Sunrise Communications AG (SUNN.SW) stock analysis

In our weekly check, Sunrise Communications AG is graded C (A to F). Of 22 checks on debt, profit, cash flow and trend: 11 pass, warnings: 2, red flags: 9.

About Sunrise Communications AG

Sunrise Communications AG is a Communication Services company (Telecommunications Services) based in Switzerland, listed on SIX as SUNN.SW.

What our checks show for SUNN.SW

Red flags

• Net debt is 4.9x a year of EBITDA (debt/equity 1.52). That limits room in a downturn and raises refinancing risk.
• Operating profit does not cover the interest bill (0.3x): interest is paid from cash or new debt.
• The net margin fell by 1.7 points over 5 years, to -4%: the company keeps less of each sale as profit.
• The gross margin fell by 38.2 points, to 34.6%: costs are rising faster than prices.
• Analysts expect revenue to shrink about 0.2% a year.
• Revenue fell 0.8% a year over the last 3 years.
• Weak EPS growth
• The company is losing money: the net margin is -4%.
• Return on capital (ROCE) is only 0.9%.

Warning signs

• The stock is still below its previous peak.
• Thinly traded (about 246 thousand shares a day): buying and selling can move the price.

Strengths

• Operating cash flow is 8.36x net profit: the profit arrives as real cash.
• Analysts expect earnings per share to grow about 12.8% a year over the next years.
• Analysts expect the net margin to improve by 5.8 points from today's -4%.
• Free cash flow is 20.2% of revenue: cash for dividends, buybacks or growth.
• Its deepest fall from a peak in the available history was 23%.
• Beta 0.56: the stock usually moves less than the market.

Next earnings report: 2026-11-10

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Questions

What grade does Sunrise Communications AG (SUNN.SW) have?

In our weekly check, Sunrise Communications AG is graded C (A to F). Of 22 checks on debt, profit, cash flow and trend: 11 pass, warnings: 2, red flags: 9. The grade is a risk check, not a buy or sell recommendation.

What are the main risks of SUNN.SW stock?

This week's biggest flags for Sunrise Communications AG: High debt, Weak interest cover, Margins falling. In total 11 of 22 checks show a warning or a red flag.

What does Sunrise Communications AG do?

Sunrise Communications AG is a Communication Services company (Telecommunications Services) based in Switzerland, listed on SIX as SUNN.SW.

When does Sunrise Communications AG report earnings next?

The next earnings report is expected on 2026-11-10. We re-run the checks every week, so the grade can change after it.

The grade is a risk check, not a price forecast, and not investment advice. In our 10-year test (S&P 500, 2016-2026), stocks we graded A or B fell more than 30% 2-3 times less often than D or F, without a lower average return.

Updated 2026-10-31

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