storage company Netezza for $1.7 billion, sending Netezza shares up 15 percent. Nu Horizons Electronics shares more than doubled on news that Arrow Electronics will buy the company. The Dow Jones industrial average rose 145.77, or 1.4 percent, to 10,753.62. The broader Standard & Poor's 500 index rose 17.12, or 1.5 percent, to 1,142.71. The technology-heavy Nasdaq composite index rose 40.22, or 1.7 percent, to 2,355.83.