Netflix Inc (NFLX.O) shareholders on Tuesday approved a massive increase in the number of shares the company is authorized to issue, the first step toward a possible stock split. Chief Executive Reed Hastings said at the company’s annual meeting that management will seek approval from the board of directors “in due course” to pursue a stock split, Netflix spokeswoman Anne Marie Squeo said. The company is the top performer on the Nasdaq 100 (.NDX) this year, with shares nearly doubling to close at $647.15 on Tuesday.