Best stock of the week: Pentair (PNR) +19.82%, plus the biggest losers (October 30, 2026)
Major U.S. stock indices finished lower for the week of October 26 to October 30, 2026, with the S&P 500 falling -0.57% and the Nasdaq sliding -2.00%. Market breadth remained negative across S&P 500 constituents, while the VIX rose +12.91% to 19.42 during Friday's session.
| Ticker | Company | Price ($) | Week | Last day | Avg. daily volume |
|---|---|---|---|---|---|
| PNR | Pentair | 66.26 | +19.82% | +0.64% | $364M |
| VRT | Vertiv | 232.50 | +19.65% | -5.46% | $2.4B |
| CVNA | Carvana | 68.29 | +18.13% | -0.03% | $963M |
| GEN | Gen Digital | 29.13 | +17.08% | +3.30% | $207M |
| GPN | Global Payments | 96.84 | +16.93% | +12.97% | $457M |
| NCLH | Norwegian Cruise Line | 17.57 | +16.36% | -3.57% | $526M |
| CMG | Chipotle Mexican Grill | 31.89 | +15.88% | +1.95% | $825M |
| HII | Huntington Ingalls Industries | 316.88 | +15.62% | +0.21% | $231M |
| REGN | Regeneron Pharmaceuticals | 927.89 | +15.26% | +13.33% | $932M |
| GM | General Motors | 87.40 | +15.12% | +1.96% | $818M |
| Ticker | Company | Price ($) | Week | Last day | Avg. daily volume |
|---|---|---|---|---|---|
| RDDT | 91.73 | -36.41% | -29.22% | $1.6B | |
| NOW | ServiceNow | 105.12 | -33.87% | -4.15% | $4.2B |
| FFIV | F5 | 338.34 | -25.71% | -6.91% | $780M |
| FTNT | Fortinet | 136.08 | -24.40% | -2.17% | $1.4B |
| INTC | Intel | 65.76 | -24.38% | -28.58% | $13.4B |
| TWLO | Twilio | 205.03 | -21.68% | -15.24% | $832M |
| XYL | Xylem | 92.40 | -15.03% | +1.81% | $604M |
| HPQ | HP | 28.78 | -14.45% | -9.58% | $479M |
| MRVL | Marvell Technology | 196.40 | -14.05% | -10.05% | $5.8B |
| FICO | Fair Isaac | 711.23 | -12.77% | +0.29% | $852M |
| Market | Last | Change | Week to date |
|---|---|---|---|
| S&P 500 | 7,580.07 | -1.82% | -0.57% |
| Nasdaq | 25,437.00 | -2.86% | -2.00% |
| Dow Jones | 51,770.31 | -1.09% | -0.85% |
| Russell 2000 | 2,811.84 | -1.66% | +1.29% |
| VIX | 19.42 | +12.91% | - |
| 10-year yield (%) | 4.93 | -1.20% | - |
| US Dollar Index | 101.91 | -0.12% | - |
| Gold ($/oz) | 3,889.90 | -3.51% | - |
| WTI crude ($) | 103.02 | +1.00% | - |
| Bitcoin ($) | 76,807.34 | -1.24% | - |
How did the major indices perform this week?
Major U.S. equities declined across most benchmarks for the week ending October 30, 2026. The S&P 500 dropped -0.57% to 7,580.07, the Nasdaq lost -2.00% to 25,437.00, and the Dow Jones fell -0.85% to 51,770.31, while the Russell 2000 gained +1.29% to 2,811.84.
Friday's session pressured the weekly totals, as the S&P 500 declined -1.82% and the Nasdaq dropped -2.86%. The Dow Jones fell -1.09%, while the Russell 2000 retreated -1.66% intraday.
Market breadth among S&P 500 components on Friday showed 220 advancing stocks, 272 declining stocks, and 11 remaining unchanged. Across other asset classes, gold dropped -3.51% to $3,889.90 per ounce, WTI crude added +0.01% to $103.02, and Bitcoin fell -1.24% to $76,807.34. The 10-year Treasury yield settled at 4.929%.
Which S&P 500 stocks led the weekly gainers?
Pentair led all weekly gainers with an advance of +19.82% to $66.26. Vertiv followed closely with an increase of +19.65% to $232.50, and Carvana posted a weekly gain of +18.13% to $68.29.
Additional top performers for the week included Gen Digital, which climbed +17.08% to $29.13, and Global Payments, which rose +16.93% to $96.84. Norwegian Cruise Line gained +16.36% to $17.57, while Chipotle Mexican Grill added +15.88% to close the week at $31.89.
Rounding out the top ten week-to-date gainers were Huntington Ingalls Industries (+15.62% to $316.88), Regeneron Pharmaceuticals (+15.26% to $927.89), and General Motors (+15.12% to $87.40). The specific corporate catalysts behind these individual weekly moves are not detailed in our data, and readers can review SEC filings and official press releases for additional context.
Which stocks fell the most over the week?
Reddit was the week's steepest decliner among S&P 500 constituents, plunging -36.41% to $91.73. ServiceNow recorded the second-largest decline, falling -33.87% to $105.12, followed by F5, which dropped -25.71% to $338.34.
Cybersecurity and hardware names also saw significant pressure over the five-day period. Fortinet dropped -24.40% to $136.08, Intel declined -24.38% to $65.76 on heavy turnover, and Twilio lost -21.68% to end at $205.03.
Other notable decliners included Xylem (-15.03% to $92.40), HP (-14.45% to $28.78), Marvell Technology (-14.05% to $196.40), and Fair Isaac (-12.77% to $711.23). Intel saw $13.4B in weekly dollar volume among the losers, though specific drivers for the broader retreat are not in our data set.
Frequently asked questions
What was the worst-performing S&P 500 stock this week?
Reddit was the weakest performer of the week, dropping -36.41% to reach a price of $91.73.
How did major benchmark indices finish the week?
The S&P 500 finished down -0.57%, the Nasdaq dropped -2.00%, and the Dow Jones fell -0.85%, whereas the Russell 2000 advanced +1.29%.
Where did the VIX and 10-year Treasury yield end the session?
The VIX rose +12.91% to 19.42, while the 10-year Treasury yield declined -0.012 percentage points to end at 4.929%.
Bottom line
The week ending October 30, 2026, concluded with broad-based losses across large-cap indices despite strength in the Russell 2000. Significant volatility was seen across individual equities, with weekly returns spanning from +19.82% for Pentair to -36.41% for Reddit. Investors should remember that past performance does not guarantee future results. Live tables are updated during the session on our stock market page.