612 tracked 13F filers disclose a position in OKLO as of the latest SEC 13F filings, a combined $4.1B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $788.9M | 15.9M | ▲+7.3% Added · +1.1M sh | Q1 2026 | |
| 2 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $439.2M | 8.9M | ▲+13% Added · +1.0M sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $309.3M | 6.2M | →First observed position No prior filed position | Q1 2026 | |
| 4 | VAN ECK ASSOCIATES CORP | Withheld | 6.1M | ▲+54% Added · +2.1M sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $289.2M | 5.8M | →First observed position No prior filed position | Q1 2026 | |
| 6 | Defiance ETFs, LLC | $180.7M | 3.6M | ▲New +3.6M sh | Q1 2026 | |
| 7 | MORGAN STANLEY | $133.0M | 2.7M | ▲+42% Added · +798K sh | Q1 2026 | |
| 8 | STATE STREET CORP | $124.4M | 2.4M | ▼−29% Reduced · −948K sh | Q2 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $123.8M | 2.4M | ▼−23% Reduced · −690K sh | Q2 2026 | |
| 10 | Alyeska Investment Group, L.P. | $84.8M | 1.7M | ▲New +1.7M sh | Q1 2026 | |
| 11 | Clear Street Group Inc. | $69.6M | 1.3M | ▲+166% Added · +830K sh | Q2 2026 | |
| 12 | UBS Group AG | $59.8M | 1.2M | ▲+20% Added · +203K sh | Q1 2026 | |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $58.8M | 1.2M | ▲+2.2% Added · +25K sh | Q1 2026 | |
| 14 | NORTHERN TRUST CORP | $57.2M | 1.2M | ▲+13% Added · +134K sh | Q1 2026 | |
| 15 | GOLDMAN SACHS GROUP INC | $51.7M | 1.0M | ▲+15% Added · +133K sh | Q1 2026 | |
| 16 | NORGES BANK | $73.8M | 1.0M | ▲New +1.0M sh | Q4 2025 | |
| 17 | VANGUARD FIDUCIARY TRUST CO | $40.7M | 821K | →First observed position No prior filed position | Q1 2026 | |
| 18 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $33.0M | 666K | ▲18× Added · +629K sh | Q1 2026 | |
| 19 | BANK OF AMERICA CORP /DE/ | $30.8M | 620K | ▲+55% Added · +221K sh | Q1 2026 | |
| 20 | NATIONAL BANK OF CANADA /FI/ | $30.2M | 609K | ▲+641% Added · +527K sh | Q1 2026 | |
| 21 | Marex Group plc | $29.3M | 590K | ▼−25% Reduced · −198K sh | Q1 2026 | |
| 22 | PORTLAND INVESTMENT COUNSEL INC. | $30.8M | 589K | —Held | Q2 2026 | |
| 23 | BANK OF MONTREAL /CAN/ | $26.6M | 537K | ▼−24% Reduced · −169K sh | Q1 2026 | |
| 24 | LPL Financial LLC | $26.5M | 534K | ▲+6.4% Added · +32K sh | Q1 2026 | |
| 25 | JANE STREET GROUP, LLC | $26.4M | 533K | ▲Added Added · +533K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 6 funds opened a new position in OKLO and 25 added to an existing one, while 8 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 365 funds | $347.4B |
| MICROSOFT CORPMSFT | 362 funds | $231.2B |
| AMAZON.COM INCAMZN | 362 funds | $174.5B |
| META PLATFORMS INC-CLASS AMETA | 356 funds | $96.9B |
| APPLE INCAAPL | 354 funds | $267.7B |
| ALPHABET INC-CL AGOOGL | 349 funds | $142.2B |
| JPMORGAN CHASE & COJPM | 342 funds | $55.9B |
| TESLA INCTSLA | 341 funds | $68.0B |
| ELI LILLY & COLLY | 339 funds | $68.4B |
| ALPHABET INC-CL CGOOG | 337 funds | $108.5B |
| BROADCOM INCAVGO | 336 funds | $134.5B |
| JOHNSON & JOHNSONJNJ | 333 funds | $40.6B |
Ranked by how many of OKLO's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 1, 2026 | DeWitte Jacob | Co-Founder, CEO, Director, 10% Owner | Sell (S) | 200 | $8K |
| Sep 1, 2026 | DeWitte Jacob | Co-Founder, CEO, Director, 10% Owner | Sell (S) | 20K | $770K |
| Sep 1, 2026 | DeWitte Jacob | Co-Founder, CEO, Director, 10% Owner | Sell (S) | 40K | $1.5M |
| Sep 1, 2026 | DeWitte Jacob | Co-Founder, CEO, Director, 10% Owner | Sell (S) | 20K | $771K |
| Sep 1, 2026 | DeWitte Jacob | Co-Founder, CEO, Director, 10% Owner | Sell (S) | 40K | $1.5M |
| Sep 1, 2026 | Cochran Caroline | Co-Founder, COO, Director, 10% Owner | Sell (S) | 20K | $771K |
| Sep 1, 2026 | Cochran Caroline | Co-Founder, COO, Director, 10% Owner | Sell (S) | 40K | $1.5M |
| Sep 1, 2026 | Cochran Caroline | Co-Founder, COO, Director, 10% Owner | Sell (S) | 200 | $8K |
| Sep 1, 2026 | Cochran Caroline | Co-Founder, COO, Director, 10% Owner | Sell (S) | 20K | $770K |
| Sep 1, 2026 | Cochran Caroline | Co-Founder, COO, Director, 10% Owner | Sell (S) | 40K | $1.5M |
| Aug 25, 2026 | Narayanadas Vivek | General Counsel & Secretary | Sell (S) | 223 | $9K |
| Aug 24, 2026 | Renner Alexandra | Chief Product Officer | Sell (S) | 557 | $22K |
Connected entities for OKLO
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/OKLO/capital-change-brief"
Use Arkolith's capital_change_brief for OKLO. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for OKLO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.