Best- and Worst-Performing Stocks

The Morningstar US Large-Cap Index fell 0.15% in July. The index tracks the performance of the top 85% of the US investable universe by market cap, and each month, we screen it for the best- and worst-performing companies. Data in this article is sourced from Morningstar Direct.

The Best-Performing Stocks of July 2026

1. Cognizant Technology Solutions CTSH
2. Accenture ACN
3. PayPal Holdings PYPL
4. Workday WDAY
5. Atlassian TEAM

The Worst-Performing Stocks of July 2026

1. Sandisk SNDK
2. Corning GLW
3. KLA KLAC
4. Marvell Technology MRVL
5. SpaceX SPCX

Metrics for the Best-Performing Stocks

Cognizant Technology Solutions CTSH

• Sector: Technology
• Industry: Information Technology Services
• Economic Moat: Narrow

Cognizant climbed 42.91% in July, but over the past year, shares are down 21.31%. Cognizant has a Morningstar Rating of 5 stars, trading at a 34% discount to its $84 per share fair value estimate.

Accenture ACN

• Sector: Technology
• Industry: Information Technology Services
• Economic Moat: Narrow

Accenture soared 34.90% in July but is down 35.80% over the past year. The company’s stock has a Morningstar Rating of 4 stars and trades at a 26% discount to its fair value estimate of $223 per share.

PayPal Holdings PYPL

• Sector: Financial Services
• Industry: Credit Services
• Economic Moat: Narrow

PayPal climbed 32.49% in July, but over the past year, shares are down 16.08%. PayPal has a Morningstar Rating of 4 stars, trading at a 28% discount to its $80 per share fair value estimate.

Workday WDAY

• Sector: Technology
• Industry: Software - Application
• Economic Moat: Narrow

Workday soared 30.98% in July, but it’s down 30.10% over the past year. The stock has a Morningstar Rating of 3 stars and trades at a 7% premium to its fair value estimate of $150 per share.

Atlassian TEAM

• Sector: Technology
• Industry: Software - Application
• Economic Moat: Narrow

Atlassian leapt 29.86% in July, but over the past year, shares are down 47.33%. Atlassian has a Morningstar Rating of 5 stars, trading at a 54% discount to its $220 per share fair value estimate.

Metrics for the Worst-Performing Stocks

Sandisk SNDK

• Sector: Technology
• Industry: Computer Hardware
• Economic Moat: None

Sandisk dove 46.57% in July, but shares still grew 2,730.45% over the past year. Shares were 48.40% below their last high on June 22, 2026. Sandisk has a Morningstar Rating of 3 stars, trading at a 21% premium to its $1,000 per share fair value estimate.

Corning GLW

• Sector: Technology
• Industry: Electronic Components
• Economic Moat: Narrow

Corning sank 45.88% in July, but shares are still up 121.03% over the past year. It was 49.13% lower than its last high on June 30, 2026. The stock has a Morningstar Rating of 3 stars and trades at an 11% discount to its fair value estimate of $155 per share.

KLA KLAC

• Sector: Technology
• Industry: Semiconductor Equipment & Materials
• Economic Moat: Wide

KLA dove 39.41% in July, but shares still grew 109.32% over the past year. Shares were 40.52% below their last high on June 30, 2026. KLA has a Morningstar Rating of 3 stars, trading near its $175 per share fair value estimate.

Marvell Technology MRVL

• Sector: Technology
• Industry: Semiconductors
• Economic Moat: Narrow

Marvell sank 37.02% in July, but shares are still up 133.87% over the past year. Shares were 43.14% lower than their last high on June 18, 2026. The stock has a Morningstar Rating of 4 stars and trades at a 20% discount to its fair value estimate of $235 per share.

SpaceX SPCX

• Sector: Industrials
• Industry: Aerospace & Defense
• Economic Moat: Narrow

SpaceX dove 36.57% in July. Shares were 51.97% below their last high on June 16, 2026. SpaceX has a Morningstar Rating of 1 star, trading at a 75% premium to its $62 per share fair value estimate. The company was listed on the Nasdaq - All Markets on June 12, 2026.

Companies not formally covered by a Morningstar analyst are statistically matched to analyst-rated companies, allowing our models to calculate a quantitative star rating.