How many institutional investors hold ARKB?

3 tracked institutional investors disclosed a position in ARKB (ARK 21SHARES BITCOIN ETF) in their most recent 13F filing.

Who is the largest institutional holder of ARKB?

Cathie Wood, ARK Investment Management, holds the largest disclosed position in ARKB, valued at $289M.

Where does this ARKB ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

ARKB — ARK 21SHARES BITCOIN ETF

Name: ARK 21SHARES BITCOIN ETF (ARKB) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Public company

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying ARKB?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence

Institutional Conviction

Strong distribution · 1 buying vs 2 selling last quarter

Macro Tailwind

Macro conditions are mixed for this sector

Why? — Evidence & Confidence ▾

Of 3 tracked investors who changed their ARKB position last quarter, 1 bought and 2 sold (33% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).

Supporting evidence

+1 tracked investor added or increased positions last quarter (Ken Griffin)
+3 tracked investors reported holding ARKB at their latest filing
+Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource

Contradicting evidence — always shown

−2 tracked investors reduced or exited last quarter (2 reduced, 0 sold out)
−13F data is disclosed up to 45 days after quarter end — positions may have changed since

Know the limits

· 13F disclosure lag (up to 45 days)
· Tracked investors are a sample, not the whole market
· Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.

About ARK 21SHARES BITCOIN ETF (ARKB)

ARK 21SHARES BITCOIN ETF (ARKB) appears in the most recent 13F filings of 3 tracked institutional investors. The largest disclosed position is held by Cathie Wood (ARK Investment Management), valued at $289M. Across recent filings, tracked investors recorded 3 new positions, 11 increased, 8 reduced, and 2 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in ARKB

/100

Mixed Activity

Added / Increased14

Reduced8

Exited2

BearishBullish

Crowded Trade Score™

How many top investors track ARKB

/100

Emerging Interest

3investors

A small number of top investors own this.

UndiscoveredCrowded

151015+

ARKB Ownership Composition

How ARK 21SHARES BITCOIN ETF is held across tracked investor types, based on reported 13F positions.

Dominant Type

Growth & Innovation

83% of tracked value

Institutions

tracked investors

Total Reported

$151.1M

combined 13F value

Growth & Innovation83.1%
Multi-Strategy / Quant16.9%

Growth & Innovation(1)

83.1%

Multi-Strategy / Quant(2)

16.9%

Tracked investors currently reporting ARKB

Investor	Firm	Shares	Market value	% of portfolio	As of
Cathie Wood	ARK Investment Management	6.5M	$125.6M	0.82%	Jun 30, 2026
Izzy Englander	Millennium Management	1.1M	$20.6M	0.01%	Jun 30, 2026
Ken Griffin	Citadel Advisors	251.7K	$4.9M	0.00%	Jun 30, 2026

Cathie WoodJun 30, 2026
ARK Investment Management
Shares
6.5M
Value
$125.6M
% Portfolio
0.82%
Izzy EnglanderJun 30, 2026
Millennium Management
Shares
1.1M
Value
$20.6M
% Portfolio
0.01%
Ken GriffinJun 30, 2026
Citadel Advisors
Shares
251.7K
Value
$4.9M
% Portfolio
0.00%

Recent activity

Investor	Action	Δ %	Current value	Filing date
Izzy Englander	Increased	47.35%	$59.3M	Nov 14, 2024
Izzy Englander	Increased	20.49%	$105M	Feb 14, 2025
Izzy Englander	Increased	22.45%	$113.3M	May 15, 2025
Izzy Englander	Increased	206.81%	$151.3M	Aug 14, 2025
Izzy Englander	Increased	8.94%	$125.3M	Feb 17, 2026
Izzy Englander	Reduced	-60.70%	$38.1M	May 15, 2026
Izzy Englander	Reduced	-37.46%	$20.6M	Aug 14, 2026
Cathie Wood	New	—	$206.5M	Apr 18, 2024
Cathie Wood	Increased	17.41%	$204.9M	Jul 26, 2024
Cathie Wood	Reduced	-7.97%	$199.5M	Oct 31, 2024
Cathie Wood	Reduced	-1.36%	$289.2M	Feb 4, 2025
Cathie Wood	Reduced	-7.44%	$235.9M	May 7, 2025
Cathie Wood	Increased	130.77%	$237M	Jul 30, 2025
Cathie Wood	Increased	8.68%	$199.5M	Feb 11, 2026
Cathie Wood	Reduced	-2.52%	$150.6M	May 12, 2026
Cathie Wood	Reduced	-3.64%	$125.6M	Aug 14, 2026
Ken Griffin	Sold	-100.00%	$0	Nov 14, 2024
Ken Griffin	Increased	83.83%	$16M	May 15, 2025
Ken Griffin	Increased	289.69%	$27.2M	Aug 14, 2025
Ken Griffin	Reduced	-37.18%	$18.1M	Nov 14, 2025
Ken Griffin	Sold	-100.00%	$0	Feb 17, 2026
Ken Griffin	Increased	6.58%	$4.9M	Aug 14, 2026
Ken Griffin	New	—	$2.3M	Aug 14, 2024
Izzy Englander	New	—	$45M	May 15, 2024

Izzy Englander
Increased
$59.3M(47.35%)Nov 14, 2024
Izzy Englander
Increased
$105M(20.49%)Feb 14, 2025
Izzy Englander
Increased
$113.3M(22.45%)May 15, 2025
Izzy Englander
Increased
$151.3M(206.81%)Aug 14, 2025
Izzy Englander
Increased
$125.3M(8.94%)Feb 17, 2026
Izzy Englander
Reduced
$38.1M(-60.70%)May 15, 2026
Izzy Englander
Reduced
$20.6M(-37.46%)Aug 14, 2026
Cathie Wood
New
$206.5MApr 18, 2024
Cathie Wood
Increased
$204.9M(17.41%)Jul 26, 2024
Cathie Wood
Reduced
$199.5M(-7.97%)Oct 31, 2024
Cathie Wood
Reduced
$289.2M(-1.36%)Feb 4, 2025
Cathie Wood
Reduced
$235.9M(-7.44%)May 7, 2025
Cathie Wood
Increased
$237M(130.77%)Jul 30, 2025
Cathie Wood
Increased
$199.5M(8.68%)Feb 11, 2026
Cathie Wood
Reduced
$150.6M(-2.52%)May 12, 2026
Cathie Wood
Reduced
$125.6M(-3.64%)Aug 14, 2026
Ken Griffin
Sold
$0(-100.00%)Nov 14, 2024
Ken Griffin
Increased
$16M(83.83%)May 15, 2025
Ken Griffin
Increased
$27.2M(289.69%)Aug 14, 2025
Ken Griffin
Reduced
$18.1M(-37.18%)Nov 14, 2025
Ken Griffin
Sold
$0(-100.00%)Feb 17, 2026
Ken Griffin
Increased
$4.9M(6.58%)Aug 14, 2026
Ken Griffin
New
$2.3MAug 14, 2024
Izzy Englander
New
$45MMay 15, 2024

Frequently asked questions

How many institutional investors hold ARKB?: 3 tracked institutional investors disclosed a position in ARKB (ARK 21SHARES BITCOIN ETF) in their most recent 13F filing.
Who is the largest institutional holder of ARKB?: Cathie Wood, ARK Investment Management, holds the largest disclosed position in ARKB, valued at $289M.
Did institutional ownership of ARKB increase or decrease?: Across recent 13F filings, tracked investors recorded 3 new positions, 11 increased, 8 reduced, and 2 fully exited ARKB.
Where does this ARKB ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.