Prestige Brands (PBH) broke out of a cup-with-handle base with gusto Monday after announcing that it is buying privately held DenTek for $225 million. The company says that it expects the acquisition to add about $23 million to EBITDA and $60 million pro forma revenue. The stock rose 3.81 to 53.01 in midday trading, hitting an all-time high. The buy point was 50.81.