How many institutional investors hold ORKA?

3 tracked institutional investors disclosed a position in ORKA (ORUKA THERAPEUTICS INC) in their most recent 13F filing.

Who is the largest institutional holder of ORKA?

Andreas Halvorsen, Viking Global Investors, holds the largest disclosed position in ORKA, valued at $143M.

Where does this ORKA 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.

ORKA — ORUKA THERAPEUTICS INC

Name: ORUKA THERAPEUTICS INC (ORKA) — 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 ORKA?

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

Confidence

Institutional Conviction

Strong distribution · 0 buying vs 1 selling last quarter

Macro Tailwind

Macro conditions are mixed for this sector

Why? — Evidence & Confidence ▾

Of 1 tracked investors who changed their ORKA position last quarter, 0 bought and 1 sold (0% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).

Supporting evidence

+3 tracked investors reported holding ORKA at their latest filing
+Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource

Contradicting evidence — always shown

−1 tracked investor reduced or exited last quarter (1 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 ORUKA THERAPEUTICS INC (ORKA)

ORUKA THERAPEUTICS INC (ORKA) appears in the most recent 13F filings of 3 tracked institutional investors. The largest disclosed position is held by Andreas Halvorsen (Viking Global Investors), valued at $143M. Across recent filings, tracked investors recorded 3 new positions, 0 increased, 1 reduced, and 2 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in ORKA

/100

Mixed Activity

Added / Increased3

Reduced1

Exited2

BearishBullish

Crowded Trade Score™

How many top investors track ORKA

/100

Emerging Interest

3investors

A small number of top investors own this.

UndiscoveredCrowded

151015+

ORKA Ownership Composition

How ORUKA THERAPEUTICS INC is held across tracked investor types, based on reported 13F positions.

Dominant Type

Other

56% of tracked value

Institutions

tracked investors

Total Reported

$255.9M

combined 13F value

Other55.9%
Multi-Strategy / Quant44.1%

Other(1)

55.9%

Multi-Strategy / Quant(2)

44.1%

Tracked investors currently reporting ORKA

1 tracked investor has since exited this position — listed separately below.

Investor	Firm	Shares	Market value	% of portfolio	As of
Andreas Halvorsen	Viking Global Investors	1.5M	$143.1M	0.41%	Jun 30, 2026
Ken Griffin	Citadel Advisors	1.2M	$109.7M	0.01%	Jun 30, 2026
Izzy Englander	Millennium Management	32.9K	$3.1M	0.00%	Jun 30, 2026

Andreas HalvorsenJun 30, 2026
Viking Global Investors
Shares
1.5M
Value
$143.1M
% Portfolio
0.41%
Ken GriffinJun 30, 2026
Citadel Advisors
Shares
1.2M
Value
$109.7M
% Portfolio
0.01%
Izzy EnglanderJun 30, 2026
Millennium Management
Shares
32.9K
Value
$3.1M
% Portfolio
0.00%

Previously held ORKA

These investors reported ORKA in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.

Investor	Firm	Last reported shares	Value then	Last held
Steve Cohen	Point72 Asset Management	600K	$18.2M	Dec 31, 2025

Recent activity

Investor	Action	Δ %	Current value	Filing date
Andreas Halvorsen	New	—	$51.3M	Nov 14, 2025
Andreas Halvorsen	Unchanged	0.00%	$80.8M	Feb 17, 2026
Andreas Halvorsen	Unchanged	0.00%	$130.8M	May 15, 2026
Andreas Halvorsen	Reduced	-43.62%	$143.1M	Aug 14, 2026
Steve Cohen	New	—	$11.8M	Nov 14, 2024
Steve Cohen	Sold	-100.00%	$0	Feb 14, 2025
Steve Cohen	New	—	$3.5M	Jul 21, 2025
Steve Cohen	Sold	-100.00%	$0	Aug 14, 2025

Andreas Halvorsen
New
$51.3MNov 14, 2025
Andreas Halvorsen
Unchanged
$80.8M(0.00%)Feb 17, 2026
Andreas Halvorsen
Unchanged
$130.8M(0.00%)May 15, 2026
Andreas Halvorsen
Reduced
$143.1M(-43.62%)Aug 14, 2026
Steve Cohen
New
$11.8MNov 14, 2024
Steve Cohen
Sold
$0(-100.00%)Feb 14, 2025
Steve Cohen
New
$3.5MJul 21, 2025
Steve Cohen
Sold
$0(-100.00%)Aug 14, 2025

Frequently asked questions

How many institutional investors hold ORKA?: 3 tracked institutional investors disclosed a position in ORKA (ORUKA THERAPEUTICS INC) in their most recent 13F filing.
Who is the largest institutional holder of ORKA?: Andreas Halvorsen, Viking Global Investors, holds the largest disclosed position in ORKA, valued at $143M.
Did institutional ownership of ORKA increase or decrease?: Across recent 13F filings, tracked investors recorded 3 new positions, 0 increased, 1 reduced, and 2 fully exited ORKA.
Where does this ORKA 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.