Shares of Amgen (NASDAQ:AMGN) are moving sharply higher in pre-market trading after the biotechnology company reported first quarter results that exceeded analyst estimates on both the top and bottom lines.

Payment services provider Bock (NYSE:SQ) is also likely to see initial strength after reporting better than expected first quarter results.

Meanwhile, shares of Cloudflare (NYSE:NET) are seeing significant pre-market weakness after the cloud services provided reported first quarter results that beat expectations but provided disappointing full-year revenue guidance.

Online travel company Expedia (NASDAQ:EXPE) may also come under pressure after reporting better than expected first quarter revenue but lowering its full-year revenue forecast.