This comparison looks at a pair of cybersecurity software providers that operate in the same broad industry yet sit at different stages of growth and profitability. QLYS (Qualys) delivers a mature, highly profitable suite of cloud-based IT security and compliance tools, while TENB (Tenable) offers a faster-growing exposure management platform that is shifting toward AI-driven features. I find these kinds of relative-performance reviews helpful when trying to understand where each name fits in the current market environment.
Qualys, Inc. (QLYS) runs a cloud-based platform focused on IT security, compliance, and vulnerability management for more than 10,000 subscription customers. The company has delivered single-digit to low-double-digit revenue growth alongside very strong profitability, with gross margins near 83% and operating margins in the low-to-mid 30% range in recent quarters. I also checked this using Tickeron’s AI Screener to see how the stock compares to others in the industry. Recent results have been supported by stronger partner-led sales, which now account for more than half of revenue, and by growing adoption of newer modules such as Enterprise TruRisk Management and patch management.
Even with consistent execution, investor sentiment has remained cautious. The stock has lagged the broader market in recent weeks, and shares fell after the latest earnings release even though management raised full-year guidance. Analysts have pointed to competitive pressure from newer AI-native security offerings and a slower pace of new customer additions. Qualys continues to operate with a debt-free balance sheet and sizable cash reserves that support ongoing share repurchases.
Tenable Holdings, Inc. (TENB) focuses on exposure management, anchored by its Nessus vulnerability assessment product and the Tenable One AI-powered platform. The company aims to unify security visibility and remediation across IT, cloud, identity, and operational technology environments. Recent quarters have shown a clear inflection, with Tenable One capturing a record share of new business and net dollar expansion accelerating for consecutive periods for the first time in several years.
Tenable’s stock has been a standout performer, rising sharply and materially outpacing the S&P 500. That strength has prompted analyst price-target increases. The company raised full-year revenue and profitability guidance, expanded its non-GAAP operating margin, and repurchased shares at scale. While revenue growth remains in the single digits and below some peers, improving platform momentum and AI-related demand have clearly lifted market sentiment.
The clearest differences appear in momentum and the balance between scale and profitability. Tenable generates larger revenue, with full-year guidance above $1 billion, and has delivered accelerating platform adoption along with a rising net dollar expansion rate. Qualys, by comparison, is smaller in revenue but posts substantially higher operating margins and strong free cash flow with no debt.
Growth drivers also vary. Tenable is emphasizing AI-driven exposure management and winning business against endpoint security vendors, while Qualys is expanding through its partner channel and moving beyond core vulnerability management into risk operations and automated remediation. Both face sector risks such as competition from larger platform vendors and evolving AI-native tools. From a sentiment perspective, Tenable has drawn stronger investor enthusiasm lately, whereas Qualys has seen more measured positioning despite repeated earnings beats.
Looking at trend consistency, relative price momentum, and catalyst strength, Tickeron’s AI currently leans toward TENB over QLYS. Tenable’s improving platform mix, accelerating expansion metrics, and upward analyst revisions point to more favorable near-term positioning, while Qualys’s steadier but slower growth has not produced the same price momentum. This view is probabilistic and reflects current conditions rather than a firm prediction.
I often review Tickeron’s AI Trading Bots to see how automated strategies are positioned around names like these. The platform lets me quickly compare performance across different market environments without building every rule from scratch, which adds useful context to the manual analysis.
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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.
QLYS's Aroon Indicator triggered a bullish signal on October 30, 2026. Tickeron's A.I.dvisor detected that the AroonUp green line is above 70 while the AroonDown red line is below 30. When the up indicator moves above 70 and the down indicator remains below 30, it is a sign that the stock could be setting up for a bullish move. Traders may want to buy the stock or look to buy calls options. A.I.dvisor looked at 211 similar instances where the Aroon Indicator showed a similar pattern. In 153 of the 211 cases, the stock moved higher in the days that followed. This puts the odds of a move higher at 73%.
The Momentum Indicator moved above the 0 level on October 21, 2026. You may want to consider a long position or call options on QLYS as a result. In 54 of 81 past instances where the momentum indicator moved above 0, the stock continued to climb. The odds of a continued upward trend are 67%.
The Moving Average Convergence Divergence (MACD) for QLYS just turned positive on October 22, 2026. Looking at past instances where QLYS's MACD turned positive, the stock continued to rise in 33 of 52 cases over the following month. The odds of a continued upward trend are 63%.
QLYS moved above its 50-day moving average on October 19, 2026 date and that indicates a change from a downward trend to an upward trend.
Following a +5.17% 3-day Advance, the price is estimated to grow further. Considering data from situations where QLYS advanced for three days, in 220 of 330 cases, the price rose further within the following month. The odds of a continued upward trend are 67%.
The 10-day RSI Indicator for QLYS moved out of overbought territory on October 30, 2026. This could be a bearish sign for the stock. Traders may want to consider selling the stock or buying put options. Tickeron's A.I.dvisor looked at 31 similar instances where the indicator moved out of overbought territory. In 19 of the 31 cases, the stock moved lower in the following days. This puts the odds of a move lower at 61%.
The Stochastic Oscillator demonstrated that the ticker has stayed in the overbought zone for 5 days. The longer the ticker stays in the overbought zone, the sooner a price pull-back is expected.
Following a 3-day decline, the stock is projected to fall further. Considering past instances where QLYS 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 71%.
QLYS broke above its upper Bollinger Band on October 22, 2026. This could be a sign that the stock is set to drop as the stock moves back below the upper band and toward the middle band. You may want to consider selling the stock or exploring put options.
The Tickeron PE Growth Rating for this company is 9 (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 SMR rating for this company is 26 (best 1 - 100 worst), indicating very strong sales and a profitable 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 Price Growth Rating for this company is 34 (best 1 - 100 worst), indicating steady price growth. QLYS’s price grows at a higher rate over the last 12 months as compared to S&P 500 index constituents.
The Tickeron Profit vs. Risk Rating rating for this company is 49 (best 1 - 100 worst), indicating well-balanced risk and returns. The average Profit vs. Risk Rating rating for the industry is 91, placing this stock slightly better than average.
The Tickeron Valuation Rating of 85 (best 1 - 100 worst) indicates that the company is significantly overvalued 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 (13.791) is normal, around the industry mean (15.569). P/E Ratio (38.641) is within average values for comparable stocks, (58.592). Projected Growth (PEG Ratio) (2.983) is also within normal values, averaging (3.648). Dividend Yield (0.000) settles around the average of (0.269) among similar stocks. P/S Ratio (9.320) is also within normal values, averaging (103.889).
The average fundamental analysis ratings, where 1 is best and 100 is worst, are as follows
a provider of cloud security and compliance solutions
Industry ComputerCommunications