Stock ownership · SEC 13F · Q4 2025

ISHARES BITCOIN ETF

Who owns ISHARES BITCOIN ETF (CUSIP 46438F101)? A look at the institutions behind it, how tightly they hold it, and the latest quarter's moves.

$126.9M
Reported value
17
Institutions
98%
Top-5 share

The verdict

As of Q4 2025, 17 institutions collectively report $126.9M in ISHARES BITCOIN ETF, a stock that is owned by a middling slice of the institutional filer base; ownership here is dominated by its top few institutional owners.

17
institutions hold it
$126.9M
reported 13F value
98%
held by top 5
#75
of 216 by value

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

How to read this page

This page summarizes how large institutional investment managers report holding this security in their quarterly SEC Form 13F-HR filings. A 13F filing is a mandatory disclosure that any manager with at least $100 million in qualifying US-listed equity assets must submit to the Securities and Exchange Commission within 45 days of the end of each calendar quarter. The figures here therefore describe long equity positions as of a specific reporting quarter, not live market quotes, and not a manager's complete book. 13F disclosures deliberately exclude short positions, cash, most derivatives, non-US listings, and small holdings, so the institutional ownership shown is a floor rather than a full picture. "Holders" counts the distinct managers reporting a position; "reported value" sums the market value those managers disclosed; and "top-5 concentration" measures how much of that reported value sits with the five largest holders. Use these numbers to understand institutional interest and how it shifts quarter over quarter, never as a recommendation to buy or sell. Every figure is rendered directly from the underlying filings and can be verified against the original documents on SEC EDGAR. This page is provided for informational purposes only and is not financial advice, consult a licensed financial advisor before making investment decisions.

Reported value

$126.9M

Institutional 13F value

Institutions

17

Reporting holders

Top-5 concentration

98%

Held by 5 largest

New buyers

15

Opened Q4 2025

Broadly held Concentrated ownership

Top-5 holder concentration

0%100%98%
Top-5 holder concentration
Share of reported value held by the 5 largest institutions · Q4 2025
Ownership breadth 75.0%

ISHARES BITCOIN ETF is more widely held than about 75% of the broadly-held stocks we track (by number of reporting institutions), as of Q4 2025.

Largest institutional holders of ISHARES BITCOIN ETF
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Top 6 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a ISHARES BITCOIN ETF position has risen from 1 to 17 over the last 8 quarters of 13F filings.

05101520 Q1'24Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 17
Distinct 13F filers holding ISHARES BITCOIN ETF, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 MARINER INVESTMENT GROUP LLC 2,146,536 $106.6M 84.0%
2 Aristides Capital LLC 320,713 $15.9M 12.5%
3 DiPaolo Financial Group, Inc. 18,773 $932K 0.7%
4 THRYVE WEALTH MANAGEMENT LLC 16,420 $815K 0.6%
5 OakTrust Wealth Advisors, LLC 8,774 $436K 0.3%
6 SOUTHERN CAPITAL SERVICES INC /ADV 8,734 $434K 0.3%
7 Tempo Wealth, LLC 8,515 $423K 0.3%
8 Coastline Complete Wealth LLC 7,013 $348K 0.3%
9 Diesslin Group, Inc. 6,479 $322K 0.3%
10 DGS Capital Management, LLC 5,931 $294K 0.2%
11 NATIONAL MUTUAL FUNDS MANAGEMENT LTD 5,035 $251K 0.2%
12 Compass Financial Services Inc 1,025 $51K 0.0%
13 TD Capital Management LLC 781 $39K 0.0%
14 Anchor Investment Management, LLC 525 $26K 0.0%
15 MidFirst Bank 331 $16K 0.0%
16 Strategic Investment Solutions, Inc. /IL 200 $10K 0.0%
17 CHELSEA COUNSEL CO 15 $745 0.0%

Latest Quarter Activity · Q4 2025

What the data says about ISHARES BITCOIN ETF

This stock’s institutional ownership is top-heavy, concentrated in a small set of large positions.

  • See how ISHARES BITCOIN ETF's holder count and reported value have shifted quarter over quarter. Biggest movers
  • Check where this stock ranks among the most widely held names before treating one position as a signal. Most-held stocks
  • Review the gaps in 13F reporting before drawing conclusions from it. 13F limitations

Informational only, not investment advice. 13F is a 45-day-lagged snapshot of long US-equity positions; holdings may have changed.

Frequently Asked Questions

How many institutions hold ISHARES BITCOIN ETF?
ISHARES BITCOIN ETF is held by 17 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
What is the total institutional value of ISHARES BITCOIN ETF?
Institutions report $126.9M of ISHARES BITCOIN ETF as of Q4 2025.
How concentrated is ownership of ISHARES BITCOIN ETF?
The top five institutional holders account for 98% of the reported institutional value in ISHARES BITCOIN ETF, making ownership dominated by its top few institutional owners.
Who is the largest institutional holder of ISHARES BITCOIN ETF?
MARINER INVESTMENT GROUP LLC is the largest reported holder of ISHARES BITCOIN ETF with $106.6M across 2,146,536 shares as of Q4 2025.
Where does this ISHARES BITCOIN ETF data come from?
Every figure is rendered live from SEC Form 13F-HR filings in the EDGAR system. 13F is a mandatory quarterly disclosure of long US-listed equity positions, filed within 45 days of each quarter-end.

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.