** Shares in Abivax ABVX.PA fall 4.7%, the biggest faller on the pan-European STOXX 600 index .STOXX, after the French biotech firm's Q3 results offered little surprise
** Q3 operating loss widens to 174.4 million euros ($204.9 million) from 130.2 million a year ago, while cash position stood at 589.7 million euros at the end of the period
** Van Laschot Kempen says the results are "uneventful", but notes the company said it has cash runway into the end of 2027
** "We expect that rumours on potential M&A will continue to drive share volatility," the brokerage adds
** Up to Monday's close, shares of Abivax gained 1,441% this year
($1 = 0.8511 euros)
(Reporting by Gianluca Lo Nostro)
((gianluca.lonostro@thomsonreuters.com;))