
- Alyeska Investment Group, L.P.$85M
- D. E. Shaw & Co., Inc.$33M
- Hood River Capital Management LLC$29M
- Capital World Investors$27M
- Connor, Clark & Lunn Investment Management Ltd.$15M
- AMERICAN CENTURY COMPANIES INC$13M
Largest adds
- VAN ECK ASSOCIATES CORP$112M
- VANGUARD CAPITAL MANAGEMENT LLC$53M
- UBS Group AG$50M
- Clear Street Group Inc.$45M
- JANE STREET GROUP, LLC$40M
- MORGAN STANLEY$38M
Largest trims
- BlackRock, Inc.$300M
- Defiance ETFs, LLC$173M
- STATE STREET CORP$40M
- GEODE CAPITAL MANAGEMENT, LLC$27M
- NORTHERN TRUST CORP$20M
- DEUTSCHE BANK AG\$19M
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 |
|---|---|---|---|---|
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 8,935,822 | $468M | 11.8% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP added | 7,912,353 | $414M | 10.5% | 2026-Q2 |
| BlackRock, Inc. trimmed | 7,311,968 | $383M | 9.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 6,539,334 | $342M | 8.7% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 6,425,515 | $336M | 8.5% | 2026-Q2 |
| MORGAN STANLEY added | 3,262,878 | $171M | 4.3% | 2026-Q2 |
| STATE STREET CORP trimmed | 2,378,058 | $124M | 3.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 2,364,428 | $124M | 3.1% | 2026-Q2 |
| UBS Group AG added | 2,095,153 | $110M | 2.8% | 2026-Q2 |
| NORGES BANK added | 1,758,267 | $92M | 2.3% | 2026-Q2 |
| Clear Street Group Inc. added | 1,329,523 | $70M | 1.8% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 1,269,146 | $66M | 1.7% | 2026-Q2 |
| Marex Group Ltd added | 1,207,636 | $63M | 1.6% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ added | 1,185,312 | $62M | 1.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,148,200 | $60M | 1.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,138,236 | $60M | 1.5% | 2026-Q2 |
| CANTOR FITZGERALD, L. P. added | 1,091,138 | $57M | 1.4% | 2026-Q2 |
| MARSHALL WACE, LLP added | 1,066,394 | $56M | 1.4% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 880,052 | $46M | 1.2% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 716,383 | $37M | 0.9% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 678,175 | $35M | 0.9% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 677,701 | $35M | 0.9% | 2026-Q2 |
| LPL Financial LLC added | 629,015 | $33M | 0.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 592,471 | $31M | 0.8% | 2026-Q2 |
| PORTLAND INVESTMENT COUNSEL INC. | 589,480 | $31M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 468,802 | $25M | 0.6% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 434,127 | $23M | 0.6% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 398,843 | $21M | 0.5% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 393,729 | $21M | 0.5% | 2026-Q2 |
| ARK Investment Management LLC added | 372,257 | $19M | 0.5% | 2026-Q2 |
| Mirae Asset Global Investments Co., Ltd. added | 352,541 | $18M | 0.5% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 310,563 | $16M | 0.4% | 2026-Q2 |
| Wedbush Fund Advisers, LLC added | 292,072 | $15M | 0.4% | 2026-Q2 |
| Swiss National Bank trimmed | 287,600 | $15M | 0.4% | 2026-Q2 |
| FMR LLC added | 283,221 | $15M | 0.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 278,978 | $15M | 0.4% | 2026-Q2 |
| Nuveen, LLC trimmed | 255,304 | $13M | 0.3% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 253,057 | $13M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 250,323 | $13M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 248,080 | $13M | 0.3% | 2026-Q2 |
| Darrow Company, Inc. added | 232,670 | $12M | 0.3% | 2026-Q2 |
| CARDIFF PARK ADVISORS, LLC trimmed | 223,340 | $12M | 0.3% | 2026-Q2 |
| Trexquant Investment LP added | 208,730 | $11M | 0.3% | 2026-Q2 |
| CITIGROUP INC added | 205,222 | $11M | 0.3% | 2026-Q2 |
| OpenArc Corporate Advisory, LLC added | 200,884 | $11M | 0.3% | 2026-Q2 |
| California Public Employees Retirement System added | 183,331 | $10M | 0.2% | 2026-Q2 |
| Corient Private Wealth LP trimmed | 182,489 | $10M | 0.2% | 2026-Q2 |
| Cetera Investment Advisers added | 181,474 | $9M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 165,926 | $9M | 0.2% | 2026-Q2 |
| Foundations Investment Advisors, LLC added | 161,780 | $8M | 0.2% | 2026-Q2 |
| Tidal Investments LLC added | 155,100 | $8M | 0.2% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 151,256 | $8M | 0.2% | 2026-Q2 |
| Caption Management, LLC added | 150,540 | $8M | 0.2% | 2026-Q2 |
| Focus Partners Wealth added | 144,333 | $8M | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 143,986 | $8M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 143,827 | $8M | 0.2% | 2026-Q2 |
| Defiance ETFs, LLC trimmed | 139,574 | $7M | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 132,153 | $7M | 0.2% | 2026-Q2 |
| Caprock Group, LLC trimmed | 131,055 | $7M | 0.2% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 128,241 | $6M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 125,631 | $7M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 125,527 | $7M | 0.2% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM added | 125,335 | $7M | 0.2% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 120,334 | $6M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 118,577 | $6M | 0.2% | 2026-Q2 |
| Freestone Grove Partners LP added | 116,383 | $6M | 0.2% | 2026-Q2 |
| Havemeyer Place LP added | 113,742 | $6M | 0.2% | 2026-Q2 |
| Invesco Ltd. trimmed | 113,178 | $6M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 110,034 | $6M | 0.1% | 2026-Q2 |
| AlphaStar Capital Management, LLC added | 108,983 | $6M | 0.1% | 2026-Q2 |
| NOMURA HOLDINGS INC added | 108,430 | $6M | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 103,032 | $5M | 0.1% | 2026-Q2 |
| Allianz Asset Management GmbH new | 101,869 | $5M | 0.1% | 2026-Q2 |
| Private Advisor Group, LLC trimmed | 99,054 | $5M | 0.1% | 2026-Q2 |
| WINTON GROUP Ltd trimmed | 97,300 | $5M | 0.1% | 2026-Q2 |
| Westwood Wealth Management added | 97,240 | $5M | 0.1% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 95,362 | $5M | 0.1% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 93,900 | $5M | 0.1% | 2026-Q2 |
| HITE Hedge Asset Management LLC trimmed | 93,886 | $5M | 0.1% | 2026-Q2 |
| FORA Capital, LLC added | 91,248 | $5M | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 90,798 | $5M | 0.1% | 2026-Q2 |
| CIBC Bancorp USA Inc. trimmed | 90,453 | $5M | 0.1% | 2026-Q2 |
| Weiss Asset Management LP new | 86,321 | $5M | 0.1% | 2026-Q2 |
| Catalyst Funds Management Pty Ltd new | 85,350 | $4M | 0.1% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 84,965 | $4M | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 83,605 | $4M | 0.1% | 2026-Q2 |
| Fideuram Asset Management (Ireland) dac added | 82,178 | $5M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 81,610 | $4M | 0.1% | 2026-Q2 |
| CREDIT AGRICOLE S A trimmed | 79,780 | $4M | 0.1% | 2026-Q2 |
| BLAIR WILLIAM & CO/IL added | 79,266 | $4M | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 77,326 | $4M | 0.1% | 2026-Q2 |
| Jain Global LLC trimmed | 76,557 | $4M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 73,779 | $4M | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 73,626 | $4M | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 72,538 | $4M | 0.1% | 2026-Q2 |
| Equitable Holdings, Inc. added | 72,426 | $4M | 0.1% | 2026-Q2 |
| Livforsakringsbolaget Skandia, Omsesidigt added | 71,778 | $26M | 0.7% | 2026-Q2 |
| Banque Transatlantique SA added | 71,415 | $4M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 70,900 | $4M | 0.1% | 2026-Q2 |
| MML INVESTORS SERVICES, LLC added | 69,887 | $4M | 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.