According to Evan (@StockMKTNewz), the S&P 500 ($SPY) has shown significant annual variability since 1994, with major bullish years such as 1995 (+38.1%), 1997 (+33.5%), and 2003 (+28.2%), as well as notable declines in 2000 (-9.7%), 2001 (-11.8%), and 2002 (-21.6%). This historical performance data is crucial for traders analyzing correlations between traditional equities and crypto market cycles, as periods of heightened S&P 500 volatility often coincide with increased crypto trading volumes and price swings (source: @StockMKTNewz on Twitter, June 19, 2025). Crypto traders should monitor these equity trends for cross-market signals and portfolio diversification opportunities.