Previous Acquisitions - The number of previous acquisitions (from 1985 on) of privately-held firms completed by the acquirer prior to its announcement of the acquisition.
Tobin's Q: The ratio of market-to-book value of assets. This would be MKVALT/ AT in the SDC table.
Turnover: AVG( # shares traded each month / # shares outstanding.
VC Fixed Effect: Is the target VC backed or not? Where could we find the VC data.
==Three Big Pulls==