I was curious so to get a very rough ballpark figure. So I went to the Wikipedia List of largest mergers and acquisitions article (https://en.wikipedia.org/wiki/List_of_largest_mergers_and_ac...)

Added up all the free market enterprise section completed deals where the purchaser was indicated as US based

Obama era:

2009: 6,

2010: 1,

2011: 4,

2012: 1,

2013: 4,

2014: 5,

2015: 7,

2016: 6

Trump term 1:

2017: 4,

2018: 8,

2019: 13,

2020: 7

Biden term:

2021: 4,

2022: 4,

2023: 7,

2024: 4

Trump term 2 so far:

2025: 11*,

2026: 9*

Obama average: 4.25 / year

Biden average: 4.75 / year

Trump term 1 average: 8 / year

*Most of the last two years are indicated as still pending, so not sure if they will go through or not.

Not exactly the most scientific data gathering or study. But it does suggest that large mergers and acquisitions have generally been made more frequently under Trump.