Buy Diana Shipping ( DSX), Jim Cramer said Wednesday on CNBC's Stop Trading! segment. Cramer said the stock, up 9% off Tuesday's 12% plunge, remains a buy because of enormous demand in China. Cramer also likes Under Armour ( UA), off 3% on worries of rising inventory. "Yes, I would buy it," Cramer said. Cramer also said Merrill Lynch ( MER) "was a comedy that became a farce" just ahead of yesterday's cashiering of CEO Stan O'Neal, whereas Citi ( C) -- which still employs embattled chief Chuck Prince -- remains for now a mere comedy.