BUZZ-Aggreko: stuck near 5-yr lows as results fail to excite
** Aggreko (LSE: AGK.L - news) shares down 1.8 pct following results in which company warned of a challenging 2016
** Company trims capex forecast, outlines £80m cost saving programme
** Co targeting margins of around 20 pct in the medium term, vs 21-25 pct forecast previously
** Stock has lost more than a fifth of its value this year (RM (LSE: RM.L - news) : vikram.subhedar.thomsonreuters.com@reuters.net)