Biggest stock movers today: Pentair (PNR) +12.80% leads the S&P 500 (October 27, 2026)
Major U.S. indices finished higher on Tuesday, led by gains in the Nasdaq and Russell 2000. Pentair paced the S&P 500 gainers, while Xylem recorded the largest decline. Note that the trading session is still running, meaning intraday numbers can change by the close.
| Ticker | Company | Price ($) | Change | Week to date | Dollar volume |
|---|---|---|---|---|---|
| PNR | Pentair | 62.29 | +12.80% | +12.64% | $489M |
| FLEX | Flex | 83.35 | +8.26% | +8.88% | $944M |
| DELL | Dell Technologies | 501.96 | +7.47% | +9.97% | $3.2B |
| SMCI | Supermicro | 35.09 | +7.34% | +6.53% | $1.1B |
| BE | Bloom Energy | 218.50 | +7.15% | +13.04% | $3.4B |
| WDC | Western Digital | 380.88 | +6.95% | +10.83% | $3.4B |
| CDNS | Cadence Design Systems | 343.08 | +6.49% | +8.40% | $1.6B |
| COHR | Coherent | 235.79 | +6.45% | +12.66% | $1.5B |
| ON | ON Semiconductor | 78.67 | +6.22% | +8.89% | $680M |
| MOS | Mosaic | 18.79 | +6.10% | +5.33% | $232M |
| Ticker | Company | Price ($) | Change | Week to date | Dollar volume |
|---|---|---|---|---|---|
| XYL | Xylem | 92.86 | -14.21% | -14.60% | $949M |
| BA | Boeing | 168.18 | -10.69% | -10.71% | $7.9B |
| VLO | Valero Energy | 387.34 | -9.24% | -7.62% | $2.0B |
| MPC | Marathon Petroleum | 435.98 | -7.36% | -4.65% | $1.3B |
| PSX | Phillips 66 | 268.53 | -7.03% | -5.17% | $776M |
| ARE | Alexandria Real Estate | 40.86 | -5.85% | -5.02% | $156M |
| WELL | Welltower | 226.72 | -5.77% | -4.47% | $1.3B |
| PAYX | Paychex | 109.26 | -5.57% | -7.44% | $429M |
| HUBB | Hubbell | 434.28 | -5.47% | -3.08% | $791M |
| CSGP | CoStar | 32.01 | -5.01% | -5.63% | $212M |
| Market | Last | Change | Week to date |
|---|---|---|---|
| S&P 500 | 7,722.60 | +0.60% | +1.30% |
| Nasdaq | 26,477.81 | +1.18% | +2.01% |
| Dow Jones | 52,377.57 | +0.03% | +0.31% |
| Russell 2000 | 2,818.87 | +1.16% | +1.55% |
| VIX | 17.52 | -4.73% | - |
| 10-year yield (%) | 4.99 | +0.14% | - |
| US Dollar Index | 102.34 | +0.37% | - |
| Gold ($/oz) | 4,072.90 | +0.85% | - |
| WTI crude ($) | 100.01 | -1.72% | - |
| Bitcoin ($) | 80,577.91 | +0.71% | - |
How did major stock market indices perform today?
U.S. benchmark indices posted broad advances during Tuesday's session. The Nasdaq led the market higher with a +1.18% increase to 26,477.81, while the S&P 500 rose +0.60% to 7,722.60. The Russell 2000 gained +1.16% and the Dow Jones added +0.03%.
The S&P 500 advanced +0.60% to reach 7,722.60, expanding its week-to-date gain to +1.30%. The Nasdaq paced the session with a +1.18% move to 26,477.81, while the small-cap Russell 2000 advanced +1.16% to 2,818.87.
The Dow Jones Industrial Average lagged the broader market, inching up +0.03% to 52,377.57. Across the S&P 500, market breadth showed 238 advancing stocks, 254 declining stocks, and 11 ending flat out of 503 total constituents. As the session remains active, these figures are intraday and subject to adjustment.
Which stocks were the top gainers and losers?
Pentair led Tuesday's advancers with a +12.80% gain, followed by Flex and Dell Technologies. Conversely, Xylem saw the largest decline, tumbling -14.21%, alongside significant drops in Boeing and energy refiners such as Valero Energy.
Pentair led the advancers on Tuesday, rising +12.80% to 62.29 on $489.3M in dollar volume. Flex gained +8.26% to 83.35, Dell Technologies rose +7.47% to 501.96, and Supermicro climbed +7.34% to 35.09. Specific corporate catalysts for these advances are not detailed in our data, so readers can consult individual SEC filings and company press releases.
On the downside, Xylem fell -14.21% to 92.86 with a dollar volume of $948.9M. Boeing slid -10.69% to 168.18 with $7.88B in volume, while Valero Energy dropped -9.24% to 387.34. Marathon Petroleum and Phillips 66 also declined, falling -7.36% and -7.03% respectively.
How did commodities, yields, and macro indicators move?
Macro indicators showed a decline in volatility and mixed commodity performance. The VIX fell -4.73% to 17.52, while the 10-year Treasury yield ticked up to 4.993%. Gold advanced, whereas crude oil fell.
The Cboe Volatility Index (VIX) decreased -4.73% to 17.52, pointing to lower implied volatility across the market. The 10-year Treasury yield rose slightly by +0.14% to 4.993%, and the U.S. Dollar Index added +0.37% to reach 102.341.
In commodities and alternative assets, Gold rose +0.85% to 4,072.90 per ounce, while WTI crude fell -1.72% to 100.01 per barrel. Bitcoin climbed +0.71% during the day to trade at 80,577.91.
Frequently asked questions
What was the highest dollar volume stock among the top movers?
Boeing recorded the largest dollar volume among the session's top movers, generating approximately $7.88B while declining -10.69%.
Which sector constituents saw notable weakness today?
Refiners and energy names showed weakness, with Valero Energy falling -9.24%, Marathon Petroleum down -7.36%, and Phillips 66 declining -7.03%.
Are the session numbers final?
No, the market remains open and these figures represent intraday metrics that may change by the closing bell.
Bottom line
Tuesday's session featured solid gains in tech and small caps, offset by targeted weakness in industrial and energy shares. Because trading is ongoing, final prices and breadth figures may adjust before the close. Past performance does not guarantee future results. Live tables are updated during the session on our stock market page.