BUZZ-Just Eat: falls on cautious outlook at capital markets day
** Just Eat (Frankfurt: A1100K - news) falls 9.6 pct in volume, with traders citing cautious guidance from the company's capital markets day
** Two traders say co guided for flat margins, did not commit to investment plans beyond FY18
** Just Eat was not immediately available for comment
** Top faller by far on FTSE 100, worst day for the stock since March