As more people ask chatbots for financial advice, creating the right prompts is the key to getting useful answers.

But for Wall Street, it's been a heavy week. Both the S&P 500 and the Dow are on track for only modest gains as investors waded through a maze of mixed signals - robust retail sales, a rise in consumer inflation, and flat producer prices for June.

This metric has a 100% success rate of forecasting future stock market returns when back-tested over more than 150 years.