Mannkind

MNKD • NASDAQ

Mannkind is a biotechnology company in the healthcare sector on NASDAQ, led by Michael E. Castagna, with a market cap of $1.8B. As of Q3 2025, 56% of shares are held by 224 institutional investors, with BlackRock, Inc. as the largest holder at 9.36%.

Chief Executive OfficerMichael E. Castagna

Market Cap$1.8B

Biotechnology

Healthcare

Employees414.0

Websitemannkindcorp.com

Country

United States of America

Overview

Overview of institutional ownership in MNKD as of Q3 2025 with a market cap of $1.6B

All Institutions

Institutions: 224
Value Held: $926.7M
Shares Held: 172.6M
Avg Position: $4.1M
Median Position: $266.5K

Hedge Funds

Hedge Funds: 26
Value Held: $190.2M
Shares Held: 35.4M
Avg Position: $7.3M
Median Position: $3.6M

Ownership Breakdown

Institutional (non-HF)

44.7%

$736.5M

Hedge Funds

11.55%

$190.2M

Retail & Other

43.76%

$721.0M

Based on market cap of $1.6B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in MNKD as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$154.2M 0.00% of portfolio	9.36% 28.7M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$94.7M 0.00% of portfolio	5.75% 17.6M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
R Rubric Capital Management LP Hedge Fund•Long/Short	Margaret Kossakowski CFO	$61.3M 0.88% of portfolio	3.72% 11.4M shares	Q3 2025 Held for 2 months	$6.9B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$57.7M 0.00% of portfolio	3.50% 10.7M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$39.7M 0.00% of portfolio	2.41% 7.4M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
N Nitorum Capital, L.P. Hedge Fund•Long/Short	Seth Damon Rosen Managing Partner	$35.2M 6.19% of portfolio	2.14% 6.6M shares	Q2 2023 Held for 2y 5m	$569.3M
UBS Group AG Institution	Sergio P. Ermotti CEO	$27.9M 0.01% of portfolio	1.69% 5.2M shares	Q4 2014 Held for 10y 11m	$511.54B
venBio Select Advisor LLC RIA/Wealth	Behzad Aghazadeh Managing Partner	$24.0M 0.31% of portfolio	1.46% 4.5M shares	Q4 2020 Held for 4y 11m	$7.7B
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$21.6M 0.00% of portfolio	1.31% 4.0M shares	Q2 2024 Held for 1y 5m	$466.32B
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$20.7M 0.00% of portfolio	1.25% 3.9M shares	≤ Q2 2013 Held for 12y 5m+	$1.65T

Net Capital Flow

Institutional buying and selling activity for MNKD in Q3 2025

Traded: +$28.3M
Buyers: 109
Sellers: 112
Total Bought: +$168.4M
Total Sold: −$140.1M
Avg Position: $3.5M

Biggest Buyers

Institution	Net Bought	Current Position
R Rubric Capital Management LP Hedge Fund•Long/Short	+$61.3M +11.4M shares	$61.3M 11.4M shares
UBS Group AG Institution	+$16.6M +3.1M shares	$27.9M 5.2M shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$14.1M +2.6M shares	$18.6M 3.5M shares
A ADAGE CAPITAL PARTNERS GP LLC Institution	+$9.1M +1.7M shares	$9.1M 1.7M shares
Eversept Partners, LLC Hedge Fund•Long/Short	+$7.2M +1.3M shares	$11.0M 2.0M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$6.0M +1.1M shares	$7.0M 1.3M shares
MORGAN STANLEY RIA/Wealth	+$5.9M +1.1M shares	$20.7M 3.9M shares
VOLORIDGE INVESTMENT MANAGEMENT, LLC Hedge Fund•Multi-Strategy	+$5.7M +1.1M shares	$6.6M 1.2M shares
A AXIOM INTERNATIONAL INVESTORS LLC /DE Long Only Manager	+$4.8M +899.4K shares	$4.8M 899.4K shares
DELTEC ASSET MANAGEMENT LLC Hedge Fund•Distressed	+$3.9M +723.5K shares	$3.9M 723.5K shares

Biggest Sellers

Institution	Net Sold	Current Position
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$20.9M −3.9M shares	$3.1M 586.5K shares
D D. E. Shaw & Co., Inc. Institution	−$8.9M −1.7M shares	$4.6M 856.9K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	−$8.4M −1.6M shares	$9.8M 1.8M shares
Q Qube Research & Technologies Ltd Institution	−$7.9M −1.5M shares	$14.0M 2.6M shares
venBio Select Advisor LLC RIA/Wealth	−$7.4M −1.4M shares	$24.0M 4.5M shares
Parkman Healthcare Partners LLC Hedge Fund•Long/Short	−$6.7M −1.2M shares	$3.5M 656.1K shares
R ROYAL BANK OF CANADA Institution	−$4.5M −840.3K shares	$1.1M 202.4K shares
M Man Group plc Institution	−$4.3M −799.5K shares	$529.8K 98.7K shares
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	−$4.1M −1.1M shares	Sold Off 0 shares
Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy	−$3.9M −732.2K shares	$930.4K 173.3K shares

Entry and Exit Activity

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

New Positions: 21
New Value: $84.9M
Exited Positions: 42
Exited Value: $26.6M

New Positions

Institution	Position Value
R Rubric Capital Management LP Hedge Fund•Long/Short	$61.3M 11.4M shares
A ADAGE CAPITAL PARTNERS GP LLC Institution	$9.1M 1.7M shares
A AXIOM INTERNATIONAL INVESTORS LLC /DE Long Only Manager	$4.8M 899.4K shares
DELTEC ASSET MANAGEMENT LLC Hedge Fund•Distressed	$3.9M 723.5K shares
Voleon Capital Management LP Hedge Fund•Quant	$1.3M 237.2K shares
DIADEMA PARTNERS LP Hedge Fund•Long/Short	$1.1M 212.5K shares
T TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY Institution	$866.2K 161.3K shares
S Stonepine Capital Management, LLC Institution	$846.1K 157.6K shares
Jain Global LLC Hedge Fund•Multi-Strategy	$633.5K 118.0K shares
Caption Management, LLC Hedge Fund•Long/Short	$318.4K 59.3K shares

Exited Positions

Institution	Previous Position
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	$4.1M 1.1M shares
OBERWEIS ASSET MANAGEMENT INC/ Long Only Manager	$3.6M 968.4K shares
Trexquant Investment LP Hedge Fund•Quant	$2.6M 692.4K shares
FEDERATED INVESTORS INC /PA/ Long Only Manager	$2.5M 673.7K shares
ExodusPoint Capital Management, LP Hedge Fund•Multi-Strategy	$2.3M 607.2K shares
M Manatuck Hill Partners, LLC Hedge Fund•Long/Short	$1.9M 500.0K shares
J Jump Financial, LLC Institution	$1.6M 421.9K shares
FIRST TRUST ADVISORS LP ETF Provider	$1.2M 330.0K shares
Marshall Wace LLP Institution	$1.0M 275.0K shares
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant	$873.5K 233.6K shares

Options Activity

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

Call Positions: 8
Call Value: $14.8M
Put Positions: 5
Put Value: $3.7M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$5.9M 11.1K contracts
DIADEMA PARTNERS LP Hedge Fund•Long/Short	$5.6M 10.4K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$956.4K 1.8K contracts
GOLDMAN SACHS GROUP INC Institution	$805.5K 1.5K contracts
J JANE STREET GROUP, LLC Institution	$662.7K 1.2K contracts
DLD Asset Management, LP Hedge Fund•Multi-Strategy	$462.3K 860.0 contracts
Hudson Bay Capital Management LP Hedge Fund•Multi-Strategy	$402.8K 750.0 contracts
W WOLVERINE TRADING, LLC Institution	- - contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$2.2M 4.2K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$866.7K 1.6K contracts
DLD Asset Management, LP Hedge Fund•Multi-Strategy	$532.1K 990.0 contracts
J JANE STREET GROUP, LLC Institution	$57.5K 107.0 contracts
W WOLVERINE TRADING, LLC Institution	- - contracts

Most Committed Institutions

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

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
N Nitorum Capital, L.P. Hedge Fund•Long/Short	Seth Damon Rosen Managing Partner	6.19% $35.2M	2.14% 6.6M shares	Q2 2023 Held for 2y 5m	$569.3M
TSP Capital Management Group, LLC Private Equity	Aaron Michael Perrine Managing Partner	4.29% $16.0M	0.97% 3.0M shares	Q1 2024 Held for 1y 8m	$373.7M
180 WEALTH ADVISORS, LLC RIA/Wealth	Darren Norman Henke Managing Partner	1.88% $15.4M	0.94% 2.9M shares	Q4 2017 Held for 7y 11m	$819.4M
1492 Capital Management LLC Long Only Manager	Joseph Anthony Frohna Managing Partner	1.08% $2.7M	0.16% 504.2K shares	Q3 2020 Held for 5y 2m	$249.8M
R Rubric Capital Management LP Hedge Fund•Long/Short	Margaret Kossakowski CFO	0.88% $61.3M	3.72% 11.4M shares	Q3 2025 Held for 2 months	$6.9B
Eversept Partners, LLC Hedge Fund•Long/Short	Rishi Rasesh Shah President	0.84% $11.0M	0.67% 2.0M shares	Q1 2024 Held for 1y 8m	$1.3B
DIADEMA PARTNERS LP Hedge Fund•Long/Short	Timothy Beau Bassett CIO	0.80% $1.1M	0.07% 212.5K shares	Q1 2025 Held for 8 months	$143.3M
S Stonepine Capital Management, LLC Institution	-	0.69% $846.1K	0.05% 157.6K shares	Q3 2025 Held for 2 months	$123.0M
DELTEC ASSET MANAGEMENT LLC Hedge Fund•Distressed	Denise Grace Vitti Managing Partner	0.64% $3.9M	0.24% 723.5K shares	Q3 2025 Held for 2 months	$603.0M
S SCOPIA CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short	Jeremy Hendrik Mindich Founder	0.51% $3.7M	0.23% 695.0K shares	Q2 2016 Held for 9y 5m	$729.9M

Hedge Fund Spotlight

Discover hedge funds investing in MNKD

DIADEMA PARTNERS LP

Hedge Fund • Long/Short

Portfolio ManagerTimothy Beau Bassett

Portfolio Value: $143.3M
Positions: 58
Last Reported: Q3 2025

Sector Allocation

Position in Mannkind

Market Value: $1.1M
Shares Held: 212.5K
Portfolio Weight: 0.80%
Owned Since: 2025-Q1

Top Holding	Sector	Market Value	Weight
1 Regeneron Pharmaceuticals REGN	Biotechnology Healthcare	$17.0M	11.83%
2 Soleno Therapeutics SLNO	Biotechnology Healthcare	$12.0M	8.36%
3 BioMarin Pharmaceuticals BMRN	Biotechnology Healthcare	$11.5M	8.05%