I been shorting Index futures/hedged for past few years, and when that signal happens, long stocks get hedged by futures/hedged to secure open profits, take profit on 10% of short Long term future Indexes and rest go to better than breakeven PS. If a charting pattern happens to offer buys, reverse on stock hedges/and buy/hedge them but keep Long term Index futures shorts(different account).
Does my opinion factor into systems traded, heck no, it automated mostly, and most days have no clue what the symbols did. Life just seems so much less stressful having no opinion. If I had to guess how much longer, continued down move into next week, PE's way too high, good correction, maybe 2850-2800 area, but huge guess. And to me, my opinions are the worst.