Economists at Bank of America lifted their forecast for third-quarter US GDP growth to 27% from 15% on Friday.
Business Insider reports better-than-expected trends in retail sales, the housing market, and hiring.
BoA lowered its fourth-quarter projection to 3% from 5%.
Failed stimulus negotiations are growing increasingly likely.
No new aid could be a speed bump for the American economy.
BoA made the adjustment after Senate Democrats blocked Republicans' $500 billion measure on Thursday.
The parties remain hundreds of billions of dollars apart in their respective proposals' sizes.
