OKLO Institutional Ownership
Who owns Oklo Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 672 funds reported holding OKLO at Jun 30, 2026, together owning 44.6% of the company.
- ▲373 buying vs 298 selling
- ▼Held by funds -3.4 pts
- ▼Funds holding -11
- ▲Superinvestors: 3 added, 1 cut
- ▼Put/call 1.36 to 1.44
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 672 | 683 | −1.6% |
| In funds' top 10 | 3 | 4 | −25.0% |
| 13F shares | 83M | 89.3M | −7.1% |
| Held by funds | 44.6% | 48.0% | −3.4 pts |
| New positions | 113 | 121 | −6.6% |
| Increased | 260 | 281 | −7.5% |
| Reduced | 173 | 163 | +6.1% |
| Sold out | 125 | 127 | −1.6% |
| Calls (shares) | 4.7M | 2.2M | +108.1% |
| Puts (shares) | 6.4M | 3.1M | +111.1% |
| Put/call ratio | 1.44 | 1.36 | +5.9% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in OKLO
All superinvestors →
Who owns OKLO
share of fund held shares- Index and passive funds43.6%
- Active managers and hedge funds34.2%
- Banks and brokers18.5%
- Pensions, insurers and other3.6%
The top 10 holders own 59.5% of all OKLO shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
223 funds changed their position- Darrow Company, Inc.Sold out−233K sh
- Exchange Traded Concepts, LLCAdded+315K sh
- Cambridge Investment Research Advisors, Inc.Trimmed−166K sh
- Fideuram Asset Management (Ireland) dacSold out−82K sh
- KBC Group NVTrimmed−81K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 4.80% | 8.9M | $468M | +79K |
| 2 | Van Eck Associates Corp | 4.25% | 7.9M | $414M | +1.8M |
| 3 | BlackRock, Inc. | 3.93% | 7.3M | $383M | −8.6M |
| 4 | Vanguard Capital Management LLC | 3.52% | 6.5M | $342M | +708K |
| 5 | Vanguard Portfolio Management LLC | 3.45% | 6.4M | $336M | +188K |
| 6 | Morgan Stanley | 1.75% | 3.3M | $171M | +581K |
| 7 | State Street Corp | 1.28% | 2.4M | $124M | −948K |
| 8 | Geode Capital Management, LLC | 1.27% | 2.4M | $124M | −690K |
| 9 | Cantor Fitzgerald, L. P. | 1.17% | 2.2M | $114M | +1.7M |
| 10 | UBS Group AG | 1.13% | 2.1M | $110M | +889K |
- Van Eck Associates Corp+1.8M sh+$95.8M
- Norges Bank+1.8M sh+$92M
- Cantor Fitzgerald, L. P.+1.7M sh+$88.8M
- Marshall Wace, LLP+1.1M sh+$55.8M
- UBS Group AG+889K sh+$46.5M
- Clear Street Group Inc.+830K sh+$43.4M
- Jane Street Group, LLC+736K sh+$38.5M
- Vanguard Capital Management LLC+708K sh+$37.1M
- BlackRock, Inc.−8.6M sh−$450M
- Defiance ETFs, LLC−3.5M sh−$184M
- Alyeska Investment Group, L.P.−1.7M sh−$84.8M
- State Street Corp−948K sh−$49.6M
- Geode Capital Management, LLC−690K sh−$36.1M
- Hood River Capital Management LLC−589K sh−$29.2M
- Capital World Investors−537K sh−$26.6M
- Northern Trust Corp−437K sh−$22.9M
OKLO institutional ownership FAQ
Who owns the most OKLO stock?
In Q2 2026 13F filings the largest holder of OKLO was MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd., followed by Van Eck Associates Corp and BlackRock, Inc.. Index fund managers are usually the biggest holders of large companies.
What percentage of OKLO is owned by institutions?
Funds that file 13F reports held 44.6% of OKLO's shares at Jun 30, 2026, compared with 48.0% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying OKLO?
In Q2 2026, 373 funds bought OKLO (113 of them new positions) and 298 sold (125 sold out completely). Among well known investors, 3 added and 1 cut. Our fund sentiment for OKLO is neutral.
What is OKLO's institutional put/call ratio?
Funds reported $353M of OKLO puts against $245M of calls, a put/call ratio of 1.44 (1.36 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this OKLO ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.