GET DAILY SIGNALSCybersecurity Stocks Compared: NTSK, RBRK, and S
Key Takeaways
- All three companies operate in cybersecurity, but they occupy distinct niches: Netskope focuses on cloud and network security, Rubrik on data protection and cyber resilience, and SentinelOne on AI-driven endpoint security.
- RBRK carries the largest market capitalization and the fastest recent revenue growth, while trading at a notably higher price-to-sales (P/S) multiple.
- S offers the lowest valuation multiple of the three but recently saw sharp volatility tied to a $1.25 billion convertible notes issuance.
- NTSK is the newest of the three as a public company, making its trading history thinner and its sentiment more dependent on early execution.
- Relative performance diverged in recent weeks, with Rubrik near 52-week highs while SentinelOne pulled back after a financing announcement.
- None of the three is yet profitable on a GAAP basis, so growth durability and cash-flow trajectory are central to how each is valued.
Setting the Scene
Cybersecurity remains one of the market’s most closely watched growth themes, yet not all security stocks move in lockstep. In this comparison I look at three publicly traded names—Netskope (NTSK), Rubrik (RBRK), and SentinelOne (S)—that serve different layers of the security stack. Traders evaluating momentum and relative performance may find the contrast useful, while longer-term investors may weigh growth drivers, profitability, and valuation sensitivity. By assessing business models, recent market activity, and observable catalysts side by side, the goal is to clarify where each company stands.
Netskope (NTSK) Overview and Recent Performance
Netskope is a cloud-based security provider best known for its Security Service Edge (SSE) platform, which secures access to cloud applications and data across distributed workforces and AI tools. As a relatively recent entrant to public markets, NTSK has a shorter trading record than its peers, which can amplify price swings as investors form views on its growth trajectory. I also checked this using Tickeron’s AI Screener to see how the stock compares to others in the industry.
In recent market activity, Netskope has been framed around a mixed investment setup, with attention focused on demand for AI-related security and the pace of execution heading into the second half of its fiscal period. The stock does not pay a dividend, reflecting a growth-oriented profile that reinvests cash into expansion. Sentiment has been shaped less by a single event and more by the broader debate over whether cloud and AI security spending will sustain the elevated expectations embedded in early public-market valuations.
Rubrik (RBRK) Overview and Recent Performance
Rubrik provides cloud-based data security and cyber resilience solutions, including backup, recovery, ransomware remediation, and data security posture management. Its platform targets enterprises seeking to protect and recover critical data across cloud and hybrid environments. The company generates the bulk of its revenue from the Americas, with additional operations across EMEA and APAC.
RBRK has been among the stronger performers in the security group over recent months, with revenue growth near the high-30% range year over year and a market capitalization in the low-to-mid $20 billion range. The shares climbed to a 52-week high in recent weeks before pulling back, a pattern consistent with profit-taking after a powerful multi-month rally. Disclosures of insider selling and broader technology-sector volatility weighed on momentum, even as the company’s recurring revenue base and expanding customer relationships supported a more constructive longer-term narrative. From what I see, the technical picture remains constructive on a multi-month basis.
SentinelOne (S) Overview and Recent Performance
SentinelOne develops an AI-driven cybersecurity platform spanning endpoint, cloud, and identity protection, with rapid uptake in AI security products. The company reports solid top-line expansion, with revenue in the $1.1 billion range on a trailing basis and subscription-based recurring revenue growing above 20%.
Recent market activity for S has been defined by financing news. The company issued roughly $1.25 billion in convertible senior notes due 2031, a move that drew investor attention to its funding strategy amid elevated AI spending. The announcement coincided with a notable short-term share-price decline, even as the stock’s year-to-date return remained strongly positive. This illustrates how sensitive SentinelOne’s valuation can be to capital-structure decisions despite its debt-free core balance sheet and improving free cash flow.
Head-to-Head Comparison
The clearest contrast among the three names is their position in the security stack and their valuation sensitivity. RBRK commands the largest market value and the highest P/S multiple, reflecting investor confidence in its rapid revenue growth and sticky data-protection franchise, but that premium leaves less room for error if growth moderates. S trades at a materially lower multiple and carries a broader, AI-native platform story, yet its recent convertible note issuance shows how financing decisions can trigger sharp repricing. NTSK sits in the middle on valuation but faces the added uncertainty of a newly public profile, where limited trading history makes trend consistency harder to assess.
On profitability, none of the three is GAAP-profitable, though each generates positive operating or free cash flow to varying degrees. Rubrik and SentinelOne both report gross margins in the 70% range, underscoring the software economics shared across the group, while their differing growth rates and cost structures explain the spread in market multiples. Risk factors also diverge: Rubrik’s leveraged balance sheet adds execution risk, SentinelOne faces moderating customer-expansion momentum, and Netskope must prove it can convert AI-security demand into sustained, predictable growth.
AI-Assisted Verdict
Based on observable factors such as trend consistency, relative strength, and the durability of recurring revenue, the probabilistic view favors RBRK among the three. Its sustained uptrend, strong revenue growth, and clear leadership within its niche present the most consistent technical and fundamental profile, even after recent profit-taking. S offers an attractive valuation relative to the group but carries near-term volatility from its financing event, while NTSK remains a compelling but less-proven story given its shorter public history. These observations reflect probabilistic positioning rather than a definitive outcome, and conditions could shift quickly as each company reports earnings and updates guidance. I’m watching this closely as earnings season approaches.
Using AI Tools in Practice
One resource I turn to regularly is Tickeron’s AI Trading Bots. The platform offers hundreds of bots that trade thousands of tickers, with a curated Trending AI Robots section highlighting those best suited to current conditions. Each bot comes with its own strategy, timeframe, performance record, and statistics, allowing traders to match tools to their preferred risk profile and time horizon. The lineup updates to reflect shifting market regimes, which keeps the options relevant rather than static.
Disclaimer
The information on this webpage is provided for general informational and educational purposes only and is not intended as investment advice, a recommendation to purchase or sell any security, or an offer or solicitation related to investments. It does not consider your personal financial situation, goals, or risk profile, and all investing carries inherent risks, including the possibility of losing your entire investment. For more details, please review our full disclaimer.
Contributor
Sergey Savastiouk, Ph.D. has a degree in Applied Mathematics from Moscow University and has extensive experience as an entrepreneur, investor, manager, and mathematician. His professional expertise is in applied mathematics, mathematical modeling, system and pattern analysis, and software and hardware system integration. He has served as the CEO of several hi-tech start-up companies and nonprofit organizations, which has given him proven capabilities in business strategy for high-tech start-up companies, market assessment, company formation, team building, product development, marketing, and sales. He has published numerous articles in journals and magazines on related fields. As a retail investor, he spent 15 years developing his proprietary trading and quantitative algorithms (now Tickeron’s A.I.), which brought him significant returns in trading the stock market. His current work and goal in founding Tickeron is to bring professional, sophisticated stock market analysis capabilities to retail investors via an easy-to-use interface.
S's RSI Indicator leaves overbought zone
The 10-day RSI Oscillator for S moved out of overbought territory on October 12, 2026. This could be a sign that the stock is shifting from an upward trend to a downward trend. Traders may want to look at selling the stock or buying put options. Tickeron's A.I.dvisor looked at 23 instances where the indicator moved out of the overbought zone. In 21 of the 23 cases the stock moved lower in the days that followed. This puts the odds of a move down at 90%.
Technical Analysis (Indicators)
Bearish Trend Analysis
The Momentum Indicator moved below the 0 level on October 14, 2026. You may want to consider selling the stock, shorting the stock, or exploring put options on S as a result. In 76 of 99 cases where the Momentum Indicator fell below 0, the stock fell further within the subsequent month. The odds of a continued downward trend are 77%.
The Moving Average Convergence Divergence Histogram (MACD) for S turned negative on October 13, 2026. This could be a sign that the stock is set to turn lower in the coming weeks. Traders may want to sell the stock or buy put options. Tickeron's A.I.dvisor looked at 49 similar instances when the indicator turned negative. In 37 of the 49 cases the stock turned lower in the days that followed. This puts the odds of success at 76%.
S moved below its 50-day moving average on October 16, 2026 date and that indicates a change from an upward trend to a downward trend.
Following a 3-day decline, the stock is projected to fall further. Considering past instances where S declined for three days, the price rose further in 50 of 62 cases within the following month. The odds of a continued downward trend are 78%.
Bullish Trend Analysis
The Stochastic Oscillator demonstrated that the ticker has stayed in the oversold zone for 1 day, which means it's wise to expect a price bounce in the near future.
Following a +3.79% 3-day Advance, the price is estimated to grow further. Considering data from situations where S advanced for three days, in 225 of 295 cases, the price rose further within the following month. The odds of a continued upward trend are 76%.
S may jump back above the lower band and head toward the middle band. Traders may consider buying the stock or exploring call options.
The Aroon Indicator entered an Uptrend today. In 161 of 209 cases where S Aroon's Indicator entered an Uptrend, the price rose further within the following month. The odds of a continued Uptrend are 77%.
Fundamental Analysis (Ratings)
The Tickeron Valuation Rating of 21 (best 1 - 100 worst) indicates that the company is slightly undervalued in the industry. This rating compares market capitalization estimated by our proprietary formula with the current market capitalization. This rating is based on the following metrics, as compared to industry averages: P/B Ratio (5.185) is normal, around the industry mean (15.427). P/E Ratio (-21.157) is within average values for comparable stocks, (54.308). Projected Growth (PEG Ratio) (0.010) is also within normal values, averaging (3.648). Dividend Yield (0.000) settles around the average of (0.213) among similar stocks. P/S Ratio (7.067) is also within normal values, averaging (103.889).
The Tickeron PE Growth Rating for this company is 29 (best 1 - 100 worst), pointing to outstanding earnings growth. The PE Growth rating is based on a comparative analysis of stock PE ratio increase over the last 12 months compared against S&P 500 index constituents.
The Tickeron Price Growth Rating for this company is 40 (best 1 - 100 worst), indicating steady price growth. S’s price grows at a higher rate over the last 12 months as compared to S&P 500 index constituents.
The Tickeron SMR rating for this company is 96 (best 1 - 100 worst), indicating weak sales and an unprofitable business model. SMR (Sales, Margin, Return on Equity) rating is based on comparative analysis of weighted Sales, Income Margin and Return on Equity values compared against S&P 500 index constituents. The weighted SMR value is a proprietary formula developed by Tickeron and represents an overall profitability measure for a stock.
The Tickeron Profit vs. Risk Rating rating for this company is 100 (best 1 - 100 worst), indicating that the returns do not compensate for the risks. S’s unstable profits reported over time resulted in significant Drawdowns within these last five years. A stable profit reduces stock drawdown and volatility. The average Profit vs. Risk Rating rating for the industry is 91, placing this stock worse than average.
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General Information
a provider of wireless and wired telecommunications services
Industry ComputerCommunications
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