Wall Street Roundup: Good phone reception. Buffett bets on Japan.

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Gold: Trading now at $1,434 an ounce, up 1.2% from Friday. Dow Jones industrial average: Trading now at 12,031.57, up 1.5% from Friday.

Good morning. Bits of promising news from around the globe, including news of an AT&T deal and improving prospects out of Japan, sent stocks up Monday morning.

Good phone reception. Bankers are buzzing about AT&T’s deal to acquire T-Mobile, but will the regulators approve?

Buffett bets on Japan. Warren Buffett cancelled a trip to Japan, but he says that as an investor he thinks Japanese stocks are undervalued and worth buying after the earthquake there.

-- Nathaniel Popper