1) Abbreviated charge card 2) Alternative to Visa or MC 3) American stock exchange 4) Blue card co 5) Card that rivals MC 6) Certain stock index 7) Choice for charging 8) Credit card co 9) Credit card company 10) Credit card option 11) Credit-card comp 12) Curb 13) Diners Club competitor 14) Diners Club rival Found on https://www.crosswordclues.com/clue/amex