U.S. stocks finished mixed on Friday the 18th during a quadruple-witching session, when index futures, index options, single-stock futures and single-stock options expired simultaneously, increasing trading volume and intraday volatility. The Dow Jones Industrial Average fell 95.40 points, or 0.18%, to 51,682.64, while the S&P 500 rose 12.74 points, or 0.17%, to 7,650.50 and the Nasdaq Composite gained 104.25 points, or 0.39%, to 26,522.55. The VIX, a gauge of expected stock-market volatility, fell 16.37%. The Philadelphia Semiconductor Index rose 322.20 points, or 2.78%, to 11,921.69 as memory stocks rallied. SanDisk gained 10.99%, Micron Technology rose 3.92%, Western Digital advanced 4.13% and SK Hynix ADR increased 2.46%. Among crypto-related stocks in the MSX.COM snapshot, Strategy gained 16.39%, Sharplink rose 13.20%, Coinbase advanced 11.66%, PURR climbed 9.82%, Robinhood increased 9.12%, BitMine rose 8.79% and Circle gained 7.86%. A separate MSX account highlighted declines among AI-related shares, led by Symbotic’s 6.1% drop, Accenture’s 4.73% decline, Dell’s 3.46% fall, IBM’s 3.45% loss and CrowdStrike’s 3.28% decrease. Investors also assessed elevated Treasury yields, a rebound in oil prices and the Federal Reserve’s quarter-point rate hike to a 3.75%-4.00% target range.