August 11 market wrap: indexes slip as Aehr jumps

Major U.S. indexes slipped by about one-third of a percent

U.S. stocks ended Tuesday, August 11, 2026 with modest, closely grouped declines. The S&P 500 closed at 7,728.20, down 24.91 points, or 0.32%. The Nasdaq-100 fell 96.32 points, or 0.33%, to 29,525.48, while the Dow Jones Industrial Average lost 184 points, or 0.34%, to 53,792. The similar percentage moves across the three benchmarks describe a broadly softer close rather than an isolated decline in one headline index.

Volatility and Treasury yields both eased

The Cboe VIX closed at 15.28, down 0.18 point, or 1.16%, from 15.46 on August 10. The U.S. Treasury’s daily par-yield curve put the 2-year yield at 4.22%, three basis points below 4.25%, and the 10-year yield at 4.70%, two basis points below 4.72%. A lower VIX and lower benchmark yields alongside weaker stocks show why each market measure needs to be read separately: one session’s direction does not identify a durable regime or tomorrow’s path.

Watchlist split: Aehr rallied as Alphabet retreated

Within YieldCove’s live watchlist, Aehr Test Systems (AEHR) closed at $117.18, up $10.98, or 10.34%, from $106.20. Alphabet (GOOGL) closed at $343.80, down $13.72, or 3.84%, from $357.52. Cboe’s delayed closing quotes and Nasdaq’s stock screener matched on both regular-session closes and dollar moves. Closing-price data establishes the size and direction of the moves; it does not, by itself, prove a company-specific cause.

The contrast matters for wheel education because a double-digit rally and a multi-percent decline can shift moneyness in opposite directions. A rally may move a covered-call strike closer to the stock price, while a decline may reduce the cushion above a cash-secured put strike. Neither close reveals the next session’s option spread, implied volatility, skew or executable premium. Option premiums are quoted per share, one standard contract normally represents 100 shares, and the complete collateral or delivery obligation matters more than the stock move alone.

For readers tracking assignment risk, the dated closing price is a reference point rather than a trade instruction. Rebuilding a delayed quote in a broker means checking the specific contract and its liquidity after the market reopens, while also considering scheduled company events. That process can change the interpretation even when the verified stock close itself does not change.