United States · Investor

Sio Capital Management

Last cheque observed Oct 2025. Silence since then is not evidence of inactivity: our sources miss unannounced rounds.

QuietInvestment firm

Health Care

Cheques on record
0%of best year0cheques in 12 months, 1 on record
Since the last cheque391days00hrs00min00sec
Median round$18MRounds led1 of 1
Pitch Sio Capital Management

Sio Capital Management highlights

  1. 01

    1 rounds on record

  2. 02

    Led 1 rounds

What they do

Type
Investment firm (from a list, unverified)
Cheque size
Not stated
Sectors
Health Care
Based in
New York, United States
Cold pitches
Not stated

The record

Every round we can evidence, newest first1 appearances

  1. 2025

    1 round

  2. Oct

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

The team

Named by the firm itself, on a filing, its Form ADV or its company registration3 named

JWJin Woo LeeChief Compliance OfficeriForm ADV
JZJudah Zvi DrillickChief Executive OfficeriForm ADV
MBMichael Bernard CastorManaging MemberiForm ADV

We also hold 13 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

What the register says

From the firm's own filings with the SEC, which it must file accurately by law

$1.3Bassets it managesOct 2026
Registeredinvestment adviserfull reporting to the SEC
Legal name
SIO Capital Management, LLC
SEC number
CRD 165989

Funds on its Form ADV

2 private funds, $710M in gross assets · filed Mar 2024

  1. Sio Partners, L.P.Hedge73 investors$432M
  2. Sio Partners Offshore, LTD.Hedge35 investors$278M

Recently backed

The latest companies Sio Capital Management put money into.

Quick answers about Sio Capital Management

What does Sio Capital Management invest in?

Sio Capital Management says it invests in Health Care.

How active is Sio Capital Management?

1 investments on record, 0 of them in the last 12 months, and it led 1. The most recent was in Oct 2025.

What has Sio Capital Management invested in recently?

Its most recent investments on record: QT Imaging (Undisclosed round, Oct 2025).

How big are Sio Capital Management's cheques?

The median round it joins is $18M.

Is Sio Capital Management investing now?

No investments in the last 12 months; the latest was in Oct 2025.

What kind of investor is Sio Capital Management?

Sio Capital Management is an investment firm based in New York, United States.

How much does Sio Capital Management manage?

About $1.3B, as regulatory assets under management (Oct 2026).

When was Sio Capital Management founded?

Sio Capital Management was founded in 2006.

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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it