Latest Period
Q4 2025
Security Snapshot
Oklo Inc. - Class A Common Stock, par value $0.0001 per share (OKLO) Institutional Ownership
CUSIP: 02156V109
13F Institutional Holders and Ownership History from Q3 2021 to Q1 2026
Institutions Reporting
671
Shares (Excl. Options)
74,619,137
Price
$71.76
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- Type / Class
- Equity / Class A Common Stock, par value $0.0001 per share
- Symbol
- OKLO on NYSE
- Shares outstanding
- 173,435,172
- Price per share
- $53.94
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 74,619,137
- Total reported value
- $5,354,967,082
- % of total 13F portfolios
- 0.01%
- Share change
- +9,474,302
- Value change
- +$600,139,764
- Number of holders
- 671
- Price from insider filings
- $53.94
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- OKLO - Oklo Inc. - Class A Common Stock, par value $0.0001 per share is tracked under CUSIP 02156V109.
- 671 institutions reported positions in Q4 2025.
- 5 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 671 to 328 between Q4 2025 and Q1 2026.
- Reported value moved from $5,354,967,082 to $1,069,734,083.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 671 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 02156V109?
CUSIP 02156V109 identifies OKLO - Oklo Inc. - Class A Common Stock, par value $0.0001 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 02156V109:
Significant Owners of Oklo Inc. - Class A Common Stock, par value $0.0001 per share (OKLO) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| DeWitte Jacob | 12% | -25% | $1,049,279,323 | -$136,279,023 | 21,159,091 | -11% | Jacob DeWitte | 21 Apr 2026 |
| BlackRock, Inc. | 9.2% | +62% | $1,034,732,556 | +$455,193,414 | 14,419,350 | +79% | BlackRock, Inc. | 31 Dec 2025 |
| VANGUARD GROUP INC | 7.8% | +32% | $1,294,178,833 | +$323,940,102 | 11,593,468 | +33% | The Vanguard Group | 30 Sep 2025 |
| Altman Samuel H. | 4.8% | -42% | $162,535,825 | -$81,084,026 | 6,650,402 | -33% | Samuel H. Altman | 06 Mar 2025 |
| Data Collective IV, L.P. | 4.4% | $131,541,335 | 5,382,215 | Matthew Ocko | 31 Dec 2024 |
As of 31 Dec 2025, 671 institutional investors reported holding 74,619,137 shares of Oklo Inc. - Class A Common Stock, par value $0.0001 per share (OKLO). This represents 43% of the company’s total 173,435,172 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Oklo Inc. - Class A Common Stock, par value $0.0001 per share (OKLO) together control 34% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.5% | 14,820,434 | +72% | 0.02% | $1,063,514,343 |
| VANGUARD GROUP INC | 6.7% | 11,637,504 | +0.38% | 0.01% | $835,107,287 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 4.5% | 7,823,237 | +10% | 0.84% | $561,395,487 |
| VAN ECK ASSOCIATES CORP | 2.3% | 3,956,281 | +14% | 0.23% | $283,902,000 |
| STATE STREET CORP | 1.8% | 3,060,220 | +24% | 0.01% | $219,601,387 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6% | 2,816,007 | +7% | 0.01% | $201,670,887 |
| MORGAN STANLEY | 1.1% | 1,884,090 | -18% | 0.01% | $135,202,350 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.67% | 1,160,278 | +8.4% | 0.01% | $83,261,549 |
| NORGES BANK | 0.59% | 1,028,227 | 0.01% | $73,785,570 | |
| NORTHERN TRUST CORP | 0.59% | 1,019,285 | +5.5% | 0.01% | $73,143,892 |
| UBS Group AG | 0.58% | 1,003,080 | -60% | 0.01% | $71,981,021 |
| GOLDMAN SACHS GROUP INC | 0.52% | 909,263 | +85% | 0.01% | $65,248,713 |
| Clear Street Group Inc. | 0.49% | 842,172 | +111% | 0.32% | $60,434,263 |
| CANTOR FITZGERALD, L. P. | 0.46% | 790,801 | +12% | 1.7% | $56,747,880 |
| Marex Group plc | 0.45% | 788,051 | +20% | 0.61% | $56,550,540 |
| BANK OF MONTREAL /CAN/ | 0.41% | 706,273 | +1030% | 0.02% | $50,682,150 |
| PORTLAND INVESTMENT COUNSEL INC. | 0.36% | 622,830 | -19% | 13% | $44,625,544 |
| Bank of New York Mellon Corp | 0.29% | 510,941 | +35% | 0.01% | $36,665,160 |
| Capital World Investors | 0.29% | 505,938 | +5.2% | 0% | $36,306,111 |
| LPL Financial LLC | 0.29% | 501,615 | +2.9% | 0.01% | $35,995,892 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.24% | 414,770 | +91% | 0.01% | $29,763,895 |
| BARCLAYS PLC | 0.23% | 400,773 | +148% | 0.01% | $28,759,470 |
| BANK OF AMERICA CORP /DE/ | 0.23% | 399,305 | -14% | 0% | $28,654,127 |
| WELLS FARGO & COMPANY/MN | 0.21% | 357,173 | +6.8% | 0.01% | $25,630,752 |
| DEUTSCHE BANK AG\ | 0.2% | 352,104 | +320% | 0.01% | $25,266,984 |
Institutional Holders of Oklo Inc. - Class A Common Stock, par value $0.0001 per share (OKLO) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 21,565,363 | $1,069,734,083 | -$4,733,291 | $49.59 | 328 |
| 2025 Q4 | 74,619,137 | $5,354,967,082 | +$600,139,764 | $71.76 | 671 |
| 2025 Q3 | 64,821,474 | $7,231,826,607 | +$1,392,276,072 | $111.63 | 633 |
| 2025 Q2 | 54,037,247 | $3,025,526,482 | +$1,210,811,554 | $55.99 | 471 |
| 2025 Q1 | 34,393,412 | $743,846,419 | -$148,711,672 | $21.63 | 284 |
| 2024 Q4 | 41,314,990 | $878,004,505 | -$16,955,330 | $21.23 | 229 |
| 2024 Q3 | 45,243,814 | $366,091,868 | +$47,251,351 | $8.09 | 117 |
| 2024 Q2 | 39,977,637 | $338,608,593 | +$109,326,363 | $8.47 | 93 |
| 2024 Q1 | 23,708,784 | $270,750,192 | -$26,000,190 | $11.42 | 53 |
| 2023 Q4 | 26,020,463 | $274,825,889 | -$165,222,873 | $10.56 | 37 |
| 2023 Q3 | 41,864,000 | $433,274,528 | -$3,262,818 | $10.35 | 64 |
| 2023 Q2 | 42,090,156 | $439,000,288 | -$67,270,173 | $10.43 | 74 |
| 2023 Q1 | 48,073,284 | $487,949,431 | +$22,100,014 | $10.15 | 71 |
| 2022 Q4 | 47,004,958 | $466,276,234 | -$10,079,589 | $9.92 | 72 |
| 2022 Q3 | 48,596,744 | $474,224,116 | +$24,315,279 | $9.76 | 76 |
| 2022 Q2 | 45,432,316 | $438,816,929 | -$27,927,226 | $9.65 | 72 |
| 2022 Q1 | 47,355,551 | $462,202,000 | -$7,363,269 | $9.76 | 67 |
| 2021 Q4 | 46,964,495 | $462,588,000 | -$2,851,621 | $9.85 | 66 |
| 2021 Q3 | 47,263,446 | $464,430,000 | +$462,957,000 | $9.83 | 70 |