Text size Nvidia stock finally lost steam in September after soaring for much of the year on hope that wide adoption of artificial intelligence will boost demand for the company’s semiconductors. The price peaked on the last day of August at $493.55, up 238% from the start of the year. Since then, the shares (ticker: NVDA) have tumbled to as low as $410, before bouncing back to $430.89 as of Thursday’s close. That is nearly 13% below the high-water mark Nvidia isn’t the only chip stock that had a bad September. The iShares Semiconductor ETF ( SOXX ), which owns…