Nasdaq extended its record Friday with strong boosts from Amazon, Microsoft and Google.

Overall trade meanwhile was charged up by new twists in the three-way merger fight between generic pharmaceutical companies Teva, Mylan and Perrigo, and the collapse of Comcast's $45 billion merger bid for Time Warner Cable.

After finally breaking its 15-year-old record on Thursday, the Nasdaq Composite Index added another 36.02 points (0.71 percent) at 5,092.08.

The Dow Jones Industrial Average edged up 21.72 (0.12 percent) to 18,080.41, while the S&P 500 added 4.82 (0.23 percent) at 2,117.75.