US households and nonprofits added approximately $12.8 trillion to their combined net worth between April and June 2026, reaching about $183 trillion by June 30, according to the Federal Reserve's Z.1 Financial Accounts report published September 11. Equity markets drove the increase, with equities reaching a record 48.23% of household and nonprofit financial assets, up from 44.66% in the first quarter. The measure includes stocks held directly and equity exposure through life insurers, private pension funds, government retirement funds and mutual funds. The gains were concentrated among wealthier households, with the richest 10% controlling approximately 87% of equity wealth, increasing exposure to market swings that could affect consumer spending through the wealth effect.