U.S. stocks traded in a narrow range on August 14 as the three major indexes struggled for direction. The preliminary University of Michigan consumer sentiment index for August came in at 51, significantly missing the expected 55 and the prior reading of 55.2. The one-year inflation expectation ticked up to 4.3, above the forecast of 4.2, triggering modest market volatility after the release.

Storage chip stocks led the session, with Sandisk surging over 6% and pulling Micron higher in sympathy. Several biotech names saw outsized moves, with MDxHealth shares more than doubling. On the flip side, AI-themed small-cap stocks suffered heavy selling, with CXApp and Blaize both plunging over 40%. Big tech was largely muted, with Nvidia and Tesla confined to narrow ranges.

Storage Chip Sector Strengthens — Sandisk Up Over 6%

As of press time, Sandisk (SNDK) gained 6.02% to $1,620.04 on volume exceeding 14.53 million shares. Micron Technology (MU) rose 1.35% to $962.70. SK Hynix (SKHY) was actively traded with over 15.14 million shares, edging down 0.21%.

Sandisk's strong earnings persistence and its 100% cash return pledge helped lift valuation sentiment across the storage sector, with markets focusing on the profit cycle trough and shareholder returns. Nvidia's continued push on its open-source AI strategy indirectly bolstered demand expectations for high-performance memory chips. Nvidia (NVDA) edged up 0.14% to $225.61, following earlier reports that its data center sales surged 92% in Q1 fiscal 2027, with record revenue of $81.6 billion.

Biotech Stocks Post Sharp Moves — MDxHealth Doubles

As of press time, MDxHealth (MDXH) skyrocketed 109.98% to $0.97 on volume exceeding 230 million shares; Capricor Therapeutics (CAPR) surged 54.39% to $6.50; Leifras (LFS) jumped 53.24% to $3.31; and Steakholder Foods (STKH) climbed 50%. On the downside, Outlook Therapeutics (OTLK) fell over 11%.

The majority of these movers are small-cap pharma names trading at extremely low share prices, with abnormally high volume largely driven by short-term speculative flows. Fundamental catalysts remain to be confirmed.

AI Small-Cap Names Suffer Heavy Sell-Off

As of press time, CXApp (CXAI) plunged 41.35% to $0.10; Blaize (BZAI) tumbled 45.29% to $0.64; and Hyperscale Data (GPUS) dropped 13.72%. AI-themed small-cap stocks saw aggressive profit-taking following prior speculative rallies, with several names approaching penny-stock territory.

Elsewhere, SpaceX (SPCX) fell 2.75% to $137.40 on volume exceeding 54.41 million shares. The company completed its $60 billion acquisition of AI coding startup Cursor, effective August 14, aiming to integrate Cursor's coding assistant to optimize AI tool development. Tesla (TSLA) slipped a modest 0.09% to $339.64. On the macro front, the probability of a Fed rate hike in September has dropped to 25%, with expectations of rates on hold providing some support for growth stocks.