Shares of Netflix Inc. bounced 4.8% in premarket trading Thursday, off a 22-month closing low in the previous session, after Bill Ackman said his Pershing Square Capital Management hedge fund bought 3.1 million of the streaming video services company's shares "beginning on Friday and over the past several days." Based on Wednesday's closing price of $359.70, which was the lowest since March 27, 2020, the shares purchased would be valued at about $1.12 billion, or about 0.7% of Netflix's market capitalization of $159.33 billion.