Juniper Networks (NYSE:

) soared 5.92% to $27.55 in the pre-market trading after the company reported better-than-expected fourth-quarter results. Barclays upgrades the stock from Equalweight to Overweight and lifted the price target from $29.00 to $34.00. Fortinet (NASDAQ:

) shares jumped 3.04% to $22.01 in pre-market trading. Fortinet will replace Harris Teeter Supermarkets (NYSE:

) in the S&P MidCap 400 after the closing bell on January 28. McKesson (NYSE:

) surged 2.98% to $177.50 in the pre-market session after the company reported that it has acquired the Celesio holdings of Franz Haniel & Cie. GmbH. Morgan Stanley lifted the price target on the stock from $180.00 to $190.00. Microsoft (NASDAQ:

) shares gained 2.29% to $36.88 in the pre-market after the company reported stronger-than-expected fiscal second-quarter results.