Sifting through countless of stocks in the Diversified Telecommunication Services industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Cogent Communications Holdings, Inc. or TIM S.A. because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Cogent Communications Holdings, Inc. and TIM S.A. compare based on key financial metrics to determine which better meets your investment needs.

About Cogent Communications Holdings, Inc. and TIM S.A.

Cogent Communications Holdings, Inc., through its subsidiaries, provides high-speed Internet access, private network, and data center colocation space services in North America, South America, Europe, Oceania, and Africa. It offers on-net Internet access and private network services to law firms, financial services firms, and advertising and marketing firms, as well as heath care providers, educational institutions and other professional services businesses, other Internet service providers, telephone companies, cable television companies, web hosting companies, media service providers, mobile phone operators, content delivery network companies, and commercial content and application service providers. The company also provides Internet access and private network services to customers that are not located in buildings directly connected to its network; and on-net services to customers located in buildings that are physically connected to its network. In addition, it offers off-net services to corporate customers using other carriers’ circuits to provide the last mile portion of the link from the customers’ premises to the network. Further, the company operates data centers that allow its customers to collocate their equipment and access the network. It serves primarily to small and medium-sized businesses, communications service providers, and other bandwidth-intensive organizations. Cogent Communications Holdings, Inc. was founded in 1999 and is headquartered in Washington, the District of Columbia.

TIM S.A. engages in the telecommunications sector in Brazil. It offers landline switched telephone services in local, national, and international long-distance modes, as well as personal mobile and multimedia communication services. The company is based in Rio de Janeiro, Brazil. TIM S.A. is a subsidiary of TIM Brasil Serviços e Participações S.A.

Latest Diversified Telecommunication Services and Cogent Communications Holdings, Inc., TIM S.A. Stock News

As of September 2, 2026, Cogent Communications Holdings, Inc. had a $489.8 million market capitalization, compared to the Diversified Telecommunication Services median of $6.3 million. Cogent Communications Holdings, Inc.’s stock is down 54.9% in 2026, up 0.5% in the previous five trading days and down 72.32% in the past year.

Currently, Cogent Communications Holdings, Inc. does not have a price-earnings ratio. Cogent Communications Holdings, Inc.’s trailing 12-month revenue is $879.8 million with a -5.1% net profit margin. Year-over-year quarterly sales growth most recently was -4.2%. Analysts expect adjusted earnings to reach $-2.515 per share for the current fiscal year. Cogent Communications Holdings, Inc. currently has a 0.8% dividend yield.

As of September 2, 2026, TIM S.A. had a $8.8 billion market cap, putting it in the 76th percentile of all stocks. TIM S.A.’s stock is down 3.1% in 2026, up 6% in the previous five trading days and down 11.33% in the past year.

Currently, TIM S.A.’s price-earnings ratio is 52.9. TIM S.A.’s trailing 12-month revenue is $5.3 billion with a 15.8% net profit margin. Year-over-year quarterly sales growth most recently was 11.0%. Analysts expect adjusted earnings to reach $1.765 per share for the current fiscal year. TIM S.A. currently has a 0.9% dividend yield.

How We Compare Cogent Communications Holdings, Inc. and TIM S.A. Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Cogent Communications Holdings, Inc. and TIM S.A.’s stock grades to see how they measure up against one another.

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Cogent Communications Holdings, Inc. and TIM S.A.’s Quality Grades

Company	Ticker	Quality
Cogent Communications Holdings, Inc.	CCOI	C
TIM S.A.	TIMB	A

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Cogent Communications Holdings, Inc. has a Quality Score of 44, which is Average. TIM S.A. has a Quality Score of 85, which is Very Strong.

The Quality Grade Winner: TIM S.A.

As you can clearly see from the Quality Grade breakdown above, TIM S.A. has a better overall quality grade than Cogent Communications Holdings, Inc.. For investors who are looking for companies with higher quality than others in the same industry, TIM S.A. could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Cogent Communications Holdings, Inc. and TIM S.A.’s Momentum Grades

Company	Ticker	Momentum
Cogent Communications Holdings, Inc.	CCOI	F
TIM S.A.	TIMB	D

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Cogent Communications Holdings, Inc. has a Momentum Score of 7, which is Very Weak. TIM S.A. has a Momentum Score of 26, which is Weak.

The Momentum Stock Winner: No Clear Winner

Neither Cogent Communications Holdings, Inc. or TIM S.A. has a strong enough Momentum Grade to be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Cogent Communications Holdings, Inc. or TIM S.A. is the better investment when it comes to momentum.

Cogent Communications Holdings, Inc. and TIM S.A.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Cogent Communications Holdings, Inc.	CCOI	A
TIM S.A.	TIMB	F

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Cogent Communications Holdings, Inc. has a Earnings Estimate Score of 89, which is Very Positive. TIM S.A. has a Earnings Estimate Score of 19, which is Very Negative.

The Earnings Estimate Revisions Grade Winner: Cogent Communications Holdings, Inc.

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Cogent Communications Holdings, Inc. has a better Earnings Estimate Revisions Grade than TIM S.A.. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Cogent Communications Holdings, Inc. could be a good stock to invest in. However, it’s important to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Cogent Communications Holdings, Inc. and TIM S.A. Grades

In addition to Momentum, Quality and Estimate Revisions, A+ Investor also provides grades for Value and Growth.

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Cogent Communications Holdings, Inc. and TIM S.A. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Cogent Communications Holdings, Inc. or TIM S.A. Stock?

Overall, Cogent Communications Holdings, Inc. stock has a Momentum Score of 7, Estimate Revisions Score of 89 and Quality Score of 44.

TIM S.A. stock has a Momentum Score of 26, Estimate Revisions Score of 19 and Quality Score of 85.

Comparing Cogent Communications Holdings, Inc. and TIM S.A.’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.