S&P 500 vs Nasdaq 100: A 3x Retirement Gap and the Age-Based Golden Ratio
Same NT$6,000 monthly contribution, same 20 years: pick S&P 500 and you end at NT$4.5M, pick Nasdaq 100 and you reach NT$7M — a gap of over NT$2M. But the Nasdaq 100 dropped 83% in the 2000 dot-com bust and needed 15 years to recover, and dropped another 33% in 2022's single year. This article gives you 5底层 rules, an age-based stock-bond golden ratio, and the real criteria for picking an index — so you know how to allocate today. With NT$6,000 monthly DCA over 20 years, S&P 500's 9.8% annualized return produces about NT$4.5M while Nasdaq 100's 13–14% annualized return produces nearly NT$7M. But volatility on Nasdaq 100 runs 30–50% higher than S&P 500. The 2000 dot-com crash saw Nasdaq 100 down 83% with a 15-year recovery; S&P 500 fell 49% with a 7-year recovery. Includes 4 age bands (25–35, 35–50, 50–60, 60+) with concrete stock-bond-ETF allocations, plus a core-satellite framework to manage psychological tolerance. The biggest risk isn't picking the wrong index; it's refusing to adjust after picking wrong.