Stifel initiated coverage on three communications software companies Wednesday: Five9 Inc FIVN 1.22%, RingCentral Inc RNG 0.51%and 8x8, Inc. EGHT 1.04%. A common theme among them is strong positioning as leading cloud-based solution providers in fast-growing markets. The Ratings Stifel analyst Matthew Van Vliet initiated coverage of Five9 with a Hold rating and $36 price target. Vliet initiated coverage of RingCentral with a Buy rating and $100 price target. 8x8 also received a Buy rating with a $25 price target. Source