Shares of Robinhood Markets, Inc. (HOOD) gained 4% in the after-market trading following the company’s announcement of a share buyback plan. HOOD announced that its board of directors approved a share repurchase program authorizing it to repurchase up to $1 billion of its outstanding common stock.While the plan does not have an expiration date, the company expects to buy back shares over two to three years, starting from third-quarter 2024.The repurchase program does not obligate HOOD to acquire any particu ...