Anadarko Pete (APC) loses 72 cents to $47.98 and a noteworthy spread in the driller midday Monday is a Nov 50 – 55 put spread, sold at $3.08, 4000X on PHLX. It was tied to 64K shares at $48.25 and, looking at the open interest, might roll down in strikes, from 55s to 50s. Shares are down nearly 14 percent in the past two weeks and this strategist might be banking the profit of the 55s, but buying 50s in anticipation of additional downside.