Sotheby's nicks CEO from Madison Square Garden
Auction house Sotheby's appointed Madison Square Garden Co Chief Executive Tad Smith its CEO, a surprise development that could delay the plans of the owner of the New York Knicks to spin off its live entertainment business. Sotheby's said on Monday that Smith, who has led Madison Square Garden for just a year, would replace William Ruprecht on March 31. Madison Square Garden's shares fell 1.4 …