** Shares of IQVIA Holdings IQV.N rise 2.7% to $156.40 premarket
** Contract research firm's Q1 adj EPS of $2.70 beats Wall Street estimates of $2.63 - LSEG
** Co's Q1 rev of $3.83 bln beats estimates of $3.77 bln
** IQV also raises 2025 revenue forecast to between $16 bln and $16.4 bln, up from its previous estimate of $15.73 bln to $16.13 bln
** Up to last close, stock down 22.5% YTD
(Reporting by Puyaan Singh)
((Puyaan.Singh@thomsonreuters.com;))