• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
FeaturesFastest-Growing Companies

This is the fastest growing company in the U.S.

By
Laura Lorenzetti
Laura Lorenzetti
Down Arrow Button Icon
By
Laura Lorenzetti
Laura Lorenzetti
Down Arrow Button Icon
August 19, 2015, 7:00 AM ET
Courtesy of Lannett Company

The top company on this year’s Fastest Growing Companies list rocketed up the charts from No. 29 last year — and you may not even know its name. It isn’t a sexy Silicon Valley startup or a sharing economy starlet. Quite the opposite: it’s a 73-year-old drugmaker based in Philadelphia.

Lannett Company (LCI) develops, manufactures, and distributes generic drugs for a wide range of diseases, from glaucoma to migraines to pain management. The company notched nine consecutive quarters of record net sales and a 3-year annual growth rate for earnings per share of 314% — making it the No. 1 fastest growing company.

The drugmaker is one of nine pharmaceutical companies to make Fortune’s list this year, including two in the top 10. Gilead Sciences (GILD) holds the No. 9 spot, thanks to impressive sales of its high-cost hepatitis C treatments, Harvoni and Sovaldi.

Lannett’s outstanding growth is a credit to a confluence of factors: rising health care spending, an aging population, and growing prices for generic drugs.

According to analyst Elliot Wilbur of Needham & Co., “the generics industry continues to enjoy a period of unprecedented pricing prosperity,” which he wrote in a November note to clients. “Nowhere do we see that more evident than in Lannett’s financials, which continue to benefit from major pricing leverage on key limited competition generics.”

That’s especially true for Lannett’s cardiovascular and migraine offerings, for which prices were up 150% and 124%, respectively, last year.

 

Such strong pricing pressure has raised eyebrows among regulators, and Lannett and other generic drugmakers have come under investigation by the Securities and Exchange Commission, which is exploring possible violations of the Sherman Act, an anti-monopoly statute that prohibits activities that restrict competition. The company says “it has acted in accordance with all applicable rules and regulations.”

Lannett is one of the smaller players within the generic drug market — many of its competitors are bulking up in an acquisitions race. For comparison, Lannett brought in revenues of $274 million in 2014. Two generics powerhouses, Teva Pharmaceutical Industries and Mylan, earned $20.3 billion and $7.7 billion, respectively, over the same time period. That isn’t even taking into account Teva’s recent purchase of Allergan’s generic drug unit last month for about $40.5 billion.

Lannett has been making its own moves, as well. It acquired privately-held Silarx Pharmaceuticals earlier this year and is interested in other opportunities that could expand its global reach. It also has a number of new generic drug approvals in the pipeline, including 21 Abbreviated New Drug Applications and another 43 drugs in various stages of development — all of which could help keep growth going.

Read Fortune‘s full list of the 100 Fastest Growing Companies.

About the Author
By Laura Lorenzetti
See full bioRight Arrow Button Icon

Latest in Features

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
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
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
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Features

MagazineSoftware
Wall Street is convinced AI will kill SaaS. History and economics say something else
By Jeremy KahnMarch 25, 2026
3 hours ago
MagazineSocial Media
Inside the Seattle clinic that treats tech addiction like heroin, and clients detox for up to 16 weeks
By Kristin StollerMarch 24, 2026
1 day ago
MagazineCoding
Cursor’s crossroads: The rapid rise, and very uncertain future, of a $30 billion AI startup
By Allie GarfinkleMarch 21, 2026
4 days ago
MagazineIran
For CEOs, it’s time for a wartime mindset
By Geoff ColvinMarch 20, 2026
5 days ago
This photograph taken in Le-Perreux-sur-Marne, outside Paris on February 9, 2026 shows undated pictures provided by the US Department of Justice on January 30, 2026 as part of the Jeffrey Epstein files
C-SuiteJeffrey Epstein
How Jeffrey Epstein pulled Bill Gates and Microsoft into a web of sex, money, and secrets
By Eva Roytburg and Jim EdwardsMarch 10, 2026
15 days ago
C-SuiteRetail
Target’s new CEO lays out a $6 billion plan to revive ‘Tarzhay’
By Phil WahbaMarch 6, 2026
19 days ago

Most Popular

Commentary
The Treasury just declared the U.S. insolvent. The media missed it
By Fortune EditorsMarch 23, 2026
2 days ago
Magazine
The youngest-ever female CEO of a Fortune 500 company is fighting Trump's cuts to keep Medicaid strong
By Fortune EditorsMarch 24, 2026
1 day ago
Economy
It took 200 years for national debt to hit $1 trillion. Annual interest alone now exceeds that—a 'crushing legacy we must reverse,' says budget chair
By Fortune EditorsMarch 23, 2026
2 days ago
Energy
Nobel laureate Paul Krugman calls it 'treason': $580 million in suspicious oil futures traded minutes before Trump's Iran reversal
By Fortune EditorsMarch 24, 2026
17 hours ago
Success
Palantir’s billionaire CEO says only two kinds of people will succeed in the AI era: trade workers — ‘or you’re neurodivergent’
By Fortune EditorsMarch 24, 2026
20 hours ago
Personal Finance
Current price of oil as of March 24, 2026
By Fortune EditorsMarch 24, 2026
23 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.