Lam Research Corp (NASDAQ:LRCX) stock is trading higher Tuesday after the company announced a buyback authorization and stock split. What Happened: Lam Research said its board approved a new share repurchase program of up to $10 billion of the company’s common stock. The new buyback supplements the remaining balances from any prior authorizations.  Repurchases may be conducted through public and private transactions, including the use of derivative contracts and structured share repurchase agreements. Lam Research noted ...