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(Updates from 10:40 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. UBS downgraded Lockheed Martin ( LMT). "Good luck," was Cramer's reaction, citing the sector's incredible strength in 2013. LMT was unchanged at $121.91. Cramer said he wants to wait and see the earnings report on Foot Locker ( FL), despite Citigroup calling the stock a buy ahead of the quarter. FL was 1.9% lower to close at $34.01. UBS upgraded News Corp. ( NWSA), but Cramer said he'd rather take the opportunity to buy Disney ( DIS) after recent weakness. NWSA declined 1.8% to $15.70. Cramer suggested that investors are only buying BlackBerry ( BBRY) for the takeover speculation, which is not a good thing. BBRY fell 1.8% to $10.32 Lumber Liquidator Holdings ( LL) has been on fire this year, Cramer said, after Jefferies initiated the stock as a buy. LL was unchanged at $96.15. Halcon Resources ( HK) was downgraded by Stifel Nicolaus. Cramer said a takeover is unlikely after the company's big secondary offering. HK dropped 6.1% to $4.76. To sign up for Jim Cramer's free Booyah! newsletter, with all of his latest articles and videos, please click here. -- Written by Bret Kenwell in Petoskey, Mich. Follow @BretKenwell