** "Good times may not stick", Berenberg says and it cuts Arkema AKE.PA to "hold" from "buy" as some factors behind the stock's rally are likely temporary
** The specialty chemicals maker's shares are up about 17% YTD, up to Friday's session close - Berenberg flags the surge in acrylics margins due to the conflict in Iran as a boost
** The broker says the cash flow from margins should be used to de-lever or buy back stock, and shouldn't be used to continue "a dividend policy that was devised during better times"
** The broker's AI-driven earnings model suggests just 2% upside to Visible Alpha's consensus estimates for Q1 EBITDA
** Among the 18 analysts, nine rate Arkema "strong buy"/"buy", seven "hold" and two "sell"/"strong sell"
(Reporting by Olivier Cherfan)
((olivier.cherfan@thomsonreuters.com))