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(Updates from 10:37 a.m. ET with closing information.) NEW YORK ( TheStreet) -- Here's what Jim Cramer had to say on CNBC's "Squawk on the Street" Thursday. Fund manager Nelson Peltz said DuPont ( DD) is one of his favorite stocks during the recent Delivering Alpha Conference. "I don't want to go against Peltz," Cramer said. DuPont is a holding in his charitable trust, Action Alerts Plus. DD was unchanged at $57.47. Another fund giant, Jim Chanos, said during the same conference he is short Caterpillar ( CAT). Cramer disagreed with Chanos on this one, noting that even during the depths of the recent recession it didn't get as bad for CAT as Chanos thought. CAT was flat at $85.72. UnitedHealth Group ( UNH) is making 52-week highs thanks to higher revenue and lower cost of goods sold. "I wish I had seen this coming," Cramer said. UNH jumped 6.5% to $70.55. Citigroup says there is a 50% chance Family Dollar ( FDO) gets bought out. Cramer reminded viewers of the successful buyout of Dollar General ( DG) by equity firm KKR, so it could happen. FDO was unchanged at $68.54. Celgene ( CELG) was forced to pull trials of Revlimid, its topselling cancer drug, but the stock hasn't fallen by as much as feared. Cramer cautioned traders to be careful on the short side because the trial "wasn't really in the