Nvidia is flashing a sell signal and its huge rally marks the peak of a 40-year market cycle, veteran strategist says

Getty Images; Chelsea Jia Feng/BI

• Nvidia's stock is flashing a sell signal, says strategist Bill Blain.
• Blain cites Nvidia's high valuation and its wealthy employees as reasons to bail.
• He says the run-up in the chip maker's stock marks the peak of a decadeslong market cycle.

Nvidia's stock is flashing a big "sell" sign to investors, according to the veteran strategist Bill Blain.

Blain, the founder of Wind Shift Capital and a longtime financial strategist...