How stocks perform after deals of $10 billion or more

Tech giants may have the biggest cash hoards these days, but it's a little myopic to view the Microsoft-LinkedIn deal as a tech-only phenomenon. Marquee market-cap companies are pulling the trigger on major market deals all the time and their confidence can be a read on stock market sentiment. Kensho took a look at major market deals, transactions of $10 billion or greater, going all the way back to 1988, a total of 89 major corporate combinations. Here's how the U.S. stock market performs in the week after blockbuster deal announcements.