** Shares in Ayvens AYV.PA fall 6.2%, set for worst day since April 2025
** Company reports weak fleet growth in Q4 and guiding for gross Used Car Sales (UCS) result per unit below consensus overshadowing pre-tax profit beat
** The Europe-focused full-service leasing and fleet management provider said its total fleet decreased by 0.6% quarter-on-quarter in Q4
** Its quarterly profit before tax of 318.4 million euros ($375.58 million) was 4% below consensus, as cited by Jefferies and J.P. Morgan
** Ayvens also announced UCS per-unit guidance for 2026 of EUR 200-600 versus the consensus of EUR 692
** J.P. Morgan highlights fleet contraction and the company's lowered UCS per-unit guidance for 2026 as key headwinds
** Both Jefferies and J.P. Morgan say the market remains focused on the weak fleet growth outlook, which is unlikely to offset future declines in residual value pricing
** The stock sits among worst performers on SBF120 Index .SBF120
($1 = 0.8477 euros)
(Reporting by Clement Martinot)
((Clement.Martinot@thomsonreuters.com;))