Check out Jim Cramer's latest trading recommendations on "Action Alerts Plus".(Updates from 10:52 a.m. ET with closing information.)
NEW YORK (TheStreet) -- Here's what Jim Cramer had to say on CNBC's "Squawk on the Street" Monday.
PerkinElmer (PKI - Get Report) should break up, according to Cramer. He added the stock is in a "major, major uptrend." Rating agency Cowen says to buy it. PKI ended the day 1.2% higher at $41.69.
Cramer said JPMorgan has been one of the "biggest bears in the world" on Linn Energy (LINE - Get Report). However, now that LINE has bought Berry Petroleum, JPMorgan says to buy. Cramer hopes this brings some relief to the stock. LINE is a holding in Cramer's charitable portfolio, Action Alerts PLUS. LINE rose 2.6% to $31.83.
Citigroup downgraded HollyFrontier (HFC - Get Report) to sell from neutral. Cramer said the downgrade was not based on a negative view of refiners but was more a "be careful here" kind of downgrade. HFC was 16 cents higher at $49.52.
Morgan Stanley upgraded Boston Scientific (BSX - Get Report) to buy from hold. Cramer said to prospective investors looking to buy, "You're not early, but it is a good company." BSX jumped 3.4% to end the day at $12.33.
-- Written by Bret Kenwell in Petoskey, Mich.