Quote from austinp:
SPX / ES 1,000 level is high-odds to fulfill... quite probable by or before the end of option expiry next week.
While it certainly could be tagged (and if it's going to happen or get anywhere close my guess it has to happen in next day or two), the open interest is immensely higher at lower strike levels. 800 is highest but completely improbable, followed by 900. There is decent OI at 1000 (talking SPX big contracts) but nothing close to 900 (as of yesterday's open interest - haven't checked for what was added yesterday).
We have been straight up for three months, and haven't really had more than one solid down day in a month. Could we hit 1000? Yes, but with a quad with coming next week and one side of the trade having seen all the action forever, the odds for some type of cleanout (on downside) - even if only for a day - seem very high to me.