Super Micro Computer Inc. plunged 8.2 pct and the broader AI chip universe extended a multi-week retreat on Thursday, as a Bloomberg report that Alphabet was behind schedule on Gemini 3.5 Pro deepened investor anxiety about the pace of AI model delivery. Taiwan Semiconductor Manufacturing Co. reported strong second-quarter results and raised its full-year outlook, but the news backfired as it underscored the scale of capital expenditure commitments. The PHLX Semiconductor index fell 4.5 pct, the Nasdaq Composite dropped 1.5 pct and the S&P 500 closed down 0.5 pct at 7,533.77.
Today's biggest movers
| Ticker | Close | Day | 1mo | YTD |
|---|---|---|---|---|
| $CRM | $172.68 | +3.40 pct | +6.78 pct | -31.91 pct |
| $MSFT | $401.10 | +1.38 pct | +1.85 pct | -15.19 pct |
| $BIDU | $112.82 | +1.20 pct | +0.09 pct | -24.94 pct |
| $PLTR | $134.44 | +0.51 pct | +0.89 pct | -19.91 pct |
| $PANW | $353.99 | -0.01 pct | +26.47 pct | +97.35 pct |
| $SMCI | $24.68 | -8.22 pct | -15.54 pct | -20.28 pct |
| $ORCL | $124.21 | -6.25 pct | -34.05 pct | -36.53 pct |
| $INTC | $96.98 | -5.84 pct | -17.15 pct | +146.27 pct |
| $ARM | $262.01 | -5.41 pct | -33.89 pct | +128.37 pct |
| $AMD | $500.94 | -5.33 pct | -1.25 pct | +124.16 pct |
Super Micro tumbles 8.2 pct as patent risk and competition weigh
Super Micro Computer Inc. (NASDAQ: SMCI) was the session's largest decliner, falling 8.2 pct to $24.68 in heavy volume. The server and storage specialist has been contending with a pair of headwinds that have kept buyers at bay: ongoing patent infringement investigations and intensifying competition from Dell Technologies and Hewlett Packard Enterprise in the AI server market. SMCI's intraday range ran from $24.66 to $26.72, a swing equivalent to more than 8.3 pct of closing price and among the widest of any name in the AI universe on Thursday. The stock is now down 20.3 pct year to date and 15.5 pct over the past month, having surrendered most of its early 2026 rally. Next earnings are due August 11, and investors will be looking for management commentary on backlog trends and margin recovery.