Shares in Rexam, the world's biggest maker of drinks cans, have performed poorly in recent weeks after negative news from some of its biggest customers unsettled investors. But its half-year results on Wednesday should offer a degree of reassurance. Profits are expected to be £146.7 million against £126 million a year ago. With underlying margins set to rise over the next few months, investors should buy at 419 1/4p. Sports retailer JJB Sports shocked the market last week with a profits warning, saying poor weather had hit demand for T-shirts and shorts. Broker Numis says it does not expect sales to recover at the core JJB chain until 2006 and investors should therefore sell at 183 1/2p.