August 10 market wrap: VIX and yields rise as chip names fall

Major U.S. indexes finished Monday slightly lower

U.S. stocks ended Monday, August 10, 2026 with modest declines across the major benchmarks. The S&P 500 closed at 7,753.11, down 4.53 points, or 0.06%. The Nasdaq-100 fell 100.50 points, or 0.34%, to 29,621.80, while the Dow Jones Industrial Average lost 61 points, or 0.11%, to 53,976. Official Cboe delayed feeds supplied every close and previous close; each daily change and percentage was independently recomputed before publication.

Volatility and Treasury yields moved higher

The Cboe VIX closed at 15.46, up 0.56 point, or 3.76%, from 14.90 on August 7. The U.S. Treasury’s official daily curve put the 2-year par yield at 4.25%, six basis points above 4.19%, and the 10-year at 4.72%, seven basis points above 4.65%. The same-day rise in the VIX and benchmark yields is dated market context, not proof of one shared cause or a forecast for Tuesday’s session.

Wheel watch: Marvell and Amkor led the chip declines

Within YieldCove’s live watchlist, Marvell Technology (MRVL) closed at $208.56, down $10.16, or 4.65%, from $218.72. Amkor Technology (AMKR) closed at $52.87, down $2.40, or 4.34%, from $55.27. Cboe’s official delayed quote feed and Nasdaq’s official stock screener matched on both regular-session closes and dollar moves. This wrap does not assign a company-specific catalyst because closing-price feeds establish what traded, not why every market participant acted.

A sharp stock decline can move option moneyness, widen the gap between a covered-call strike and the shares, and change the cash obligation represented by a put strike. It can also coincide with event risk or wider option spreads that a closing stock quote cannot reveal. Option premiums are quoted per share, one standard contract normally represents 100 shares, and the complete obligation matters more than the headline move. Rebuild any delayed option quote in a broker before using a closing price as educational context.