NY Fed SOFR Index ACT/360 In-Arrears Compounding Engine: Historical Stress Testing & Tail-Risk Scenario Calibration (4.4151% 90-Day Annualized Benchmark)
NY Fed SOFR Index ACT/360 In-Arrears Compounding Engine (SOFR-INDEX-ACT360) stands at 4.4151% (90-Day Annualized) (Source: NY Fed Reference Rates, 2026-10-20), governing 2008 Lehman, 2020 Dash-for-Cash, and 2026 rate-sho
