** Payments firm Fiserv's FI.N shares slide 28.5% to $90.25
** Co lowers FY revenue forecast; expects organic revenue growth of 3.5% to 4%, compared with its prior forecast of 10%
** Expects adj. EPS between $8.50 and $8.60 for 2025, down from its earlier forecast of $10.15 to $10.30 per share
** FI posts Q3 revenue of $4.92 bln, below analyst expectations of $5.36 bln
** Reports adj. EPS of $2.04, below analyst estimates of $2.64
** Separately, co appointed Paul Todd as CFO, effective October 31 and announced a transfer of its listing to Nasdaq
** 29 of 36 brokerages rate the stock "buy" or higher, six "hold" and one "sell"; their median PT is $170 - LSEG data
** FI stock was down 38.58% YTD, as of last close
(Reporting by Tharuniyaa Lakshmi in Bengaluru)
((tharuniyaa@thomsonreuters.com))