Suncor shares are seeing the first down day in a week, off nearly 8%, near 19.14, and option flow is well above normal, with put buyers leading the action. June 17.5 Puts are the most active, with 3500 trading, most for $2.50, and IV lifting 3 points to 82.3%. June 15 puts also seeing ask-side volume, with 1530 on the tape trading at 1.50.