OKLO INC (OKLO) Institutional Shareholders
OKLO INC (OKLO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $4.08B in OKLO holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of OKLO tracked by InsiderSet, reporting ownership valued at approximately $788.85M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $617.69M, representing an estimated loss of -21.70% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 64% of the total disclosed OKLO value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Mirae Asset Global Etfs Holdings Ltd., Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in OKLO INC (OKLO).
This page ranks the largest institutional OKLO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
661
Total Reported Value
$4.08B
Largest Holder
Blackrock, Inc.
Largest Position
$788.85M
Insider Transactions (90d)
30
Latest Filing Quarter
Q2 2026
New Institutional Positions
74
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 15,907,512 | $788,853,528 | $617,688,691 | -$171,164,837 | -21.70% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.60% | 8,856,496 | $439,193,636 | $343,897,740 | -$95,295,896 | -21.70% | |
| Vanguard Portfolio Management Llc | 0.02% | 6,237,918 | $309,338,354 | $242,218,356 | -$67,119,998 | -21.70% | |
| Vanguard Capital Management Llc | 0.01% | 5,830,933 | $289,155,967 | $226,415,128 | -$62,740,839 | -21.70% | |
| Defiance Etfs, Llc | 2.60% | 3,643,044 | $180,658,552 | $141,459,399 | -$39,199,153 | -21.70% | |
| State Street Corp | 0.01% | 3,326,142 | $164,943,382 | $129,154,094 | -$35,789,288 | -21.70% | |
| Geode Capital Management, Llc | 0.01% | 3,054,149 | $151,188,902 | $118,592,606 | -$32,596,296 | -21.56% | |
| Morgan Stanley | 0.01% | 2,681,738 | $132,987,427 | $104,131,887 | -$28,855,540 | -21.70% | |
| Alyeska Investment Group, L.P. | 0.24% | 1,709,692 | $84,783,626 | $66,387,340 | -$18,396,286 | -21.70% | |
| Ubs Group Ag | 0.01% | 1,206,299 | $59,820,368 | $46,840,590 | -$12,979,778 | -21.70% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,185,731 | $58,800,400 | $46,041,935 | -$12,758,465 | -21.70% | |
| Northern Trust Corp | 0.01% | 1,153,066 | $57,180,544 | $44,773,553 | -$12,406,991 | -21.70% | |
| Goldman Sachs Group Inc | 0.01% | 1,041,926 | $51,669,110 | $40,457,987 | -$11,211,123 | -21.70% | |
| Vanguard Fiduciary Trust Co | 0.01% | 820,630 | $40,695,042 | $31,865,063 | -$8,829,979 | -21.70% | |
| Susquehanna International Group, Llp | 0.04% | 665,979 | $33,025,899 | $25,859,965 | -$7,165,934 | -21.70% | |
| Bank Of America Corp | 0.00% | 620,281 | $30,759,753 | $24,085,511 | -$6,674,242 | -21.70% | |
| National Bank Of Canada | 0.03% | 609,164 | $30,206,050 | $23,653,838 | -$6,552,212 | -21.69% | |
| Marex Group Plc | 0.34% | 589,864 | $29,251,356 | $22,904,419 | -$6,346,937 | -21.70% | |
| Portland Investment Counsel Inc. | 9.38% | 589,480 | $29,232,313 | $22,889,508 | -$6,342,805 | -21.70% | |
| Hood River Capital Management Llc | 0.29% | 589,294 | $29,223,089 | $22,882,286 | -$6,340,803 | -21.70% | |
| Capital World Investors | 0.00% | 537,354 | $26,647,385 | $20,865,456 | -$5,781,929 | -21.70% | |
| Bank Of Montreal | 0.01% | 537,170 | $26,638,261 | $20,858,311 | -$5,779,950 | -21.70% | |
| Lpl Financial Llc | 0.01% | 533,951 | $26,478,630 | $20,733,317 | -$5,745,313 | -21.70% | |
| Jane Street Group, Llc | 0.03% | 533,000 | $26,431,470 | $20,696,390 | -$5,735,080 | -21.70% | |
| Bank Of New York Mellon Corp | 0.00% | 516,886 | $25,632,402 | $20,070,683 | -$5,561,719 | -21.70% | |
| Clear Street Group Inc. | 0.14% | 499,442 | $24,767,329 | $19,393,333 | -$5,373,996 | -21.70% | |
| Cantor Fitzgerald, L. P. | 0.87% | 484,541 | $24,028,388 | $18,814,727 | -$5,213,661 | -21.70% | |
| Nuveen, Llc | 0.01% | 461,143 | $22,868,081 | $17,906,183 | -$4,961,898 | -21.70% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 451,280 | $22,378,976 | $17,523,202 | -$4,855,774 | -21.70% | |
| Deutsche Bank Ag\ | 0.01% | 397,806 | $19,727,199 | $15,446,807 | -$4,280,392 | -21.70% | |
| Mirae Asset Global Investments Co., Ltd. | 0.04% | 352,541 | $18,448,471 | $13,689,167 | -$4,759,304 | -25.80% | |
| Raymond James Financial Inc | 0.01% | 353,804 | $17,545,140 | $13,738,209 | -$3,806,931 | -21.70% | |
| Wells Fargo & Company/Mn | 0.00% | 351,727 | $17,442,147 | $13,657,559 | -$3,784,588 | -21.70% | |
| ARK Invest | Cathie Wood | 0.14% | 351,169 | $17,414,471 | $13,635,892 | -$3,778,579 | -21.70% |
| Bnp Paribas Financial Markets | 0.01% | 331,540 | $16,441,069 | $12,873,698 | -$3,567,371 | -21.70% | |
| Exchange Traded Concepts, Llc | 0.08% | 310,563 | $16,251,761 | $12,059,161 | -$4,192,600 | -25.80% | |
| Swiss National Bank | 0.01% | 324,900 | $16,111,791 | $12,615,867 | -$3,495,924 | -21.70% | |
| Legal & General Group Plc | 0.00% | 318,061 | $15,772,645 | $12,350,309 | -$3,422,336 | -21.70% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.03% | 303,775 | $15,064,202 | $11,795,583 | -$3,268,619 | -21.70% | |
| Barclays Plc | 0.00% | 280,471 | $13,908,555 | $10,890,689 | -$3,017,866 | -21.70% | |
| American Century Companies Inc | 0.01% | 254,218 | $12,607,033 | $9,871,285 | -$2,735,748 | -21.70% | |
| Citadel Advisors Llc | 0.01% | 249,676 | $12,381,433 | $9,694,919 | -$2,686,514 | -21.70% | |
| Darrow Company, Inc. | 4.72% | 232,670 | $12,175,621 | $9,034,576 | -$3,141,045 | -25.80% | |
| Cardiff Park Advisors, Llc | 0.89% | 223,350 | $11,075,927 | $8,672,681 | -$2,403,247 | -21.70% | |
| Citigroup Inc | 0.00% | 205,222 | $10,739,267 | $7,968,770 | -$2,770,497 | -25.80% | |
| Man Group Plc | 0.02% | 209,758 | $10,401,900 | $8,144,903 | -$2,256,997 | -21.70% | |
| Corient Private Wealth Llc | 0.01% | 204,753 | $10,143,447 | $7,950,559 | -$2,192,888 | -21.62% | |
| Trexquant Investment Lp | 0.07% | 203,059 | $10,069,696 | $7,884,781 | -$2,184,915 | -21.70% | |
| Fmr Llc | 0.00% | 199,673 | $9,901,761 | $7,753,303 | -$2,148,458 | -21.70% | |
| Alliancebernstein L.P. | 0.00% | 136,094 | $9,766,105 | $5,284,530 | -$4,481,575 | -45.89% |
Frequently asked questions about OKLO
Who owns the most OKLO stock?
The largest holders of OKLO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for OKLO INC (OKLO).
Is OKLO widely held by superinvestors?
Many widely followed stocks like OKLO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly OKLO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.