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United States - M&A Statistics

M&A Information about the United States. IMAA offers a large collection of M&A information for the US. In this section, we provide you some information about M&A about the United States. The IMAA Insitute offers full individual and corporate members additional prepared research covering a broad range of topics. So, become a full member here.

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M&A in the United States

In the M&A US section, we collect and regularly update information on national as well as cross-border Mergers & Acquisitions from (outbound) and into the US. As a free user or paying member of our Institute, you have full access and can also download more data and documents (please see our Membership section to sign up).

Announced M&A in the United States by Numbers and Value by Years

Since 1985, more than 325’000 mergers & acquisitions transactions have been announced with a known value of almost 34’900 bil. USD. In 2017, a new record has been broken in terms of number of deals with 15’100 which is a 12.2% increase over 2016. The record of total value of deals took place in 2015 with 24’100 bil. USD. The compound annual growth rate (CAGR) for the number of deals from 1985 to 2018 was 5.86% while the value grew at 5.32%. The current trend in 2018 suggests that there will be a decrease in M&A this year (please see the chart below).

If you are interested in the historical M&A trends since 1851, we provide a chart below. Also we describe the seven M&A waves and provide a chart in a section on M&A waves in the US. We also have also compiled data for historical Mergers & Acquisitions worldwide.

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Announced Monthly M&A in the United States

In December 2017, 1,034 transactions with a value of 229.69 bil. USD have been announced. Compared with December last year, this represents a decrease of -15.3% in terms of numbers and an increase of 96.1% in value. On a month by month comparison with November 2017, the decrease in numbers was 12.86% but an increase in value by 100%.

The month with the highest frequency of deals is December with 27’28 bil. USD deals which represents 9.1% of all M&A. February is the month with the lowest frequency with 2’994 transactions which are 7.5% of the deals.

The month with the highest value of deals is October with 3’302 bil. USD of deals which represents 10% of all M&A transactions. February is the month with the lowest value with transactions worth 2’391 bil. USD which are 7.2% of all deals.

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Announced Quarterly M&A the United States

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Announced M&A the United States by Industries (2000-2018)

The industry with the largest M&A activity in terms of transaction value has been health care – representing 14.2% of all deals with a total value of 3’292 bil. USD. For the US, you find also a collection of M&A reports on the Health Services sector below. Second most important industry by value is the Energy & Power sector with 3’078 bil. USD worth of transactions. The financials industry reached the third rank with 2’807 bil. USD of deals.

The industry with the largest number of transactions has been high technology – representing almost one fifth of all deals (19.9%) with a total number of over 38’350 transactions. For the United States, you find also a collection of M&A reports on the Technology Sector below. The second most active acquirers are companies from the financial sector with 22’049 deals accounting for 11.4% of transactions. Consumer products and services are the third most frequent industry in terms of consolidation with 11.3% of all deals.

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Biggest Deals in the US

RankDateAcquirorNationTargetNationValue in (bil. USD)Value in (bil. EUR)Value in (bil. GBP)Status
101.10.2000America Online IncUnited StatesTime WarnerUnited States164.746856160.713029100.688703Completed
209.02.2013Verizon Communications IncUnited StatesVerizon Wireless IncUnited States130.298324100.46000885.542492Completed
311.04.1999Pfizer IncUnited StatesWarner-Lambert CoUnited States89.1677284.93778254.129618Completed
410.22.2016AT&T IncUnited StatesTime Warner IncUnited States85.40795478.45574769.817669Pending
512.01.1998Exxon CorpUnited StatesMobil CorpUnited States78.9457968.35726547.543385Completed
603.05.2006AT&T IncUnited StatesBellSouth CorpUnited States72.67099760.17812641.32556Completed
704.06.1998Travelers Group IncUnited StatesCiticorpUnited States72.5581867.2457643.544488Completed
807.08.2001Comcast CorpUnited StatesAT&T Broadband & Internet SvcsUnited States72.0411585.09464651.056804Completed
911.17.2014Actavis PLCUnited StatesAllergan IncUnited States68.44540149.61607140.758293Completed
1001.26.2009Pfizer IncUnited StatesWyethUnited States67.28569551.87727148.782495Completed

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Announced M&A from China & Hong Kong to the United States

Between 1985 and 2018, companies from China and Hong Kong have announced more than 1849 acquisitions with a total value of 296.4 bil. USD. While in terms of numbers, companies from the United States have made more transactions in China than the other way round, when it comes to value – Chinese companies have spent 166 bil. USD more in the US than US companies in China (since 1991)(see additional information on US – China M&A below). Last year 210 deals had been announced wich is a decrease of -6.6% compared to the number reached in 2016 with 225 transactions. The value of 35.9 bil. USD in 2017 represents a decrease of more than 65%.

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Announced M&A from the United States into China and Hong Kong

Since 1991, companies from the US have announced more than 2355 acquisitions with a total value of 130.4 bil. USD.


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Cross-border M&A in and from the United States

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Announced M&A from the US to Abroad (Outbound)

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US Acquisitions Abroad by Target Nation (2000-2018)

Below you will find a map of the number and value of transactions by US companies abroad.

US M&A Abroad by Numbers

US M&A Abroad by Value (in bil. USD)

M&A by Foreign Acquirers into the US (Inbound)

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Acquisitions by Foreign Companies into the United States by Acquirer Nation (2000-2018)

Below you will find a map of the number and value of transactions from foreign companies in the United States.

Map of Foreign M&A into the US by Numbers

Map of Foreign M&A into the United States by Value



Historical M&A in the US since 1851

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M&A Waves in the United States since 1851

In the US, there have been so far seven M&A waves since the late 1890s. This phenomenon is not restricted to the United States, we have seen many developed countries start consolidating their industries quite early on as well. Please have a look at our country specific pages on M&A in Germany and the United Kingdom for example. Below you find a table of the M&A waves, their start year, year of the peak, end year and some short description.

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Unless otherwise stated source for all statistics is: Thomson Financial, Institute for Mergers, Acquisitions and Alliances (IMAA) analysis.

Historical M&A Books

The Institute for Mergers, Acquisitions and Alliances (IMAA) has one of the largest collections of books and articles on this subject. Our individual and corporate members have access to part of our library online and fulltext for download.

Also we have accounted for books and articles written about combinations and mergers in the United States, but written and published in foreign languages, such as German, French and Italian. As one example we provide free access to Frank A. Vanderlip‘s book “Amerikas Eindringen in das Europäische Wirtschaftsgebiet” (America’s Intrusion into Europe’s Economic Zone) published 1903 by Julius Springer.


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