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Equibles

OKLO

Oklo Inc.

Company with tickers: OKLO

CIK
1849056
CUSIP
02156V109
Shares Outstanding
173,990,987
13F Activity (30d)
368 filings 357 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 684
Total Value: $5,864,517,313
Total Shares: 118,260,088
Showing 1–100 of 741 holdings by value · page 1 of 8

Institutional Ownership Trend

21 quarters

Superinvestors Holding OKLO

All superinvestors →
Ray Dalio $2,725,268

Holder Concentration

Across 684 13F filers · Δ vs Dec 31, 2025
Top Holder
13.5%
Dec 2023 → Mar 2026 · range 11.2% – 17.5%
−0.1 pts
Top 5
41.7%
Dec 2023 → Mar 2026 · range 40.1% – 58.9%
−5.6 pts
Top 10
62.2%
Dec 2023 → Mar 2026 · range 57.7% – 81.2%
−2.2 pts
HHI
500
Dec 2023 → Mar 2026 · range 463 – 883
Broadly held−68

Quarterly Activity

vs Dec 31, 2025
New
131
Increased
287
Decreased
172
Sold Out
143
Unchanged
94
Holder count: -12
Institutional value: -25.3%
Shares held: +8.2%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega VAN ECK ASSOCIATES CORP +2,125,236 6,081,517
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP +1,260,177 8,968,379
Mega BlackRock, Inc. +1,087,078 15,907,512
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. +1,033,259 8,856,496
Mega MORGAN STANLEY +797,647 2,681,738

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega CITADEL ADVISORS LLC −1,614,896 5,445,876
Large NOMURA HOLDINGS INC −958,892 461,372
Mega D. E. Shaw & Co., Inc. −884,501 662,600
Mega BARCLAYS PLC −482,002 405,971
Mega BANK OF MONTREAL /CAN/ −392,603 944,770

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 6,237,918 $309,338,353
Mega VANGUARD CAPITAL MANAGEMENT LLC 5,830,933 $289,155,967
Mid Defiance ETFs, LLC 3,643,044 $180,658,551
Large Alyeska Investment Group, L.P. 1,709,692 $84,783,626
Mega VANGUARD FIDUCIARY TRUST CO 820,630 $40,695,041

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 11,637,504 $835,107,285
Mega NORGES BANK 1,028,227 $73,785,569
Mid Sculptor Capital LP 418,900 $30,060,264
Mid LAKEWOOD CAPITAL MANAGEMENT, LP 240,000 $17,222,400
Large Jain Global LLC 230,199 $16,519,080
Filter: New 131 Increased 287 Reduced 172 Sold out 143 Unchanged 94
Showing 100 of 741
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $788,853,511 13.45% 15,907,512
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $439,193,636 7.49% 8,856,496
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $309,338,353 5.27% 6,237,918
Mega VAN ECK ASSOCIATES CORP $301,582,427 5.14% 6,081,517
Mega VANGUARD CAPITAL MANAGEMENT LLC $289,155,967 4.93% 5,830,933
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $252,700,722 4.31% 5,095,800
Mega JANE STREET GROUP, LLC $243,541,449 4.15% 4,911,100
Mega JANE STREET GROUP, LLC $191,675,268 3.27% 3,865,200
Mega CITADEL ADVISORS LLC $190,425,600 3.25% 3,840,000
Mid Defiance ETFs, LLC Mutual Fund $180,658,551 3.08% 3,643,044
Mega STATE STREET CORP $164,943,381 2.81% 3,326,142
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $159,015,294 2.71% 3,206,600
Mega GEODE CAPITAL MANAGEMENT, LLC $151,455,248 2.58% 3,054,149
Mega MORGAN STANLEY $132,987,383 2.27% 2,681,738
Large Alyeska Investment Group, L.P. $84,783,626 1.45% 1,709,692
Mega CITADEL ADVISORS LLC $67,253,958 1.15% 1,356,200
Mega UBS Group AG $59,820,365 1.02% 1,206,299
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $58,800,400 1.00% 1,185,731
Mega NORTHERN TRUST CORP Bank $57,180,539 0.98% 1,153,066
Mega GOLDMAN SACHS GROUP INC $51,669,109 0.88% 1,041,926
Mega VANGUARD FIDUCIARY TRUST CO Bank $40,695,041 0.69% 820,630
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $33,025,898 0.56% 665,979
Large Select Equity Group, L.P. $32,099,607 0.55% 647,300
Mega BANK OF AMERICA CORP /DE/ Bank $30,759,732 0.52% 620,281
Large NATIONAL BANK OF CANADA /FI/ Bank $30,208,441 0.52% 609,164
Large Walleye Trading LLC $30,155,679 0.51% 608,100
Mid CANTOR FITZGERALD, L. P. $29,754,000 0.51% 600,000
Large Marex Group plc $29,251,354 0.50% 589,864
Small PORTLAND INVESTMENT COUNSEL INC. $29,232,313 0.50% 589,480
Mid Hood River Capital Management LLC $29,223,089 0.50% 589,294
Mega Capital World Investors $26,647,384 0.45% 537,354
Mega BANK OF MONTREAL /CAN/ Bank $26,638,257 0.45% 537,170
Mega LPL Financial LLC $26,478,630 0.45% 533,951
Mega JANE STREET GROUP, LLC $26,431,470 0.45% 533,000
Mega Bank of New York Mellon Corp Bank $25,632,371 0.44% 516,886
Large Clear Street Group Inc. $24,767,328 0.42% 499,442
Large PEAK6 LLC $24,675,984 0.42% 497,600
Mid CANTOR FITZGERALD, L. P. $24,028,388 0.41% 484,541
Mega Nuveen, LLC $22,868,080 0.39% 461,143
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $22,378,970 0.38% 451,280
Large NOMURA HOLDINGS INC $21,675,789 0.37% 437,100
Mega BANK OF MONTREAL /CAN/ Bank $20,212,884 0.34% 407,600
Mega DEUTSCHE BANK AG\ Bank $19,727,196 0.34% 397,806
Mega D. E. Shaw & Co., Inc. $18,725,184 0.32% 377,600
Large CAPITAL FUND MANAGEMENT S.A. $18,080,514 0.31% 364,600
Mega RAYMOND JAMES FINANCIAL INC $17,545,139 0.30% 353,804
Mega WELLS FARGO & COMPANY/MN $17,442,141 0.30% 351,727
Large ARK Investment Management LLC $17,414,470 0.30% 351,169
Mega BNP PARIBAS ARBITRAGE, SA $16,441,068 0.28% 331,540
Large Mirae Asset Global Investments Co., Ltd. $16,433,679 0.28% 331,391
Mega Swiss National Bank Bank $16,111,791 0.27% 324,900
Mega Legal & General Group Plc $15,772,643 0.27% 318,061
Large PEAK6 LLC $15,288,597 0.26% 308,300
Mega JPMORGAN CHASE & CO $15,226,855 0.26% 307,055
Large Connor, Clark & Lunn Investment Management Ltd. $15,064,202 0.26% 303,775
Mid EXCHANGE TRADED CONCEPTS, LLC $14,827,161 0.25% 298,995
Mega D. E. Shaw & Co., Inc. $14,133,150 0.24% 285,000
Mega BARCLAYS PLC $13,908,555 0.24% 280,471
Mega AMERICAN CENTURY COMPANIES INC $12,606,670 0.21% 254,218
Mega CITADEL ADVISORS LLC $12,381,432 0.21% 249,676
Small CARDIFF PARK ADVISORS, LLC $11,075,926 0.19% 223,350
Large Man Group plc $10,401,898 0.18% 209,758
Mega Sumitomo Mitsui Trust Group, Inc. $10,262,452 0.17% 206,946
Large Corient Private Wealth LLC $10,153,701 0.17% 204,753
Large Trexquant Investment LP $10,069,695 0.17% 203,059
Large CREDIT AGRICOLE S A $9,918,000 0.17% 200,000
Mega FMR LLC $9,901,783 0.17% 199,673
Large Centiva Capital, LP $9,868,410 0.17% 199,000
Mid OpenArc Corporate Advisory, LLC $9,403,255 0.16% 189,620
Mega CITIGROUP INC $9,358,574 0.16% 188,719
Large TUDOR INVESTMENT CORP ET AL $9,020,371 0.15% 181,899
Large Rockefeller Capital Management L.P. $9,014,915 0.15% 181,789
Mid Quadrature Capital Ltd $8,810,605 0.15% 177,669
Mega RHUMBLINE ADVISERS $8,549,117 0.15% 172,396
Large CIBC Bancorp USA Inc. Bank $8,312,027 0.14% 167,615
Mega Amundi $8,173,621 0.14% 164,824
Mega California Public Employees Retirement System Pension $8,024,257 0.14% 161,812
Mega Mitsubishi UFJ Asset Management Co., Ltd. $7,989,097 0.14% 161,103
Mega TWO SIGMA INVESTMENTS, LP $7,950,120 0.14% 160,317
Large Point72 Asset Management, L.P. $7,691,409 0.13% 155,100
Mega ROYAL BANK OF CANADA Bank $7,456,846 0.13% 150,370
Large AVIVA PLC $7,355,883 0.13% 148,334
Large Parallax Volatility Advisers, L.P. $7,304,607 0.12% 147,300
Mega UBS Group AG $7,272,770 0.12% 146,658
Mid Foundations Investment Advisors, LLC Endowment $7,215,938 0.12% 145,512
Large Cetera Investment Advisers $7,106,197 0.12% 143,299
Mega DIMENSIONAL FUND ADVISORS LP $7,065,680 0.12% 142,482
Mega PRICE T ROWE ASSOCIATES INC /MD/ $7,006,719 0.12% 141,293
Mega ALLIANCEBERNSTEIN L.P. $6,748,901 0.12% 136,094
Mid WINTON GROUP Ltd $6,663,854 0.11% 134,379
Mid Jump Financial, LLC $6,586,642 0.11% 132,822
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $6,505,612 0.11% 131,188
Mid Caprock Group, LLC $6,501,992 0.11% 131,115
Mega Invesco Ltd. $6,472,286 0.11% 130,516
Mid Quantbot Technologies LP $6,404,201 0.11% 129,143
Mega HSBC HOLDINGS PLC $6,296,689 0.11% 126,975
Large CAPITAL FUND MANAGEMENT S.A. $6,233,463 0.11% 125,700
Large KLP KAPITALFORVALTNING AS $6,154,119 0.10% 124,100
Large LMR Partners LLP $5,970,636 0.10% 120,400
Large Walleye Trading LLC $5,950,800 0.10% 120,000

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