The Derivatives Lab - six SPX smiles, ATM vol 14.2% to 16.9%, a delta-hedged straddle at +$594 per trade, and a MASI 6M 95% put at 2.4% of notional

The Derivatives Lab

A full derivatives lab on real data: the SPX surface across six expiries (2,565 quotes, forwards from put-call parity, butterfly-constrained SVI, 0.03 vol-pt median cross-check against CBOE), BSM/binomial/Monte-Carlo pricing with convergence, an 85% variance cut from delta-gamma hedging, a 147-trade delta-hedged straddle check at VIX (+24.5% of premium, -$4,000 fifth-percentile tail), and a 6M 95% MASI put at 2.39% of notional.

EN · October 17, 2026 · Yirviel Somé
MAD Wealth Lab - three goals, one Moroccan balance sheet, 63.4% success probability, 5.11% net return, 7.48% volatility

The MAD Goal-Based Allocation Lab

A 38-year-old household with 300,000 MAD saved and 8,000 MAD a month funds a property down payment, four years of university and retirement from one portfolio. Using real BAM, BVC, gold, USD/MAD and World Bank inflation data, 10,000 monthly paths, and Moroccan tax drag from the CGI, the diversified plan succeeds 63.4% of the time. The bank deposit funds the house and the degree but only 46.5% of retirement, exhausting the portfolio around age 75. Taxes cost 16 points of success; inflation is the largest single risk.

EN · October 17, 2026 · Yirviel Somé
Portfolio Monte Carlo — fan chart of 10,000 block-bootstrapped paths for the 30/50/20 AKT/ATW/STM portfolio, mean terminal value $16,234, VaR 95% +3.2%

FIN — Portefeuille & Monte-Carlo : simuler la BVC depuis le terminal

Construire un portefeuille BVC (Akdital, Attijariwafa Bank, STMicroelectronics) en trois commandes, puis le simuler sur 10 000 trajectoires : allocation, percentiles, VaR/CVaR 95 %, drawdown et distribution terminale. Le simulateur reprend le moteur Python de FIN dans le navigateur, avec une graine rejouable.

FR · October 9, 2026 · Yirviel Somé