After Twitter's (TWTR) - Get Reportbrutal quarter, it wouldn't be shocking to see an activist investor knock on founder Jack Dorsey's door.

Nor is it surprising that noted activist Bill Ackman reportedly has started to build a stake in payroll processor Automatic Data Processing (ADP) - Get Report -- shares have been a so-so performer over the past year relative to the broader market. 

TheStreet's sister publication The Deal has published a new watch list of 10 companies, based on their exhaustive research, that could be ripe for headline-making activist campaigns. We felt it would be good you see the list so you aren't behind the curve.

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