S&P 500 all time high by December 31?

Why

Probability rose sharply up to 100¢ (toward YES) over the last 24 hours, a 16.4pp shift. Resolution depends on the s&p 500's highest intraday high during the specified timeframe — directional traders may be reading new information from that source.

What to verify

• Cross-check the resolution source: the S&P 500's highest intraday high during the specified timeframe — https://finance.yahoo.com/quote/%5EGSPC/history/).
• Read recent large-trade flow on Orrery's market page — $5k+ trades show up alongside the move so you can tell if size is following the price or fading it.