RAPT Therapeutics, Inc.

RAPT • NASDAQ

RAPT Therapeutics, Inc. is a biotechnology company in the healthcare sector on NASDAQ, led by Brian Wong, with a market cap of $1.0B. As of Q3 2025, 100% of shares are held by 65 institutional investors, with Medicxi Ventures Management Ltd as the largest holder at 16.89%.

Chief Executive OfficerBrian Wong

Market Cap$1.0B

Biotechnology

Healthcare

Employees126.0

Websiterapt.com

Country

United States of America

Overview

Overview of institutional ownership in RAPT as of Q3 2025 with a market cap of $426.5M

All Institutions

Institutions: 65
Value Held: $428.0M
Shares Held: 16.6M
Avg Position: $6.6M
Median Position: $888.4K

Hedge Funds

Hedge Funds: 19
Value Held: $191.7M
Shares Held: 7.4M
Avg Position: $10.1M
Median Position: $4.7M

Ownership Breakdown

Institutional (non-HF)

55.39%

$236.3M

Hedge Funds

44.96%

$191.7M

Retail & Other

Based on market cap of $426.5M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in RAPT as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
M Medicxi Ventures Management Ltd Institution	-	$72.1M 9.68% of portfolio	16.89% 2.8M shares	Q4 2024 Held for 11 months	$744.4M
TCG Crossover Management, LLC Venture Capital	Chen Ming Yu Managing Partner	$42.2M 2.11% of portfolio	9.89% 1.6M shares	Q4 2024 Held for 11 months	$2.0B
Foresite Capital Management VI LLC Venture Capital	James Bruce Tananbaum CEO	$40.3M 15.57% of portfolio	9.45% 1.6M shares	Q4 2024 Held for 11 months	$258.9M
RTW INVESTMENTS, LLC Hedge Fund•Sector	Peter M Fong President	$37.9M 0.47% of portfolio	8.89% 1.5M shares	Q4 2024 Held for 11 months	$8.1B
ORBIMED ADVISORS LLC Hedge Fund•Sector	Sam Block Iii CFO	$28.0M 0.68% of portfolio	6.57% 1.1M shares	Q4 2024 Held for 11 months	$4.1B
BOONE CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short	Daniel Walter Boone President	$20.2M 6.62% of portfolio	4.73% 782.5K shares	Q3 2025 Held for 2 months	$305.0M
Deep Track Capital, LP Hedge Fund•Long/Short	David Eric Kroin CIO	$19.4M 0.55% of portfolio	4.54% 751.4K shares	Q4 2024 Held for 11 months	$3.5B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$18.0M 0.00% of portfolio	4.21% 696.2K shares	Q4 2019 Held for 5y 11m	$6.69T
N Nantahala Capital Management, LLC Hedge Fund•Multi-Strategy	Daniel J. Mack Managing Partner	$16.1M 0.99% of portfolio	3.77% 623.3K shares	Q4 2024 Held for 11 months	$1.6B
Ikarian Capital, LLC Hedge Fund•Event Driven	Neil Tristan Shahrestani CEO	$15.9M 3.21% of portfolio	3.72% 615.0K shares	Q3 2025 Held for 2 months	$494.3M

Net Capital Flow

Institutional buying and selling activity for RAPT in Q3 2025

Traded: +$84.0M
Buyers: 37
Sellers: 23
Total Bought: +$166.2M
Total Sold: −$82.2M
Avg Position: $5.9M

Biggest Buyers

Institution	Net Bought	Current Position
M Medicxi Ventures Management Ltd Institution	+$72.1M +2.8M shares	$72.1M 2.8M shares
BOONE CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short	+$20.2M +782.5K shares	$20.2M 782.5K shares
Ikarian Capital, LLC Hedge Fund•Event Driven	+$15.9M +615.0K shares	$15.9M 615.0K shares
S Siren, L.L.C. Institution	+$15.0M +580.5K shares	$15.0M 580.5K shares
Soleus Capital Management, L.P. Hedge Fund•Long/Short	+$13.9M +537.9K shares	$13.9M 537.9K shares
FMR LLC Institution	+$6.4M +246.4K shares	$6.4M 248.4K shares
BOOTHBAY FUND MANAGEMENT, LLC Fund of Funds	+$5.8M +223.9K shares	$5.8M 223.9K shares
Invesco Ltd. ETF Provider	+$3.6M +140.5K shares	$3.6M 140.5K shares
SummitTX Capital, L.P. Hedge Fund•Multi-Strategy	+$2.4M +91.9K shares	$2.4M 91.9K shares
V Velan Capital Investment Management LP Institution	+$2.1M +80.0K shares	$2.1M 80.0K shares

Biggest Sellers

Institution	Net Sold	Current Position
C Column Group LLC Institution	−$30.0M −1.2M shares	$4.3M 166.1K shares
ORBIMED ADVISORS LLC Hedge Fund•Sector	−$14.3M −555.3K shares	$28.0M 1.1M shares
B BVF INC/IL Institution	−$9.2M −1.2M shares	Sold Off 0 shares
N Nantahala Capital Management, LLC Hedge Fund•Multi-Strategy	−$8.5M −328.3K shares	$16.1M 623.3K shares
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	−$7.1M −275.4K shares	$13.1M 507.8K shares
VANGUARD GROUP INC Institution	−$4.7M −183.9K shares	$18.0M 696.2K shares
FCPM III SERVICES B.V. Real Assets	−$2.5M −95.9K shares	$8.9M 344.2K shares
R Redmile Group, LLC Hedge Fund•Sector	−$2.0M −78.1K shares	$14.3M 552.6K shares
ACADIAN ASSET MANAGEMENT LLC Long Only Manager	−$1.9M −74.3K shares	$433.0K 16.8K shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	−$726.3K −28.2K shares	$884.9K 34.3K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited RAPT in Q3 2025

New Positions: 9
New Value: $39.2M
Exited Positions: 7
Exited Value: $9.5M

New Positions

Institution	Position Value
BOONE CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short	$20.2M 782.5K shares
S Siren, L.L.C. Institution	$15.0M 580.5K shares
SummitTX Capital, L.P. Hedge Fund•Multi-Strategy	$2.4M 91.9K shares
AMERIPRISE FINANCIAL INC Institution	$1.3M 51.4K shares
HighTower Advisors, LLC RIA/Wealth	$325.6K 12.6K shares
B Banque Cantonale Vaudoise Institution	$4.0K 154.0 shares
B BRYN MAWR TRUST CO/PA Institution	$1.5K 59.0 shares
SRS Capital Advisors, Inc. RIA/Wealth	$25.0 1.0 shares
B BESSEMER GROUP INC Institution	- 11.0 shares

Exited Positions

Institution	Previous Position
B BVF INC/IL Institution	$9.2M 1.2M shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	$189.4K 23.7K shares
T Tower Research Capital LLC Institution	$15.3K 1.9K shares
WELLS FARGO & COMPANY/MN Institution	$9.8K 1.2K shares
FEDERATED INVESTORS INC /PA/ Long Only Manager	$1.1K 136.0 shares
S SIMPLEX TRADING, LLC Institution	$1.0K 197.0 shares
A AMALGAMATED BANK Institution	- 1.0 shares

Options Activity

Institutions with the largest Call and Put options positions in RAPT as of Q3 2025

Call Positions: 4
Call Value: $6.4M
Put Positions: 1
Put Value: $214.1K

Call Positions

Institution	Position Value
Ikarian Capital, LLC Hedge Fund•Event Driven	$4.5M 1.8K contracts
BOOTHBAY FUND MANAGEMENT, LLC Fund of Funds	$1.6M 637.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$268.8K 104.2 contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	- - contracts

Put Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$214.1K 83.0 contracts

Most Committed Institutions

Institutions with RAPT as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Foresite Capital Management VI LLC Venture Capital	James Bruce Tananbaum CEO	15.57% $40.3M	9.45% 1.6M shares	Q4 2024 Held for 11 months	$258.9M
M Medicxi Ventures Management Ltd Institution	-	9.68% $72.1M	16.89% 2.8M shares	Q4 2024 Held for 11 months	$744.4M
BOONE CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short	Daniel Walter Boone President	6.62% $20.2M	4.73% 782.5K shares	Q3 2025 Held for 2 months	$305.0M
C Column Group LLC Institution	-	5.29% $4.3M	1.00% 166.1K shares	Q4 2020 Held for 4y 11m	$81.0M
Ikarian Capital, LLC Hedge Fund•Event Driven	Neil Tristan Shahrestani CEO	3.21% $15.9M	3.72% 615.0K shares	Q3 2025 Held for 2 months	$494.3M
TCG Crossover Management, LLC Venture Capital	Chen Ming Yu Managing Partner	2.11% $42.2M	9.89% 1.6M shares	Q4 2024 Held for 11 months	$2.0B
V Velan Capital Investment Management LP Institution	-	1.94% $2.1M	0.48% 80.0K shares	Q3 2025 Held for 2 months	$106.5M
FCPM III SERVICES B.V. Real Assets	Andrew David Lindner Managing Partner	1.77% $8.9M	2.08% 344.2K shares	Q2 2025 Held for 5 months	$500.4M
R Redmile Group, LLC Hedge Fund•Sector	Amrit Nmn Nagpal Managing Partner	1.39% $14.3M	3.34% 552.6K shares	Q1 2022 Held for 3y 8m	$1.0B
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	Daniel Pawel Schneeberger Managing Partner	1.32% $13.1M	3.07% 507.8K shares	Q4 2023 Held for 1y 11m	$993.7M