OKLO INC (OKLO): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in OKLO · Utilities. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
20
13F filers
Aggregate Value
$120.6M
Across holders
Last Price
$27.24
2026-10-19
Sector
Utilities
GICS
Quarterly fund activity15 increased4 reduced3 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 1.07M | $55.8M | 46.3% | 0.0% | Added | — | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 279K | $14.6M | 12.1% | 0.0% | Added | +$11.6M | Q2 2026 |
| Rockefeller Capital Management L.P. CIK 0001739439 | Hedge Fund | 253K | $13.2M | 11.0% | 0.0% | Added | $-24.5M | Q2 2026 |
| PineBridge Investments, L.P. CIK 0001531721 | Hedge Fund | 52K | $5.8M | 4.8% | 0.0% | Added | — | Q3 2025 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 85K | $4.4M | 3.7% | 0.0% | Added | +$2.7M | Q2 2026 |
| Brevan Howard Capital Management LP CIK 0001512857 | Hedge Fund | 82K | $4.3M | 3.5% | 0.0% | Added | +$3.8M | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 74K | $3.9M | 3.2% | 0.0% | Added | +$2.4M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 73K | $3.8M | 3.1% | 0.0% | Reduced | +$2.1M | Q2 2026 |
| Holocene Advisors, LP CIK 0001700574 | Hedge Fund | 67K | $3.5M | 2.9% | 0.0% | Added | +$1.1M | Q2 2026 |
| Bridgewater Associates, LP CIK 0001350694 | Hedge Fund | 56K | $2.9M | 2.4% | 0.0% | Added | +$65K | Q2 2026 |
Added
Hedge Fund
$55.8M· 46.3% of total· 0.0% port· 1.07M sh· — QoQ· Q2 2026
Added
Hedge Fund
$14.6M· 12.1% of total· 0.0% port· 279K sh· +$11.6M QoQ· Q2 2026
Added
Hedge Fund
$13.2M· 11.0% of total· 0.0% port· 253K sh· $-24.5M QoQ· Q2 2026
Added
Hedge Fund
$5.8M· 4.8% of total· 0.0% port· 52K sh· — QoQ· Q3 2025
Added
Hedge Fund
$4.4M· 3.7% of total· 0.0% port· 85K sh· +$2.7M QoQ· Q2 2026
Added
Hedge Fund
$4.3M· 3.5% of total· 0.0% port· 82K sh· +$3.8M QoQ· Q2 2026
Added
Hedge Fund
$3.9M· 3.2% of total· 0.0% port· 74K sh· +$2.4M QoQ· Q2 2026
Reduced
Hedge Fund
$3.8M· 3.1% of total· 0.0% port· 73K sh· +$2.1M QoQ· Q2 2026
Added
Hedge Fund
$3.5M· 2.9% of total· 0.0% port· 67K sh· +$1.1M QoQ· Q2 2026
Added
Hedge Fund
$2.9M· 2.4% of total· 0.0% port· 56K sh· +$65K QoQ· Q2 2026
Added
Hedge Fund
$1.7M· 1.4% of total· 0.0% port· 32K sh· +$1.6M QoQ· Q2 2026
Reduced
Hedge Fund
$1.5M· 1.2% of total· 0.0% port· 28K sh· $-69.5M QoQ· Q2 2026
Added
Hedge Fund
$1.3M· 1.1% of total· 0.0% port· 26K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$1.2M· 1.0% of total· 0.0% port· 23K sh· +$1.0M QoQ· Q2 2026
Added
Hedge Fund
$1.0M· 0.9% of total· 0.0% port· 20K sh· — QoQ· Q2 2026
Added
Hedge Fund
$685K· 0.6% of total· 0.0% port· 13K sh· — QoQ· Q2 2026
Added
Hedge Fund
$489K· 0.4% of total· 0.0% port· 9K sh· +$65K QoQ· Q2 2026
Unchanged
Hedge Fund
$226K· 0.2% of total· 0.0% port· 4K sh· +$0 QoQ· Q2 2026
Reduced
Hedge Fund
$186K· 0.2% of total· 0.0% port· 4K sh· $-2.0M QoQ· Q2 2026
Added
Hedge Fund
$51K· 0.0% of total· 0.0% port· 972 sh· — QoQ· Q2 2026
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Recent insider activity
Form 4 purchases and sales · 24 Jul 2026 – 21 Oct 20260 buyers · $08 sellers · $20.8M28 transactions
| Insider ⇅ | Trades ⇅ | Bought ⇅ | Sold ⇅ | Largest ⇅ | Latest ▼ | |
|---|---|---|---|---|---|---|
| Bealmear Richard Craig Chief Financial Officer | 2 0 buy · 2 sell | — | $1.2M | $638K | 1 Oct 2026SEC ↗ | |
| Cochran Caroline Co-Founder, COO | 10 0 buy · 10 sell | — | $9.3M | $1.7M | 1 Oct 2026SEC ↗ | |
| DeWitte Jacob Co-Founder, CEO | 10 0 buy · 10 sell | — | $9.3M | $1.7M | 1 Oct 2026SEC ↗ | |
| Goodwin William Carroll Murphy Chief Strategy Officer | 2 0 buy · 2 sell | — | $527K | $461K | 28 Sept 2026SEC ↗ | |
| Hanson John Chief of Staff | 1 0 buy · 1 sell | — | $41K | $41K | 28 Sept 2026SEC ↗ | |
| Renner Alexandra Chief Product Officer | 1 0 buy · 1 sell | — | $41K | $41K | 28 Sept 2026SEC ↗ | |
| Jansen John M Director | 1 0 buy · 1 sell | — | $233K | $233K | 14 Sept 2026SEC ↗ | |
| Narayanadas Vivek General Counsel & Secretary | 1 0 buy · 1 sell | — | $130K | $130K | 24 Aug 2026SEC ↗ |
Distinct buyers and sellers may overlap. “Largest” is the largest reported transaction value in this window. Expand a row to see up to five recent filings.