Stocks at midday: Supermicro (SMCI) leads S&P 500 gainers, +9.04% (October 21, 2026)
Major U.S. equity benchmarks traded higher during Wednesday midday trading, led by the Nasdaq's +0.99% advance to 26,686.85. The S&P 500 rose +0.48% to 7,749.35 with market breadth positive as 296 stocks gained. Because the trading session remains open, all quotes and figures are intraday and subject to change before the closing bell.
| Ticker | Company | Price ($) | Change | Week to date | Dollar volume |
|---|---|---|---|---|---|
| SMCI | Supermicro | 35.41 | +9.04% | +11.93% | $1.9B |
| CRL | Charles River Laboratories | 340.91 | +8.07% | +13.58% | $285M |
| ECHO | EchoStar | 93.31 | +8.01% | +9.30% | $286M |
| DDOG | Datadog | 275.86 | +7.58% | +11.63% | $409M |
| BE | Bloom Energy | 237.75 | +6.78% | +7.43% | $1.5B |
| ILMN | Illumina | 282.79 | +5.54% | +7.71% | $281M |
| UAL | United Airlines | 102.74 | +5.08% | +6.91% | $448M |
| COIN | Coinbase | 178.72 | +4.61% | +3.21% | $607M |
| CRWD | CrowdStrike | 237.68 | +4.53% | +4.53% | $915M |
| DELL | Dell Technologies | 482.41 | +4.52% | +6.80% | $2.0B |
| Ticker | Company | Price ($) | Change | Week to date | Dollar volume |
|---|---|---|---|---|---|
| T | AT&T | 21.93 | -6.38% | -6.46% | $983M |
| DXCM | Dexcom | 80.35 | -6.29% | -6.62% | $223M |
| NFLX | Netflix | 65.05 | -5.31% | -7.78% | $3.8B |
| CMG | Chipotle Mexican Grill | 28.30 | -4.57% | -5.34% | $387M |
| EXPE | Expedia | 288.16 | -4.19% | -0.27% | $153M |
| BKNG | Booking | 157.60 | -3.86% | -3.58% | $517M |
| ABT | Abbott Laboratories | 98.96 | -3.41% | -5.66% | $1.4B |
| CHTR | Charter Communications | 106.50 | -3.21% | -3.28% | $187M |
| HWM | Howmet Aerospace | 204.96 | -3.15% | -7.24% | $417M |
| LULU | Lululemon Athletica | 97.16 | -2.79% | +0.06% | $148M |
| Market | Last | Change | Week to date |
|---|---|---|---|
| S&P 500 | 7,749.35 | +0.48% | +1.17% |
| Nasdaq | 26,686.85 | +0.99% | +2.09% |
| Dow Jones | 52,659.67 | +0.31% | +1.26% |
| Russell 2000 | 2,783.59 | +0.37% | +2.29% |
| VIX | 16.60 | -4.10% | - |
| 10-year yield (%) | 5.11 | -0.12% | - |
| US Dollar Index | 101.78 | +0.05% | - |
| Gold ($/oz) | 4,149.70 | +0.17% | - |
| WTI crude ($) | 97.25 | -4.46% | - |
| Bitcoin ($) | 84,622.83 | +2.03% | - |
How are major indices and market breadth performing midday?
All four major indices are showing positive midday gains on Wednesday, with the Nasdaq leading the market. Breadth in the S&P 500 is moderately positive, showing 296 advancing constituents against 191 declining stocks, while 16 constituents remain unchanged.
The S&P 500 reached 7,749.35, gaining +0.48% on the day and +1.17% week-to-date. The Nasdaq climbed +0.99% to 26,686.85, extending its week-to-date gain to +2.09%, while the Dow Jones advanced +0.31% to 52,659.67 and the Russell 2000 moved up +0.37% to 2,783.59.
Macro indicators showed the VIX down -4.10% to 16.60, while the 10-year yield stood at 5.111%, dipping -0.12%. WTI crude fell -4.46% to $97.25, while Gold rose +0.17% to $4,149.70 and Bitcoin gained +2.03% to trade at $84,622.83. As the market is active, these figures reflect current intraday values.
Which stocks are leading the midday gainers?
Supermicro and Charles River Laboratories are leading midday advancers among S&P 500 components. Supermicro jumped +9.04% to $35.41 with $1.9B in dollar volume, followed by Charles River Laboratories rising +8.07% to $340.91.
EchoStar gained +8.01% to reach $93.31, while Datadog moved up +7.58% to $275.86 on $409.0M in dollar volume. Bloom Energy also posted solid upside, advancing +6.78% to $237.75 with $1.5B in dollar volume.
Other notable gainers include Illumina (+5.54% to $282.79), United Airlines (+5.08% to $102.74), Coinbase (+4.61% to $178.72), CrowdStrike (+4.53% to $237.68), and Dell Technologies (+4.52% to $482.41). Specific corporate drivers for these moves are not provided in our data; investors can review SEC filings and official press releases for details.
Which stocks are declining the most in midday trading?
AT&T and Dexcom lead the intraday decliners within the S&P 500 universe. AT&T declined -6.38% to $21.93 on $983.5M in dollar volume, while Dexcom shed -6.29% to trade at $80.35.
Netflix fell -5.31% to $65.05 with the session's highest individual dollar volume among movers at $3.8B. Chipotle Mexican Grill also moved lower, dropping -4.57% to $28.30 on $387.1M in volume.
Rounding out the leading decliners are Expedia (-4.19% to $288.16), Booking (-3.86% to $157.60), Abbott Laboratories (-3.41% to $98.96 on $1.4B volume), Charter Communications (-3.21% to $106.50), Howmet Aerospace (-3.15% to $204.96), and Lululemon Athletica (-2.79% to $97.16). Reasons for these declines are not contained in our data set.
Frequently asked questions
Why are Supermicro and Netflix moving sharply today?
The underlying catalysts for individual stock moves like Supermicro (+9.04%) or Netflix (-5.31%) are not included in our data. Readers may consult company press releases and SEC filings for corporate announcements.
Can these stock prices change before the end of the day?
Yes. The market is currently open, meaning all quotes, gains, and losses are intraday numbers that may fluctuate before the official session close.
What is the week-to-date performance of the S&P 500?
Since the start of the week on 2026-10-19, the S&P 500 is up +1.17%, standing at 7,749.35 as of midday Wednesday.
Bottom line
Midday trading on Wednesday shows broad market strength, with the S&P 500 up +0.48% and the Nasdaq up +0.99%. Final session outcomes will depend on afternoon trading action. Remember that past performance does not guarantee future results. Live tables are updated during the session on our stock market page.