** Shares of virtual document signing platform DocuSign DOCU.O rise 1.4% to $84.57

** Brokerage William Blair upgrades DOCU's rating to "outperform"

** William Blair is bullish on the market opportunity ahead for DOCU's Intelligent Agreement Management platform $(IAM.AU)$ and ability of new product cycle to reaccelerate growth

** Says DocuSign is starting to develop an even stickier customer base as it gains more traction with IAM - William Blair

** Usage/utilization for the DOCU's core e-signature business is improving as it increases retention and majority of COVID-era contracts have now rolled off the model - brokerage

** Five of 23 brokerages rate the stock "buy" or higher, 16 "hold" and two "sell"; their median PT is $97.30, according to data compiled by LSEG

** Stock has fallen ~8% YTD, up to Monday's close

(Reporting by Juby Babu in Mexico City)

((Juby.Babu@thomsonreuters.com;))