Google, Citigroup, AT&T among big market movers Friday

NYSE

Google Inc., up $94.36 to $543.90

First-quarter results easily surpassed analysts' predictions, as the Internet search icon cut back on hiring to lower expenses.

Citigroup Inc., up $1.77 at $25.80

The country's largest bank posted a $5.1 billion quarterly loss because of poor bets on mortgages, but investors expected much worse.

AT&T Inc., up 24 cents at $37.81

The nation's biggest telecommunications company will cut about 4,600 jobs, or 1.5 percent of its staff, with the layoffs mostly among managers.

Caterpillar Inc., up $6.06 at $84.65

Global demand for the heavy equipment maker's mining products lifted first-quarter earnings 13 percent and above expectations.