Files
nexus-quant-terminal/backend
Claude 23a5a975ff feat: Vanna-Volga FX volatility smile tab
Builds the implied-vol smile from the three standard FX market quotes
(ATM delta-neutral straddle, 25-delta risk reversal, 25-delta butterfly)
using Castagna & Mercurio's second-order Vanna-Volga approximation, and
reprices each portfolio leg off the smile vs the flat vol.

- backend: core/vanna_volga.py (delta->strike, DNS ATM, VV smile) and
  POST /api/smile
- frontend: new "Vol Smile" dashboard tab with quote inputs, smile
  chart, pillar table and smile-vs-flat leg repricing

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FpiqUMAyo4RL5DdQHMWbwE
2026-09-28 16:45:11 +00:00
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