Stock ownership · SEC 13F · Q4 2025

NEBIUS GROUP N.V.

Who owns NEBIUS GROUP N.V. (CUSIP N97284108)? A look at the institutions behind it, how tightly they hold it, and the latest quarter's moves.

$15.5M
Reported value
3
Institutions
100%
Top-5 share

The verdict

As of Q4 2025, 3 institutions report $15.5M in NEBIUS GROUP N.V. positions, ownership that is dominated by its top few institutional owners.

3
institutions hold it
$15.5M
reported 13F value
100%
held by top 5

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP N97284108 · Q4 2025 $15M reported

VALUE-TRACE · HOLDERS-FOCUS · CONC-DOM · PHOTO-UNK · ACTIVITY-QUIET · BOOK-MID

  • VALUE-TRACE $15.5M
  • HOLDERS-FOCUS 3 filers
  • CONC-DOM 100% top-5
  • PHOTO-UNK No peer
  • ACTIVITY-QUIET 0 new
  • BOOK-MID 7Q history

Read with: Ownership concentration guide - NEBIUS GROUP N.V.'s top-five holders account for 100% of reported value — read concentration before treating any single filer as a signal.

Largest institutional holders of NEBIUS GROUP N.V.
  1. 1
    Oak Grove Capital LLC $15.5M
  2. 2
    Bell Investment Advisors, Inc $3K
  3. 3
    Compass Financial Services Inc $2K

Top 3 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a NEBIUS GROUP N.V. position has risen from 1 to 3 over the last 7 quarters of 13F filings.

02468 Q1'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 3
Distinct 13F filers holding NEBIUS GROUP N.V., by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Oak Grove Capital LLC 184,771 $15.5M 100.0%
2 Bell Investment Advisors, Inc 31 $3K 0.0%
3 Compass Financial Services Inc 19 $2K 0.0%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among NEBIUS GROUP N.V.'s reported holders for Q4 2025, by reported value:

Sole discretion (SOLE)
100.0%

Frequently Asked Questions

How many institutions hold NEBIUS GROUP N.V.?▼
NEBIUS GROUP N.V. is held by 3 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
What is the total institutional value of NEBIUS GROUP N.V.?▼
Institutions report $15.5M of NEBIUS GROUP N.V. as of Q4 2025.
How concentrated is ownership of NEBIUS GROUP N.V.?▼
The top five institutional holders account for 100% of the reported institutional value in NEBIUS GROUP N.V., making ownership dominated by its top few institutional owners.
Who is the largest institutional holder of NEBIUS GROUP N.V.?▼
Oak Grove Capital LLC is the largest reported holder of NEBIUS GROUP N.V. with $15.5M across 184,771 shares as of Q4 2025.

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-09-26.