• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock

2

‘I want to die broke’: Billionaire philanthropist Denny Sanford dies after giving away $4 billion

3

'Dr. Doom' Nouriel Roubini says we're headed for universal basic income or 'some form of socialism' as AI revolutionizes work—He calls that optimistic

1

Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock

2

‘I want to die broke’: Billionaire philanthropist Denny Sanford dies after giving away $4 billion

3

'Dr. Doom' Nouriel Roubini says we're headed for universal basic income or 'some form of socialism' as AI revolutionizes work—He calls that optimistic
FinanceBill Ackman

Another one of Bill Ackman’s top stocks is down 50%

By
Jen Wieczner
Jen Wieczner
Down Arrow Button Icon
By
Jen Wieczner
Jen Wieczner
Down Arrow Button Icon
October 29, 2015, 12:05 PM ET
Hedge fund manager Bill Ackman
Bill Ackman, CEO and founder of Pershing Square Capital Management, at the 2015 Delivering Alpha on July 15, 2015.Photograph by David A.Grogan—CNBC/NBCU/Photo Bank via Getty Images
Add Fortune on Google for similar content.

Bill Ackman’s hedge fund has taken a beating—down about 16% year to date—but not just because Valeant, its biggest bet and a top holding, has been plummeting after damaging allegations about its accounting practices and scrutiny over its drug prices.

Valeant (VRX), a pharmaceutical company whose stock had soared after its recent flurry of acquisitions, has fallen 54% over the last three months and 27% in October alone. For Ackman’s Pershing Square Capital Management, the bloodshed doesn’t end there: Platform Specialty Products (PAH), a chemical maker which counts the hedge fund as its biggest shareholder—with a more than 20% stake—has also lost more than half of its value since the end of July.

Platform’s shares hit a six-month low of $10.75 on Tuesday after the company announced its CEO’s retirement last week, following a reduction in its earnings outlook. The stock rebounded somewhat Wednesday but is still down nearly 7% this week.

Even before the two stocks’ recent selloff, Platform was a much smaller holding for Ackman at about $1.1 billion, compared with almost $4.3 billion for Valeant at the end of the second quarter. After the market declines, the hedge fund’s stakes are currently worth about $484 million and $2.3 billion, respectively.

Some of Pershing’s other stock picks have fared significantly better. Air Products & Chemicals (APD), now the fund’s biggest holding at $2.9 billion, has returned 6.6% in the last three months, while the returns of the S&P 500 have been slightly negative. Mondelez International (MDLZ), the maker of Oreo cookies and other snacks, which is also one of Ackman’s major positions, has returned more than 8% over the same period.

It’s unclear, however, whether the outperformance of those stocks will be enough for the hedge fund to make up for the steep drops in Valeant and Platform. A spokesperson for Pershing Square declined to comment.

About the Author
By Jen Wieczner
See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • TikTok icon
  • YouTube icon

Latest in Finance

holland
Arts & EntertainmentMovies
‘The audience is telling the industry something’: even IMAX is stunned by Christopher Nolan’s runaway ‘Odyssey’
By Tatiana SatauaJuly 21, 2026
53 minutes ago
Jamie Dimon says insecurity, not ego, is what destroys the careers of top CEOs
C-SuiteJamie Dimon
Jamie Dimon says insecurity, not ego, is what destroys the careers of top CEOs
By Marco Quiroz-GutierrezJuly 21, 2026
3 hours ago
Welder on a navy boat
SuccessCareers
Jamie Dimon says six-figure shipyard jobs are the new ‘American Dream’—but candidates will need to endure hours of extreme heat, cold, and rain
By Preston ForeJuly 21, 2026
5 hours ago
Knicks star Jalen Brunson
SuccessPersonal Finance
Despite a $156 million contract, Knicks star Jalen Brunson still calls his parents for financial advice any time he makes a big purchase
By Emma BurleighJuly 21, 2026
6 hours ago
Current price of gold as of July 21, 2026
Personal Financegold prices
Current price of gold as of July 21, 2026
By Danny BakstJuly 21, 2026
8 hours ago
va
North AmericaWhite House
HUD suspends disaster funding to U.S. Virgin Islands housing authority, saying mismanagement has kept $1.3 billion from hurricane survivors
By Danica Coto and The Associated PressJuly 21, 2026
8 hours ago

Most Popular

Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock
Success
Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stock
By Sasha RogelbergJuly 20, 2026
1 day ago
‘I want to die broke’: Billionaire philanthropist Denny Sanford dies after giving away $4 billion
Success
‘I want to die broke’: Billionaire philanthropist Denny Sanford dies after giving away $4 billion
By Sydney LakeJuly 20, 2026
1 day ago
'Dr. Doom' Nouriel Roubini says we're headed for universal basic income or 'some form of socialism' as AI revolutionizes work—He calls that optimistic
AI
'Dr. Doom' Nouriel Roubini says we're headed for universal basic income or 'some form of socialism' as AI revolutionizes work—He calls that optimistic
By Jason MaJuly 18, 2026
3 days ago
The Treasury is walking a tightrope on U.S. debt by relying so much on short-term rates that are at the mercy of a suddenly very hawkish Fed
Economy
The Treasury is walking a tightrope on U.S. debt by relying so much on short-term rates that are at the mercy of a suddenly very hawkish Fed
By Jason MaJuly 20, 2026
1 day ago
Current price of silver as of Monday, July 20, 2026
Personal Finance
Current price of silver as of Monday, July 20, 2026
By Joseph HostetlerJuly 20, 2026
1 day ago
Jamie Dimon won't put more of his own money into the long end of the bond market right now—thanks to the $39 trillion national debt
Economy
Jamie Dimon won't put more of his own money into the long end of the bond market right now—thanks to the $39 trillion national debt
By Eleanor PringleJuly 21, 2026
10 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.