Oklo Inc. (OKLO) Ownership
OKLO ownership summary
as of October 18, 2026- Institutions
- 47.7% of shares outstanding
- Insiders
- 15.35% of shares outstanding
- Shares outstanding
- 186.0M
- Float
- 157.4M shares available to trade
- Short interest
- 19.99% 32.8M shares short
- Days to cover
- 3.39 short interest up 1.8% vs prior month
- Institutions 47.71%
- Insiders 15.35%
- Other investors 36.94%
OKLO top institutional holders
1 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BLACKSTONE ALTERNATIVE SOLUTIONS L.L.C. | 0.00% | — | — | −400,000 (−100.0%) | December 31, 2025 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 1, 0 holders added 0 shares and 1 cut 400K.
OKLO top mutual fund and ETF holders
3 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | SPDR® SSGA US Small Cap Low Volatil ETF | 0.13% | 57K | $1.6M | −354 (−0.6%) | May 10, 2024 |
| 2 | Portland Replacement of Fssl Ful Alt F | 0.02% | 10K | $279,700 | +4,000 (+66.7%) | April 30, 2024 |
| 3 | Range Nuclear Renaissance ETF | 0.02% | 8,900 | $248,933 | — | May 9, 2024 |
Funds report holdings monthly or quarterly; dates differ by fund.
OKLO insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-01 | Jacob Dewitte | Sell | $50.39 | 140,000 | $7.1M |
| 2026-04-01 | Jacob Dewitte | Sell | $50.25 | 60,000 | $3.0M |
| 2026-04-01 | Richard Craig Bealmear | Sell | $51.08 | 16,342 | $834,749 |
| 2026-03-13 | Jacob Dewitte | Sell | $60.00 | 72,960 | $4.4M |
| 2026-03-13 | Jacob Dewitte | Sell | $60.00 | 44,828 | $2.7M |
| 2026-03-13 | Richard Craig Bealmear | Sell | $60.00 | 72,090 | $4.3M |
| 2026-03-09 | William Carroll Murphy Goodwin | Sell | $56.69 | 2,820 | $159,866 |
| 2026-03-02 | Jacob Dewitte | Sell | $62.60 | 60,001 | $3.8M |
| 2026-03-02 | Jacob Dewitte | Sell | $63.59 | 139,999 | $8.9M |
| 2026-02-02 | Jacob Dewitte | Sell | $74.45 | 60,000 | $4.5M |
| 2026-02-02 | Jacob Dewitte | Sell | $75.18 | 140,000 | $10.5M |
| 2026-02-02 | Richard Craig Bealmear | Sell | $76.93 | 9,726 | $748,221 |
| 2026-01-09 | Jacob Dewitte | Sell | $111.38 | 26,740 | $3.0M |
| 2026-01-09 | Jacob Dewitte | Sell | $112.03 | 64,888 | $7.3M |
| 2026-01-08 | Jacob Dewitte | Sell | $100.00 | 1,255 | $125,500 |
| 2026-01-08 | Jacob Dewitte | Sell | $100.01 | 3,455 | $345,535 |
| 2026-01-07 | Jacob Dewitte | Sell | $98.03 | 92,005 | $9.0M |
| 2026-01-07 | Jacob Dewitte | Sell | $99.25 | 231,657 | $23.0M |
| 2026-01-05 | Jacob Dewitte | Sell | $90.29 | 200,000 | $18.1M |
| 2025-12-22 | Jacob Dewitte | Sell | $82.32 | 840,000 | $69.1M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
OKLO shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns OKLO
Institutional investors own 47.7% of Oklo's shares and insiders 15.35%. The largest holder is BLACKSTONE ALTERNATIVE SOLUTIONS L.L.C. with 0.00% of the shares (0), as of December 31, 2025. Among the top 1 institutions, 0 added shares and 1 reduced their stake in the latest filings. Short interest is 19.99% of the float, or 3.39 days of average trading volume. The share count rose 154.1% since 2020.
Related: OKLO analyst forecast, OKLO key metrics. See the OKLO stock overview for the latest quote and news.
OKLO ownership FAQ
Who owns the most Oklo stock?
The largest shareholders of Oklo are BLACKSTONE ALTERNATIVE SOLUTIONS L.L.C. (0.00%).
What percentage of Oklo is owned by institutions?
Institutions hold 47.7% of Oklo's shares outstanding; insiders hold 15.35%.
Which funds own Oklo?
The largest fund holders of Oklo are SPDR® SSGA US Small Cap Low Volatil ETF (0.13%), Portland Replacement of Fssl Ful Alt F (0.02%), Range Nuclear Renaissance ETF (0.02%).
What is Oklo's short interest?
32.8M shares of Oklo were sold short, 19.99% of the float; at the average daily volume it would take 3.39 days to cover.
Are insiders buying or selling Oklo?
Of the latest 20 reported insider transactions in Oklo (since December 22, 2025), 0 were purchases and 20 were sales.
How many shares of Oklo are outstanding?
Oklo has 186.0M shares outstanding, of which 157.4M are in the public float.