NEW YORK — Stocks that moved substantially or traded heavily on Monday: Eldorado Resorts Inc., down $5.45 to $45.77 The casino and resort operator is buying Caesars Entertainment for $17.3 billion in a cash-and-stock deal. Bristol-Myers Squibb Co., down $3.66 to $45.68 The pharmaceutical company said it would divest a blockbuster psoriasis treatment as part