An incredibly rare bullish stock market indicator just flashed for the first time since 2019

• An incredibly rare bullish stock market indicator just flashed, suggesting more upside ahead.
• The Zweig Breadth Thrust indicator flashed for the first time since 2019, according to Ryan Detrick of the Carson Group.
• "It has only happened 14 other times since 1950 and the S&P 500 was higher a year later every single time," he said.

An incredibly rare bullish stock market indicator just flashed for the first time since 2019, suggesting that the 18% rally in the S&P 500 that started in mid-October has more fuel to continue higher.