Shares of Just Dial Ltd have had a roller coaster ride this year. First, they halved from around Rs.840 at the beginning of the year to Rs.415 in mid-February. Since then, they have rallied back to around Rs.740. While the markets have been volatile this year, Just Dial’s swings are clearly out of the ordinary. Investing in its shares is clearly not a great idea for the faint-hearted.