Diodes (DIOD) vs OSI Systems (OSIS)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Diodes (DIOD) has outperformed OSI Systems (OSIS) over the past year, gaining 83.0% versus a loss of 22.2%. Over five years, OSIS leads with a +103.8% price change compared with +9.9% for DIOD. Diodes is the larger company by market cap ($4.43 billion vs $3.08 billion), about 1.4 times the size.
On valuation, OSI Systems trades at a lower forward P/E (15.1x vs 16.5x for Diodes). OSI Systems converts more of its revenue into profit, with a net margin of 8.7% versus 4.5%.
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 | DIOD | OSIS |
|---|---|---|
| Share price | $96.24 | $193.36 |
| Market cap | $4.43B | $3.08B |
| 1-day change | -4.38% | -0.36% |
| YTD return | +95.05% | -24.19% |
| 1-year return | +83.04% | -22.22% |
| 5-year return | +9.94% | +103.75% |
| P/E ratio (TTM) | 51.47 | 21.60 |
| Forward P/E | 16.51 | 15.09 |
| EPS (TTM) | $1.87 | $8.95 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $1.48B | $1.79B |
| Revenue growth (YoY) | +13.04% | +4.25% |
| Net income (latest FY) | $66.14M | $154.71M |
| Gross margin | 31.20% | 33.21% |
| Operating margin | 2.39% | 12.26% |
| Net margin | 4.46% | 8.66% |
| 52-week high | $125.99 | $311.72 |
| 52-week low | $42.28 | $186.50 |
| Distance from 52-week high | -23.61% | -37.97% |
| Analyst consensus | strong_buy | strong_buy |
| Avg. price target upside | +59.32% | +43.92% |
| Average volume | 570.23K | 232.36K |
| Shares outstanding | 46.05M | 15.94M |
| Employees | 7,989 | 7,806 |
| Sector | Technology | Technology |
| Industry | Semiconductors | Semiconductors |
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
- DIOD has outperformed OSIS by 105.3 percentage points over the past year.
- Diodes trades at a higher earnings multiple (51.5x vs 21.6x trailing P/E).
- Diodes grew revenue faster in its latest fiscal year (+13.04% vs +4.25%).
About Diodes
DIOD stock →Diodes Incorporated, together with its subsidiaries, provides semiconductor products in Asia, the Americas, and Europe. The company offers MOSFET and SiC MOSFET discrete semiconductor products; data line protection, power line protection, thyrister, USB Type-C protection, and transient voltage suppressor protection devices; Schottky diodes, small signal switching diodes, Zener diodes, and SiC diodes; and bridges, super barrier rectifiers, Schottky rectifiers, Schottky bridge rectifiers, and fast and ultra-fast rectifiers.
Technology · Semiconductors · 7,989 employees
About OSI Systems
OSIS stock →OSI Systems, Inc. designs and manufactures specialized electronic systems and components for critical applications in the United States, Mexico, the rest of Americas, the United Kingdom, Europe, the Middle East, Africa, and the Asia-Pacific.
Technology · Semiconductors · 7,806 employees
DIOD vs OSIS FAQ
Which is bigger, Diodes or OSI Systems?
Diodes (DIOD) is larger, with a market capitalization of $4.43B compared with $3.08B for OSI Systems (OSIS).
Which stock has performed better over the past year, DIOD or OSIS?
DIOD returned +83.04% over the past 12 months, compared with -22.22% for OSIS (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, DIOD or OSIS?
OSIS has the lower trailing P/E at 21.6, versus 51.5 for DIOD. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Are Diodes and OSI Systems in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.