Qualysvs.Tenable
QLYS vs TENB · both in Vulnerability management, part of the Defense, security & space value chain: Maps and prioritizes weaknesses before attackers exploit them.
Qualys is about 1.5× larger than Tenable by market cap; Qualys trades at the lower P/E (32.6 vs 650.1); year to date, Tenable leads (+65.5% vs +46.5%).
Side by side
| QLYS | TENB | |
|---|---|---|
| Market cap | $6.7B | $4.4B |
| Price | $193.86 | $39.01 |
| Today | −0.5% | +0.2% |
| Return YTD | +46.5% | +65.5% |
| Return 1Y | +52.6% | +33.4% |
| Since June 26, 2026 | +57.3% | +29.1% |
| P/E | 32.6 | 650.1 |
| P/S | 9.6 | 4.2 |
| P/B | 12.0 | 22.1 |
Data as of 2026-10-08 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
The two companies
QualysQLYS
Vulnerability scanning and compliance monitoring, all of it delivered from the cloud.
Full QLYS profile →TenableTENB
Nessus scanning grew into exposure management: mapping weaknesses across IT and OT estates and ranking which ones to close first.
Full TENB profile →More QLYS & TENB comparisons
Other head-to-heads in the Vulnerability management segment.