Israel's Mellanox (MLNX), which develops chips that enable data transmission among different devices, is climbing after UBS analyst Steven Milunovich upgraded the stock to Buy from Neutral. The stock's risk/reward ratio is compelling, as the shares are unlikely to drop by a large amount, the analyst said earlier today in a note to investors. Mellanox's InfiniBand switch is moving into new markets, and should gain market share in the storage space, he wrote. Intel (INTC) is likely to enter Mellanox's market in 2014 or 2015, but that risk is already reflected in Mellanox's stock price, according to Milunovich, who raised his price target on the shares to $65 from $56. In early afternoon trading, Mellanox climbed $1.80, or 3.56%, to $52.31.