Rick Rieder, the chief investment officer of BlackRock, said that markets are not in a bubble despite exhibiting some similar characteristics [1].

This perspective comes as investors weigh the sustainability of the artificial intelligence-driven rally against historical market crashes. Rieder's assessment suggests that the current surge in equity values is grounded in fundamentals rather than pure speculation.

Speaking during CNBC's "Closing Bell" program, Rieder said he addressed the overall equity market outlook and the specific performance of the tech sector [1]. While acknowledging that certain market behaviors mirror those seen in previous bubbles, he said that the current environment is different [1].

Rieder said that earnings growth and cash flow provide the necessary support for current valuations [2]. This distinction separates the present rally from the dot-com era, where many companies lacked the revenue to justify their stock prices [2].

Because of these fundamentals, Rieder suggested that investors should remain positioned in the market. "I think you gotta stay in," Rieder said [2].

The discussion highlighted a more relaxed stance toward the AI bull market compared to historical precedents. Rieder said that the ability of companies to generate actual profit from new technology creates a more stable foundation for growth [2].

I think you gotta stay in.

By distinguishing between 'bubble characteristics' and an actual bubble, Rieder is arguing that high valuations are justifiable if they are backed by real earnings. This suggests that BlackRock views the AI rally as a fundamental shift in productivity rather than a speculative mania, signaling a bullish outlook for long-term equity holders.