GLOBAL MARKETS-Shares rally on U.S. tech earnings, ECB purchase plans
October 21, 2014 at 16:54 PM EDT
* Wall Street higher on Apple, Texas Instruments results * S&P 500 rises for fourth straight session * European shares surge on report ECB to buy corporate bonds * U.S. Treasury prices and euro fall (Adds close of U.S. markets) By Sam Forgione NEW YORK, Oct 21 (Reuters) - A measure of global equity markets advanced on Tuesday as technology earnings lifted U.S. shares and the prospect of European Central Bank corporate bond purchases boosted European stocks, while weighing o