Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in OKLO held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 15.9M | $788.9M | +7.3% | 9.143% | 0.01% |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 9.0M | $444.7M | +16.4% | 5.154% | 0.05% |
| 3 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 8.9M | $439.2M | +13.2% | 5.090% | 0.60% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2M | $309.3M | β | 3.585% | 0.02% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 5.8M | $289.2M | β | 3.351% | 0.01% |
| 6 | CITADEL ADVISORS LLC | 5.4M | $270.1M | -22.9% | 3.130% | 0.13% |
| 7 | Defiance ETFs, LLC | 3.6M | $180.7M | β | 2.094% | 2.59% |
| 8 | STATE STREET CORP | 3.3M | $164.9M | +8.7% | 1.912% | 0.01% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 3.1M | $151.2M | +8.5% | 1.755% | 0.01% |
| 10 | MORGAN STANLEY | 2.7M | $133.0M | +42.3% | 1.541% | 0.01% |
| 11 | Alyeska Investment Group, L.P. | 1.7M | $84.8M | β | 0.983% | 0.24% |
| 12 | UBS Group AG | 1.5M | $72.8M | +43.5% | 0.844% | 0.01% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2M | $58.8M | +2.2% | 0.681% | 0.01% |
| 14 | NORTHERN TRUST CORP | 1.2M | $57.2M | +13.1% | 0.663% | 0.01% |
| 15 | GOLDMAN SACHS GROUP INC | 1.0M | $51.7M | -17.2% | 0.599% | 0.01% |
| 16 | BANK OF MONTREAL /CAN/ | 945K | $46.9M | -29.4% | 0.543% | 0.02% |
| 17 | VANGUARD FIDUCIARY TRUST CO | 821K | $40.7M | β | 0.472% | 0.01% |
| 18 | BANK OF AMERICA CORP /DE/ | 620K | $30.8M | +55.3% | 0.356% | 0.00% |
| 19 | NATIONAL BANK OF CANADA /FI/ | 609K | $30.2M | +640.9% | 0.350% | 0.03% |
| 20 | Marex Group plc | 590K | $29.3M | -25.1% | 0.339% | 0.08% |
| 21 | PORTLAND INVESTMENT COUNSEL INC. | 589K | $29.2M | -5.3% | 0.339% | 9.38% |
| 22 | Hood River Capital Management LLC | 589K | $29.2M | β | 0.339% | 0.29% |
| 23 | Capital World Investors | 537K | $26.6M | +6.2% | 0.309% | 0.00% |
| 24 | LPL Financial LLC | 534K | $26.5M | +6.5% | 0.307% | 0.01% |
| 25 | Bank of New York Mellon Corp | 517K | $25.6M | +1.2% | 0.297% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in OKLO β a direct measure of their conviction.
Filings activity in OKLO during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new OKLO position in Q1 2026
Institutions that fully closed their OKLO position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 649 | 0.5% | 47.66% | 15.06 pp | $4.77B | 24% |
| Q4 2025 | 652 | +6.5% | 62.72% | 26.17 pp | $6.27B | 29% |
| Q3 2025 | 612 | +32% | 88.89% | +53.33 pp | $8.89B | +150% |
| Q2 2025 | 463 | +65% | 35.56% | +27.73 pp | $3.56B | +354% |
| Q1 2025 | 281 | +24% | 7.83% | 2.18 pp | $784M | 22% |
| Q4 2024 | 226 | +88% | 10.01% | +6.28 pp | $1.00B | +168% |
| Q3 2024 | 120 | +35% | 3.73% | +0.30 pp | $373M | +8.9% |
| Q2 2024 | 89 | β | 3.43% | β | $343M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying OKLO stock.
Based on Q1 2026 13F filings, institutional ownership of Oklo Inc. stands at 47.7%, held across 649 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of OKLO, with approximately 15,907,512 shares worth $0.79B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of OKLO, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for OKLO is 41 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
143 institutions opened new positions in OKLO during Q1 2026, while 146 fully exited. 98 added to existing positions and 405 trimmed.
OKLO institutional ownership fell by 15.06 percentage points quarter-over-quarter, with a net change of -3 holders.
The top 10 institutions account for 66.5% of all reported 13F value in OKLO, and the top 25 account for 80.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Oklo Inc. (OKLO) Institutional Ownership