BUZZ — Verbio seen up after Jefferies ups to 'buy' on attractive earnings outlook
* Jefferies upgrades biofuels maker Verbio to "buy" from "hold", citing an increasingly attractive earnings set-up, higher-than-expected biodiesel margins and rising demand from tighter German emissions rules * Shares in Verbio are seen up 5.2% in pre-market trade * Jefferies says Verbio's focus shifted to generating h