What day of the week will be the next =5% change in the S&P 500? (After April 9 2025)

Question

i.e. if it ended on say, tuesday at 1000.  And then at end of day weds it is 1050 or higher, or 950 or lower, then the answer is WEDNESDAY.

We take (end of prior day) => (end of day in question) as the change, so that we treat "overnight changes" as being part of the subsequent day.

Manifold Markets · Answer

Per Manifold Markets prediction market, Monday, followed by Wednesday and Friday are most likely. See the market for live updates (12 traders, as of Mar 14, 2026).

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