PubMatic (PUBM) vs Similarweb (SMWB)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
PubMatic (PUBM) has outperformed Similarweb (SMWB) over the past year, gaining 124.5% versus a loss of 8.5%. Over five years, PUBM leads with a -36.3% price change compared with -59.4% for SMWB. PubMatic is the larger company by market cap ($850.9 million vs $743.9 million), about 1.1 times the size.
On valuation, PubMatic trades at a lower forward P/E (23.0x vs 27.0x for Similarweb).
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | PUBM | SMWB |
|---|---|---|
| Share price | $18.68 | $8.43 |
| Market cap | $850.88M | $743.94M |
| 1-day change | +0.59% | +3.69% |
| YTD return | +109.36% | +8.54% |
| 1-year return | +124.55% | -8.55% |
| 5-year return | -36.27% | -59.41% |
| Forward P/E | 22.97 | 26.98 |
| EPS (TTM) | $-0.29 | $-0.25 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $19.48 | $9.50 |
| 52-week low | $6.15 | $2.22 |
| Distance from 52-week high | -4.11% | -11.26% |
| Analyst consensus | buy | buy |
| Avg. price target upside | +12.42% | +28.47% |
| Average volume | 677.77K | 818.17K |
| Shares outstanding | 37.30M | 88.25M |
| Employees | 1,030 | 1,000 |
| Sector | Technology | Technology |
| Industry | Computer Software: Programming Data Processing | Computer Software: Programming Data Processing |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- PUBM has outperformed SMWB by 133.1 percentage points over the past year.
About PubMatic
PUBM stock →PubMatic, Inc., a technology company, engages in the provision of a cloud infrastructure platform that enables real time programmatic advertising transactions for digital content creators, advertisers, agencies, agency trading desks, and demand side platforms worldwide. Its PubMatic SSP, a sell side platform for the purchase and sale of digital advertising inventory for publishers and buyers.
Technology · Computer Software: Programming Data Processing · 1,030 employees
About Similarweb
SMWB stock →Similarweb Ltd. provides digital data and analytics for power critical business decisions in the United States, Europe, the Asia Pacific, the United Kingdom, Israel, and internationally.
Technology · Computer Software: Programming Data Processing · 1,000 employees
PUBM vs SMWB FAQ
Which is bigger, PubMatic or Similarweb?
PubMatic (PUBM) is larger, with a market capitalization of $850.88M compared with $743.94M for Similarweb (SMWB).
Which stock has performed better over the past year, PUBM or SMWB?
PUBM returned +124.55% over the past 12 months, compared with -8.55% for SMWB (price return, excluding dividends). Past performance does not predict future results.
Are PubMatic and Similarweb in the same industry?
Yes. Both are classified in the Computer Software: Programming Data Processing industry within the Technology sector.