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Profit by Prophet

Investment strategy lab · 30 years of real market data

Strategy

Investments

Parameters

Invest per year

$

How often

Start End

Portfolio value over time

Weekly closing prices · S&P 500 (^GSPC) and Nasdaq-100 (^NDX), Jan 1996 – Oct 2026, via Yahoo Finance. Price return only — dividends not included. For illustration and education only; not financial advice.