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

As deals rise, bankers warn of ‘bumpitrage’

By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
March 20, 2015, 10:18 AM ET
hand shake
HandshakePhoto by Bruno Ehrs—Getty Images

You probably don’t know what a bumpitrage is. But top investment banker Greg Weinberger, who was named last week as the co-head of global mergers at Credit Suisse, says it’s bad and it’s growing.

And it’s not just bumpitrage. There’s also concern about “appraisal arbitrage,” and of course “arbageddon,” which Weinberger says was his favorite word of 2014.

Mergers, as you have probably read, are back. After a post-financial crisis drop and a few flat years, corporate combinations in pretty much every form, every industry, and every geography are up. Last year, globally the value of all corporate mergers hit $3.5 trillion, up 47% from the year before.

One side effect of this merger wave has been the hatching of buzzwords like bumpitrage. Weinberger thinks that the good times for deal makers will continue. He gave his upbeat assessment at the Tulane Corporate Law Institute, the annual gathering of top bankers and lawyers who steer companies through mergers.

Weinberger said that a rising stock market will likely give corporate boards more confidence. He even said the dramatic rise in the number of failed transactions in 2014, up 153%, suggests that M&A activity would continue. He said it showed executives are willing to pursue risky deals, and all those failed deals will probably cause spurned executives to go out and look for other partners. In addition, the market has reacted well to deals, bidding up the shares of companies involved in them. Lastly, activist investors, who often push for deals, have more money than ever. All that should translate into more deals.

That is, as Weinberger warns, unless we get hit with a wave of bumpitrage. Bumpitrage is when activist investors or others buy shares of companies that have recently agreed to be acquired and try to push for a higher price for the deals. Weinberger says bumpitrage is leading to acquirers initially offering less for companies out of fear of having to offer more later. He says target companies are rejecting these bids, scuttling deals. That’s bad news for Weinberger and the other bankers and lawyers at the conference who make their money from M&A. He says nothing about what the fact that bumpitrage could be forcing companies to overpay for deals, which could hurt them or their shareholders down the road, which seems like the real concern.

Appraisal arbitrage is a close cousin to bumpitrage. That’s when an investor, often a hedge fund, buys shares of a company after it has agreed to be acquired but before a deal has been completed. Those investors then try to use an appraisal to say that the acquired company should get a better price. Often, the disputes end in lawsuits. More hedge funds are raising money to bring appraisal suits and some of the lawyers at the conference, presumably the ones who defend companies, thought this was unfair and that there should be new rules against these suits.

But Delaware Supreme Court Chief Justice Leo Strine said such concerns were misplaced. He said most of these suits didn’t go anywhere, and were mostly a waste of money, arguing that the rules shouldn’t be changed just because some hedge funds have found some “suckers” to invest in this.

And what’s “arbeggedon?” Well, that’s really bad, I guess. But if the mood of this week’s M&A conference is any guide, we won’t have to worry about it anytime soon.

Watch more business news from Fortune:

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
  • 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
  • Pinterest icon

Latest in Finance

donald trump
EnergyDonald Trump
Trump wants to suspend the federal gas tax. The move could mean higher debt—and more potholes
By Jake AngeloMay 11, 2026
7 minutes ago
Donald Trump pictured during a press conference following a Supreme Court ruling on his tariff policy.
EconomyTariffs
Fed researchers see a ‘full pass-through’ of Trump’s tariff costs to consumers, adding almost a full percentage point to inflation
By Tristan BoveMay 11, 2026
30 minutes ago
Santa Clara County is suing Meta over allegations it profited from scam advertisements that particularly targeted seniors and families
LawMeta
Santa Clara County is suing Meta over allegations it profited from scam advertisements that particularly targeted seniors and families
By Catherina GioinoMay 11, 2026
1 hour ago
India’s Gen Z turned Diet Coke into a status symbol. A can shortage just made it a luxury
Asiadiet coke
India’s Gen Z turned Diet Coke into a status symbol. A can shortage just made it a luxury
By Brendan Cosgrove and Morning BrewMay 11, 2026
2 hours ago
todd
LawAntitrust
Biden’s DOJ sued a data company, accusing it of helping Big Meat fix prices. Trump’s DOJ is about to settle
By Alanna Durkin Richer and The Associated PressMay 11, 2026
2 hours ago
bangla
EnergyIran
Iran War is more than inconvenient for Bangladesh as millions consider leaving urban life to move back to the village
By Julhas Alam and The Associated PressMay 11, 2026
2 hours ago

Most Popular

‘This is the way’: Elon Musk endorses Warren Buffett’s famed 5-minute plan to fix the national debt
Economy
‘This is the way’: Elon Musk endorses Warren Buffett’s famed 5-minute plan to fix the national debt
By Jacqueline MunisMay 10, 2026
1 day ago
OpenAI CEO Sam Altman says Gen Z and millennials are using ChatGPT like a 'life advisor'—but college students might be one step ahead
Tech
OpenAI CEO Sam Altman says Gen Z and millennials are using ChatGPT like a 'life advisor'—but college students might be one step ahead
By Sydney LakeMay 10, 2026
1 day ago
Red flag test: former CEO explains why he rejects job candidates who say they can start right away
Success
Red flag test: former CEO explains why he rejects job candidates who say they can start right away
By Orianna Rosa RoyleMay 9, 2026
2 days ago
'Employers are increasingly turning to degree and GPA' in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
Future of Work
'Employers are increasingly turning to degree and GPA' in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
By Jake AngeloMay 9, 2026
2 days ago
Trump thinks he's flying to Beijing with leverage. China spent 6 years making sure he doesn't have any
Commentary
Trump thinks he's flying to Beijing with leverage. China spent 6 years making sure he doesn't have any
By Steve H. HankeMay 10, 2026
1 day ago
Ted Cruz says the quiet part out loud: Trump accounts are Social Security personal accounts as GOP senator reveals 'dirty little secret'
Politics
Ted Cruz says the quiet part out loud: Trump accounts are Social Security personal accounts as GOP senator reveals 'dirty little secret'
By Jason MaMay 9, 2026
2 days 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.