Mercury Systems (MRCY) vs Plexus (PLXS)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Plexus (PLXS) has outperformed Mercury Systems (MRCY) over the past year, gaining 77.5% versus a loss of 6.4%. Over five years, PLXS leads with a +179.6% price change compared with +56.8% for MRCY. Plexus is the larger company by market cap ($6.97 billion vs $4.78 billion), about 1.5 times the size, while Mercury Systems is growing revenue faster (+7.9% vs +1.8%).
On valuation, Plexus trades at a lower forward P/E (25.8x vs 35.2x for Mercury Systems). Plexus converts more of its revenue into profit, with a net margin of 4.3% versus -3.0%.
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 | MRCY | PLXS |
|---|---|---|
| Share price | $78.52 | $261.38 |
| Market cap | $4.78B | $6.97B |
| 1-day change | -1.54% | -1.95% |
| YTD return | +7.55% | +77.81% |
| 1-year return | -6.43% | +77.47% |
| 5-year return | +56.76% | +179.64% |
| P/E ratio (TTM) | — | 38.61 |
| Forward P/E | 35.21 | 25.83 |
| EPS (TTM) | $-0.50 | $6.77 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $983.62M | $4.03B |
| Revenue growth (YoY) | +7.85% | +1.82% |
| Net income (latest FY) | $-29.67M | $172.88M |
| Gross margin | 28.58% | 10.08% |
| Operating margin | 0.03% | 5.02% |
| Net margin | -3.02% | 4.29% |
| 52-week high | $128.45 | $307.06 |
| 52-week low | $65.04 | $132.03 |
| Distance from 52-week high | -38.87% | -14.88% |
| Analyst consensus | none | none |
| Avg. price target upside | +47.35% | +16.54% |
| Average volume | 695.80K | 255.29K |
| Shares outstanding | 60.86M | 26.65M |
| Employees | 2,102 | 20,000 |
| Sector | Technology | Technology |
| Industry | Electrical Products | Electrical Products |
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
- PLXS has outperformed MRCY by 83.9 percentage points over the past year.
- Plexus is more profitable, keeping 4.3 cents of every revenue dollar as net income versus -3.0 cents for Mercury Systems.
- Mercury Systems grew revenue faster in its latest fiscal year (+7.85% vs +1.82%).
About Mercury Systems
MRCY stock →Mercury Systems, Inc., engages in the aerospace and defense electronics industry. The company manufactures and sells components, products, modules, and subsystems for defense prime contractors, original equipment manufacturers, government, and commercial aerospace companies.
Technology · Electrical Products · 2,102 employees
About Plexus
PLXS stock →Plexus Corp. provides electronic manufacturing services in the United States, the Asia-Pacific, Europe, the Middle East, and Africa.
Technology · Electrical Products · 20,000 employees
MRCY vs PLXS FAQ
Which is bigger, Mercury Systems or Plexus?
Plexus (PLXS) is larger, with a market capitalization of $6.97B compared with $4.78B for Mercury Systems (MRCY).
Which stock has performed better over the past year, MRCY or PLXS?
PLXS returned +77.47% over the past 12 months, compared with -6.43% for MRCY (price return, excluding dividends). Past performance does not predict future results.
Are Mercury Systems and Plexus in the same industry?
Yes. Both are classified in the Electrical Products industry within the Technology sector.