Oklo Inc.: which funds bought and sold
Institutions that bought and sold Oklo shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 368 institutions that filed 13F reports for both quarters added to or opened positions in Oklo, and 293 cut or closed them. Together they sold a net 8.3M shares, −9.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 2.0M shares (−35.9%); index fund managers were net sellers of 9.8M shares (−26.1%). 110 opened a new position and 121 sold out entirely.
Bought, Q2 2026 368 institutions, 110 of them new holders Sold, Q2 2026 293 institutions, 121 of them sold out
Net change, all compared −8.3M shares (−9.3%)
Net change, active managers −2.0M shares (−35.9%), 25 bought, 26 sold
Buyers versus sellers
368 bought 107 293 sold
Active managers and hedge funds 25 bought · 26 sold · −2.0M
Index fund managers 4 bought · 7 sold · −9.8M
Other institutions 339 bought · 260 sold · +3.6M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Van Eck Associates Corp | +1.8M +30.1% | 7.9M | $414M |
| Cantor Fitzgerald, L. P. | +1.7M +350.4% | 2.2M | $114M |
| Marshall Wace, LLP Hedge fund | +1.1M New position | 1.1M | $55.8M |
| UBS Group AG | +889K +73.7% | 2.1M | $110M |
| Clear Street Group Inc. | +830K +166.2% | 1.3M | $69.6M |
| Jane Street Group, LLC | +736K +138.1% | 1.3M | $66.4M |
| Vanguard Capital Management LLC Index funds | +708K +12.1% | 6.5M | $342M |
| Marex Group Ltd | +618K +104.7% | 1.2M | $63.2M |
| Morgan Stanley | +581K +21.7% | 3.3M | $171M |
| National Bank Of Canada | +576K +94.6% | 1.2M | $62.1M |
| Darrow Company, Inc. | +233K New position | 233K | $12.2M |
| Millennium Management LLC Hedge fund | +222K +390.5% | 279K | $14.6M |
| Russell Investments Group, Ltd. | +206K +465.2% | 250K | $13.1M |
| Vanguard Portfolio Management LLC Index funds | +188K +3.0% | 6.4M | $336M |
| Cambridge Investment Research Advisors, Inc. | +162K +141.3% | 276K | $14.5M |
| Virtu Financial LLC | +154K +582.7% | 181K | $9.5M |
| Caption Management, LLC | +150K +16626.7% | 151K | $7.9M |
| Bank Of Montreal | +141K +26.2% | 678K | $35.5M |
| Goldman Sachs Group Inc | +106K +10.2% | 1.1M | $60.1M |
| Simplex Trading, LLC | +103K New position | 103K | $5.4M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Marshall Wace, LLP Hedge fund | +1.1M New position | 1.1M | $55.8M |
| Millennium Management LLC Hedge fund | +222K +390.5% | 279K | $14.6M |
| FMR LLC Active manager | +84K +41.8% | 283K | $14.8M |
| Jain Global LLC Hedge fund | +77K New position | 77K | $4M |
| Brevan Howard Capital Management LP Hedge fund | +73K +877.8% | 82K | $4.3M |
| Algert Global LLC Hedge fund | +67K New position | 67K | $3.5M |
| Freestone Grove Partners LP Hedge fund | +63K +116.6% | 116K | $6.1M |
| Balyasny Asset Management L.P. Hedge fund | +52K +159.4% | 85K | $4.4M |
| Squarepoint Ops LLC Hedge fund | +46K +161.8% | 74K | $3.9M |
| Schonfeld Strategic Advisors LLC Hedge fund | +26K New position | 26K | $1.3M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Blackrock, Inc. Index funds | −8.6M −54.0% | 7.3M | $383M |
| Defiance Etfs, LLC | −3.5M −96.2% | 140K | $7.3M |
| Alyeska Investment Group, L.P. Hedge fund | −1.7M Sold out | 0 | — |
| State Street Corp Index funds | −948K −28.5% | 2.4M | $124M |
| Geode Capital Management, LLC Index funds | −690K −22.6% | 2.4M | $124M |
| Hood River Capital Management LLC | −589K Sold out | 0 | — |
| Capital World Investors Active manager | −537K Sold out | 0 | — |
| Northern Trust Corp Index funds | −437K −37.9% | 716K | $37.5M |
| Deutsche Bank Ag\ | −382K −96.0% | 16K | $827,965 |
| Connor, Clark & Lunn Investment Management Ltd. | −304K Sold out | 0 | — |
| American Century Companies Inc Active manager | −254K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −221K −88.7% | 28K | $1.5M |
| Sumitomo Mitsui Trust Group, Inc. | −207K Sold out | 0 | — |
| BNP Paribas Financial Markets | −206K −62.1% | 126K | $6.6M |
| Nuveen, LLC | −206K −44.6% | 255K | $13.4M |
| Legal & General Group PLC | −193K −60.5% | 126K | $6.6M |
| Man Group PLC Hedge fund | −187K −89.2% | 23K | $1.2M |
| Tudor Investment Corp Et Al Hedge fund | −182K Sold out | 0 | — |
| Quadrature Capital Ltd Hedge fund | −178K Sold out | 0 | — |
| Jpmorgan Chase & Co | −163K −53.1% | 144K | $8M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Alyeska Investment Group, L.P. Hedge fund | −1.7M Sold out | 0 | — |
| Capital World Investors Active manager | −537K Sold out | 0 | — |
| American Century Companies Inc Active manager | −254K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −221K −88.7% | 28K | $1.5M |
| Man Group PLC Hedge fund | −187K −89.2% | 23K | $1.2M |
| Tudor Investment Corp Et Al Hedge fund | −182K Sold out | 0 | — |
| Quadrature Capital Ltd Hedge fund | −178K Sold out | 0 | — |
| Quantbot Technologies LP Hedge fund | −107K −83.2% | 22K | $1.1M |
| Ghisallo Capital Management LLC Hedge fund | −100K Sold out | 0 | — |
| Alliancebernstein L.P. Active manager | −88K −65.0% | 48K | $2.4M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Marshall Wace, LLPHedge fund | 1.1M | $55.8M |
| Darrow Company, Inc. | 233K | $12.2M |
| Simplex Trading, LLC | 103K | $5.4M |
| Allianz Asset Management Gmbh | 102K | $5.3M |
| Catalyst Funds Management Pty Ltd | 85K | $4.5M |
| Jain Global LLCHedge fund | 77K | $4M |
| Algert Global LLCHedge fund | 67K | $3.5M |
| Treasurer Of The State Of North Carolina | 60K | $3.1M |
| Mcguire Investment Group, LLC | 52K | $2.7M |
| Marathon Trading Investment Management LLC | 42K | $2.2M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Alyeska Investment Group, L.P.Hedge fund | 1.7M | $84.8M |
| Hood River Capital Management LLC | 589K | $29.2M |
| Capital World InvestorsActive manager | 537K | $26.6M |
| Connor, Clark & Lunn Investment Management Ltd. | 304K | $15.1M |
| American Century Companies IncActive manager | 254K | $12.6M |
| Sumitomo Mitsui Trust Group, Inc. | 207K | $10.3M |
| Tudor Investment Corp Et AlHedge fund | 182K | $9M |
| Quadrature Capital LtdHedge fund | 178K | $8.8M |
| Aviva PLC | 148K | $7.4M |
| Ghisallo Capital Management LLCHedge fund | 100K | $5M |
Who holds the shares
- Institutions reporting
- 665
- Ten largest holders
- 59.6% of 13F-reported shares
- Index fund managers
- 33.6% of 13F-reported shares
- Active managers and hedge funds
- 4.3% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 25 | 26 | 9 | 14 | −2.0M | −35.9% |
| Index fund managers | 4 | 7 | 0 | 1 | −9.8M | −26.1% |
| Other institutions | 339 | 260 | 101 | 106 | +3.6M | +7.8% |