If Apple’s year had a theme, it was the year the company finally started to chip away at that colossal hoard of cash. After a little nudging by activist investor Carl Icahn, Apple boosted its share-buyback program in April to $90 billion and increased the pace of capital returns. New data from FactSet show that Apple has been the biggest buyback spender of 2014 among the S&P 500, pouring more than $56 billion into the program on a trailing 12-month basis as of the end of the third quarter.