Bulls and bears duked it out on Thursday for a third straight day, setting up a grudge match on Friday that could produce more volatility than we’ve seen so far this week. Whatever the case, I’d suggest using the chart shown (click on inset) to guide you. It implies minimum downside to 2623.13, a Hidden Pivot midpoint support that can be used to bottom-fish with a stop-loss as tight as 2622.75.  If it’s hit, take it as a sign that the futures are likely to continue lower, presumably to the 2559.75 target shown. They could conceivably trace out a set-up for a mechanical short from the green line, so be alert to this possibility in the early going.  If I’m in the chat room when it occurs, I’ll provide further guidance. _______ UPDATE (Dec 14, 12:30 p.m.): Today’s plunge brought the futures within a hair of the 2591.44 secondary pivot shown in the chart (click on inset). Tightly stopped bottom-fishing would have warranted on Friday, but not within an hour of the closing bell. If the pivot is decisively exceeded Sunday night or Monday, you can assume the downtrend is likely to continue to D=2559.75. That would be a high-odds spot to attempt bottom-fishing with a tight stop-loss, but you should do so aggressively only if you’ve made some money being short on the way down._______ UPDATE (Dec 17, 2:12 p.m.): With the 2559.75 ‘hidden’ support giving way, here’s the new picture we must consider, with a 2456.50 target. Please note that although a whopping rally from here touching 2629.00 would feel like the stock market was back on track for a decent Santa dead-cat bounce, it would actually set up an enticing ‘mechanical’ short.