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US ˙ NYSE ˙ US02156V1098

SecurityOKLO / Oklo Inc.
InstitutionState Street Corp
Latest Disclosed Ownership3,326,142 shares
Latest Disclosed Value $ 164,943,382
State Street Corp reports 8.69% increase in ownership of OKLO / Oklo Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 3,326,142 shares of Oklo Inc. (US:OKLO) valued at $164,943,382 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,060,220 shares of Oklo Inc.. This represents a change in shares of 8.69% during the quarter. The current value of the position is $193,215,589 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F OKLO COM CL A 02156V109 3,326,142 265,922 8.69 164,943 -24.89 0.0057
2026-02-13 2025-12-31 13F OKLO COM CL A 02156V109 3,060,220 584,184 23.59 219,601 -20.55 0.0074
2025-11-14 2025-09-30 13F OKLO COM CL A 02156V109 2,476,036 337,378 15.78 276,400 130.83 0.0096
2025-08-14 2025-06-30 13F OKLO COM CL A 02156V109 2,138,658 1,752,946 454.47 119,743 1,335.42 0.0045
2025-05-15 2025-03-31 13F OKLO COM CL A 02156V109 385,712 -41,223 -9.66 8,343 -7.96 0.0003
2025-02-14 2024-12-31 13F OKLO COM CL A 02156V109 426,935 69,827 19.55 9,064 213.71 0.0004
2024-11-14 2024-09-30 13F OKLO COM CL A 02156V109 357,108 35,180 10.93 2,889 5.98 0.0001
2024-08-14 2024-06-30 13F OKLO COM CL A 02156V109 321,928 263,828 454.09 2,727 311.16 0.0001
2024-05-15 2024-03-31 13F ALTC ACQUISITION COM CL A 02156V109 58,100 58,100 664 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.