SOFR peaked at 3.72% on April 15, 2026, driving Polymarket trader consensus toward near-certainty on thresholds at or below that level while pricing low odds for higher marks like 3.74% or 3.76%, as daily New York Fed data confirmed a monthly range of 3.57%-3.72% amid quarter-end repo market strains and tax payment liquidity drains that temporarily tightened Treasury collateral availability. Easing to 3.63%-3.66% by April 30 reflected ample reserves under ongoing Federal Reserve balance sheet normalization, with effective Fed funds near 4.00% amid cooling inflation. Markets await April CPI release on May 15 and the May FOMC meeting for signals on monetary policy path influencing overnight funding costs.