Company · Ownership research

Oklo Inc. OKLO

CIK 0001849056 · CUSIP 02156V109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 02156V109 (OKLO), not CUSIP 02156V909 (OKLO), CUSIP 02156V959 (OKLO), and does not merge CUSIPs.

This page lists the top 20 of 293 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. CIK 1705339 · View history	$101.59M 4,696,881 shares	0.22%	-232.26K(-4.70%)Reduced	SEC filing ↗ May 15, 2025	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$94.77M 4,381,397 shares	0.00%	+37.72K(+0.90%)Added	SEC filing ↗ May 9, 2025	▾
03	VAN ECK ASSOCIATES CORP CIK 869178 · View history	$59.87M 2,767,694 shares	0.08%	+946.63K(+52.00%)Added	SEC filing ↗ May 15, 2025	▾
04	MORGAN STANLEY CIK 895421 · View history	$42.47M 1,963,618 shares	0.00%	+1.39M(+243.30%)Added	SEC filing ↗ May 15, 2025	▾
05	BlackRock, Inc. CIK 2012383 · View history	$31.96M 1,477,744 shares	0.00%	+101.49K(+7.40%)Added	SEC filing ↗ May 2, 2025	▾
06	UBS Group AG CIK 1610520 · View history	$27.70M 1,280,591 shares	0.01%	-576.63K(-31.00%)Reduced	SEC filing ↗ May 13, 2025	▾
07	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$23.72M 1,096,400 shares	0.04%	+672.10K(+158.40%)Added	SEC filing ↗ May 14, 2025	▾
08	Compound Planning, Inc. CIK 1978879 · View history	$20.87M 964,827 shares	0.95%	+56.44K(+6.20%)Added	SEC filing ↗ May 14, 2025	▾
09	PORTLAND INVESTMENT COUNSEL INC. CIK 1081668 · View history	$17.36M 807,580 shares	5.27%	+5.00K(+0.60%)Added	SEC filing ↗ May 14, 2025	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$16.45M 759,943 shares	0.00%	+31.30K(+4.30%)Added	SEC filing ↗ May 13, 2025	▾
11	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$12.59M 582,002 shares	0.01%	+570.53K(+4,974.10%)Added	SEC filing ↗ May 15, 2025	▾
12	CloudAlpha Capital Management Limited/Hong Kong CIK 1745907 · View history	$11.67M 539,706 shares	1.78%	+539.71KNew	SEC filing ↗ May 7, 2025	▾
13	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$10.54M 487,098 shares	0.00%	+248.75K(+104.40%)Added	SEC filing ↗ May 16, 2025	▾
14	READYSTATE ASSET MANAGEMENT LP CIK 1900923 · View history	$9.56M 442,095 shares	0.48%	-61.79K(-12.30%)Reduced	SEC filing ↗ May 6, 2025	▾
15	Sculptor Capital LP CIK 1054587 · Amended · View history	$9.37M 433,400 shares	0.21%	+210.80K(+94.70%)Added	SEC filing ↗ May 15, 2025	▾
16	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history	$8.88M 410,432 shares	0.00%	-12.00K(-2.80%)Reduced	SEC filing ↗ Sep 15, 2025	▾
17	CITADEL ADVISORS LLC CIK 1423053 · View history	$8.81M 407,433 shares	0.01%	+401.32K(+6,567.20%)Added	SEC filing ↗ May 15, 2025	▾
18	STATE STREET CORP CIK 93751 · View history	$8.34M 385,712 shares	0.00%	-41.22K(-9.70%)Reduced	SEC filing ↗ May 15, 2025	▾
19	CARDIFF PARK ADVISORS, LLC CIK 1910000 · View history	$7.55M 349,240 shares	0.73%	+34.11K(+10.80%)Added	SEC filing ↗ May 15, 2025	▾
20	Jump Financial, LLC CIK 1831577 · Amended · View history	$6.93M 320,352 shares	0.10%	+320.35KNew	SEC filing ↗ Aug 13, 2026	▾

Showing 20 / 293 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

293

Cancelled or null records excluded

Disclosed shares

34,541,734

Not deduplicated across managers

Disclosed value

$747.05M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Oklo Inc. · Q1 2025

Explore all 293 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.