Fifteen leading Wall Street investment banks have issued warnings about potential market risks by 2026, highlighting concerns for investors in top altcoins. JPMorgan predicts AI spending could surge to $500 billion, sparking fears of a bubble. Deutsche Bank and Goldman Sachs point to U.S. labor market fragility as a possible recession trigger, while Bank of America forecasts core inflation at 2.8%, which may delay interest rate cuts. The banks also note a K-shaped recovery, with low-income households facing the greatest risks. As macroeconomic conditions shift, investors in top altcoins should prepare for increased volatility.