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

The 5 Biggest Deals of 2015

By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
December 30, 2015, 9:50 AM ET
Pfizer In Merger Talks With Allergan PLC
NEW YORK, NY - OCTOBER 29: The Pfizer headquarters in New York City stands in the heart of Manhattans business district on October 29, 2015 in New York City. Ireland-based Allergan confirmed October 29, that it has been approached by the U.S. drug company Pfizer and is in talks regarding a potential deal. These are just the latest two pharmaceutical companies to start early dealmaking talks. (Photo by Spencer Platt/Getty Images)Photograph by Spencer Platt — Getty Images

It was truly the year of the deal. The volume of corporate combinations globally topped $5 trillion, according to research firm Dealogic. That makes 2015 the biggest year of deals on record, topping 2007.

Dealmaking was up 37% from 2014, and it was more than double the volume of 2009. Perhaps the most interesting thing about this year’s deal boom is that nothing seemed to be able to stop it. Typically, deals tend to follow the stock market. As stocks go up, executives get more optimistic and do more deals. But even as the market faltered in the summer, and worries about the global economy erupted, the pace of corporate combinations continued; in fact, it appeared to speed up.

The record amount of deals could have to do with low interest rates. That allowed for cheap financing and tepid economic growth, sending corporate executives looking for ways to expand and back door ways to boost earnings. Below are the biggest deals of the year and their size (including debt):

1 Pfizer/Allergan - $160 billion

A pedestrian walks past Pfizer Inc. headquarters in New York, U.S., on Monday, Nov. 23, 2015.

It was the biggest and most controversial deal of the year. There aren't a lot of synergies between Pfizer and Allergan, outside of dodging Uncle Sam. Combining with Allergan (AGN)—technically, Allergan is buying Pfizer (PFE)—will save the drug giant at least $1.2 billion a year in U.S. taxes, and possibly as much as $3.3 billion, according to one tax expert's estimates. It will also likely save Pfizer $21 billion in deferred taxes it will now never have to pay. Perhaps that's why they call it a super inversion. The Pfizer deal caused Hillary Clinton and other presidential hopefuls to say they would do something to stop such tax-driven deals.

2 AB InBev/SABMiller - $117 billion

A bottle of Budweiser beer, brewed by Anheuser-Busch InBev, right, and a bottle of Peroni beer, brewed by SABMiller.

AB InBev (AHBIF) and SABMiller (SABMILLER-PLC) will still have to shed a good deal of their U.S. beer business to make the deal work. But that's okay. This deal is all about becoming the leading beer seller in emerging markets, where the real growth opportunities are. The deal will also create a mountain of debt.

3 Royal Dutch Shell/BG Group - $82 billion

The clouds are breaking over Shell, Total and others.

In April, Royal Dutch Shell (RYDAF) decided to take advantage of the drop in the values of fellow oil companies and buy BG Group. It's unclear how wise that decision was. Oil prices have continued to drop. Originally, Shell said the deal made sense even if oil prices dropped to $70 a barrel. They recently dipped to $34. The deal gets Shell into the liquified gas market, as well as the offshore oil fields of Brazil. The move has been blessed by regulators and is likely to get approved by shareholders. Now Shell just needs to make the math work. It recently said it would cut back its capital spending in 2016.

4 Charter/Time Warner Cable - $80 billion

Charter Communications's office in Newtown, Conn.

After Comcast called off its deal to buy Time Warner Cable (TWC), John Malone's Charter (CHTR) swooped in. The deal will create the second largest cable company in the U.S., with 17 million video subscribers, behind only Comcast with 22 million. The deal still needs regulatory approval, which could stretch well into 2016.

5 Dow/DuPont - $68 billion

Dow CEO Andrew Liveris

With hedge fund activists on both sides, Dow Chemical (DOW) and DuPont (DD) finally met in the middle. The two companies decided in December to hook up in a complicated deal that will combine the two companies, but then break them up shortly after into three separate companies. The companies' CEOs Dow's Andrew Liveris and DuPont's Ed Breen say the deal will save the combined firm $3 billion a year in costs, but it's hard to see how turning two companies into three will do that, other than if these two storied science giants dramatically cut back on what they spend on research. It appears they are likely to do that, leading many to criticize the deal. DuPont has already said it will cut 1,700 workers in its home state of Delaware ahead of the deal.

About the Author
By Stephen Gandel
See full bioRight Arrow Button Icon

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
  • 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 Finance

Top CD rates today, April 15, 2026: Lock in up to up to 4.20%
Personal FinanceCertificates of Deposit (CDs)
Top CD rates today, April 15, 2026: Lock in up to up to 4.20%
By Glen Luke FlanaganApril 15, 2026
3 minutes ago
Today’s top high-yield savings rates: Up to 5.00% on April 15, 2026
Personal FinanceSavings accounts
Today’s top high-yield savings rates: Up to 5.00% on April 15, 2026
By Glen Luke FlanaganApril 15, 2026
3 minutes ago
Current refi mortgage rates report for April 15, 2026
Personal FinanceReal Estate
Current refi mortgage rates report for April 15, 2026
By Glen Luke FlanaganApril 15, 2026
3 hours ago
Current ARM mortgage rates report for April 15, 2026
Personal FinanceReal Estate
Current ARM mortgage rates report for April 15, 2026
By Glen Luke FlanaganApril 15, 2026
3 hours ago
Mortgage rates today, April 15, 2026
Personal Financemortgages
Mortgage rates today, April 15, 2026
By Glen Luke FlanaganApril 15, 2026
3 hours ago
The hidden menace behind Big Tech’s AI arms race: Meta, Amazon and others are spending billions on hardware that’s worthless in 3 years
AIFinance
The hidden menace behind Big Tech’s AI arms race: Meta, Amazon and others are spending billions on hardware that’s worthless in 3 years
By Shawn TullyApril 15, 2026
3 hours ago

Most Popular

Billionaire philanthropist MacKenzie Scott has donated again—a week after gifting millions to a college, she's just given $70 million to Meals on Wheels America
Success
Billionaire philanthropist MacKenzie Scott has donated again—a week after gifting millions to a college, she's just given $70 million to Meals on Wheels America
By Fortune EditorsApril 13, 2026
2 days ago
Retirees are facing a $345,000 bill they never saw coming — and most aren't prepared
Commentary
Retirees are facing a $345,000 bill they never saw coming — and most aren't prepared
By Fortune EditorsApril 14, 2026
1 day ago
He was coding at 12 like Elon Musk and became one of Google’s youngest-ever CMOs—but now says Gen Z is better off ice skating than learning to code
Success
He was coding at 12 like Elon Musk and became one of Google’s youngest-ever CMOs—but now says Gen Z is better off ice skating than learning to code
By Fortune EditorsApril 14, 2026
1 day ago
Anthropic is facing a wave of user backlash over reports of performance issues with its Claude AI chatbot
AI
Anthropic is facing a wave of user backlash over reports of performance issues with its Claude AI chatbot
By Fortune EditorsApril 14, 2026
1 day ago
Current price of gold as of April 13, 2026
Personal Finance
Current price of gold as of April 13, 2026
By Fortune EditorsApril 13, 2026
2 days ago
Current price of oil as of April 14, 2026
Personal Finance
Current price of oil as of April 14, 2026
By Fortune EditorsApril 14, 2026
22 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.