June 1, 2015 10:59 AM EDT

Huge acquisitions are being made one after the other — especially in the semiconductor industry, lately. On Monday, Intel announced a $16.7 billion all-cash acquisition of Altera, the second major deal in the sector in less than a week: Just a few days ago, Avago Technologies agreed to pay $37 billion in cash and stock for Broadcom.

In the chart above, take a look back at 10 of the most important tech acquisitions in the past 15 years, from Facebook’s $22 billion acquisition of WhatsApp last year to the HP-Compaq merger back in 2001.

Contact us at editors@time.com.

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