OKLO Oklo Inc.
Oklo Inc. (OKLO) Institutional Ownership
What the institutions did with OKLO last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 8.9M | 10.8% |
| VAN ECK ASSOCIATES CORP | 7.9M | 9.5% |
| BlackRock, Inc. | 7.3M | 8.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.5M | 7.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.4M | 7.7% |
| MORGAN STANLEY | 3.3M | 3.9% |
| STATE STREET CORP | 2.4M | 2.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4M | 2.9% |
| CANTOR FITZGERALD, L. P. | 2.2M | 2.6% |
| UBS Group AG | 2.1M | 2.5% |
| NORGES BANK | 1.8M | 2.1% |
| Clear Street Group Inc. | 1.3M | 1.6% |
| JANE STREET GROUP, LLC | 1.3M | 1.5% |
| Marex Group plc | 1.2M | 1.5% |
| NATIONAL BANK OF CANADA /FI/ | 1.2M | 1.4% |
| GOLDMAN SACHS GROUP INC | 1.1M | 1.4% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | 1.4% |
| MARSHALL WACE, LLP | 1.1M | 1.3% |
| VANGUARD FIDUCIARY TRUST CO | 880.1K | 1.1% |
| NORTHERN TRUST CORP | 716.4K | 0.9% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 678.2K | 0.8% |
| BANK OF MONTREAL /CAN/ | 677.7K | 0.8% |
| LPL Financial LLC | 629.0K | 0.8% |
| BANK OF AMERICA CORP /DE/ | 592.5K | 0.7% |
| PORTLAND INVESTMENT COUNSEL INC. | 589.5K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Reduced | 15.9M | 7.3M | -8.6M |
| Defiance ETFs, LLC | Reduced | 3.6M | 139.6K | -3.5M |
| VAN ECK ASSOCIATES CORP | Increased | 6.1M | 7.9M | +1.8M |
| Alyeska Investment Group, L.P. | Sold Out | 1.7M | 0 | -1.7M |
| CANTOR FITZGERALD, L. P. | Increased | 484.5K | 2.2M | +1.7M |
| MARSHALL WACE, LLP | New | 0 | 1.1M | +1.1M |
| STATE STREET CORP | Reduced | 3.3M | 2.4M | -948.1K |
| UBS Group AG | Increased | 1.2M | 2.1M | +888.9K |
| Clear Street Group Inc. | Increased | 499.4K | 1.3M | +830.1K |
| JANE STREET GROUP, LLC | Increased | 533.0K | 1.3M | +736.1K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 5.8M | 6.5M | +708.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 3.1M | 2.4M | -689.7K |
| Marex Group plc | Increased | 589.9K | 1.2M | +617.8K |
| Hood River Capital Management LLC | Sold Out | 589.3K | 0 | -589.3K |
| MORGAN STANLEY | Increased | 2.7M | 3.3M | +581.1K |
| NATIONAL BANK OF CANADA /FI/ | Increased | 609.2K | 1.2M | +576.1K |
| Capital World Investors | Sold Out | 537.4K | 0 | -537.4K |
| NORTHERN TRUST CORP | Reduced | 1.2M | 716.4K | -436.7K |
| DEUTSCHE BANK AG\ | Reduced | 397.8K | 15.8K | -382.0K |
| Connor, Clark & Lunn Investment Management Ltd. | Sold Out | 303.8K | 0 | -303.8K |
| AMERICAN CENTURY COMPANIES INC | Sold Out | 254.2K | 0 | -254.2K |
| Darrow Company, Inc. | New | 0 | 232.7K | +232.7K |
| MILLENNIUM MANAGEMENT LLC | Increased | 56.9K | 279.0K | +222.1K |
| CITADEL ADVISORS LLC | Reduced | 249.7K | 28.3K | -221.4K |
| Sumitomo Mitsui Trust Group, Inc. | Sold Out | 206.9K | 0 | -206.9K |
| Russell Investments Group, Ltd. | Increased | 44.3K | 250.3K | +206.0K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 331.5K | 125.6K | -205.9K |
| Nuveen, LLC | Reduced | 461.1K | 255.3K | -205.8K |
| Legal & General Group Plc | Reduced | 318.1K | 125.5K | -192.5K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 6.2M | 6.4M | +187.6K |
| Man Group plc | Reduced | 209.8K | 22.6K | -187.2K |
| TUDOR INVESTMENT CORP ET AL | Sold Out | 181.9K | 0 | -181.9K |
| Quadrature Capital Ltd | Sold Out | 177.7K | 0 | -177.7K |
| JPMORGAN CHASE & CO | Reduced | 307.1K | 144.0K | -163.1K |
| Cambridge Investment Research Advisors, Inc. | Increased | 114.5K | 276.3K | +161.8K |
| Virtu Financial LLC | Increased | 26.5K | 180.9K | +154.4K |
| Amundi | Reduced | 164.8K | 14.4K | -150.4K |
| Caption Management, LLC | Increased | 900 | 150.5K | +149.6K |
| AVIVA PLC | Sold Out | 148.3K | 0 | -148.3K |
| BARCLAYS PLC | Reduced | 280.5K | 132.2K | -148.3K |
| BANK OF MONTREAL /CAN/ | Increased | 537.2K | 677.7K | +140.5K |
| Jump Financial, LLC | Reduced | 132.8K | 5.0K | -127.8K |
| Mitsubishi UFJ Asset Management Co., Ltd. | Reduced | 161.1K | 45.3K | -115.8K |
| Quantbot Technologies LP | Reduced | 129.1K | 21.7K | -107.4K |
| GOLDMAN SACHS GROUP INC | Increased | 1.0M | 1.1M | +106.3K |
| SIMPLEX TRADING, LLC | New | 0 | 103.0K | +103.0K |
| Allianz Asset Management GmbH | New | 0 | 101.9K | +101.9K |
| Tidal Investments LLC | Increased | 53.6K | 155.1K | +101.5K |
| Ghisallo Capital Management LLC | Sold Out | 100.0K | 0 | -100.0K |
| ROYAL BANK OF CANADA | Increased | 150.4K | 248.1K | +97.7K |
| LPL Financial LLC | Increased | 534.0K | 629.0K | +95.1K |
| Havemeyer Place LP | Increased | 22.1K | 113.7K | +91.6K |
| KLP KAPITALFORVALTNING AS | Reduced | 124.1K | 34.3K | -89.8K |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | Increased | 36.4K | 125.3K | +89.0K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 136.1K | 47.7K | -88.4K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 160.3K | 72.5K | -87.8K |
| Vontobel Holding Ltd. | Reduced | 94.3K | 7.6K | -86.7K |
| Weiss Asset Management LP | New | 0 | 86.3K | +86.3K |
| Catalyst Funds Management Pty Ltd | New | 0 | 85.4K | +85.4K |
| SG Americas Securities, LLC | Increased | 87.8K | 172.3K | +84.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.