AAPL vs ADP: Apple Inc. vs Automatic Data Processing, Inc. Historical Returns & Investment Comparison
This AAPL vs ADP comparison analyzes the historical stock performance of Apple Inc. and Automatic Data Processing, Inc. side-by-side. Using real, adjusted market data, this tool shows how identical investments in both stocks would have performed over time—highlighting differences in returns, volatility, and consistency across market cycles.
Use the interactive calculator below to adjust the investment amount and time period, visualizing how Apple Inc. and Automatic Data Processing, Inc. have historically performed against each other.
Company Profiles
Apple Inc.
AAPL
Apple Inc. is a global leader in consumer electronics, software, and online services. Founded in a garage by Steve Jobs, Steve Wozniak, and Ronald Wayne, the company has evolved into one of the world's most valuable and influential brands. Apple designs, manufactures, and markets a broad range of high-end consumer technology products, including the iPhone, iPad, Mac, and Apple Watch. Beyond hardware, the company has built a massive digital ecosystem through its Services segment, which includes the App Store, Apple Music, iCloud, and Apple Pay. In recent years, Apple has significantly vertically integrated its supply chain by developing its own custom silicon (M-series and A-series chips) and has expanded into spatial computing with the Vision Pro platform.
Key Innovations
- ✓Graphical User Interface (GUI) popularized by the Macintosh
- ✓Multi-touch technology and the modern smartphone interface
- ✓Apple Silicon (A-series and M-series SoC architecture)
- ✓FaceID and TouchID biometric security systems
- ✓Retina Display high-density screen technology
- ✓MagSafe charging and accessory ecosystem
- ✓Spatial Computing (VisionOS) for mixed-reality environments
Business Segments
- iPhoneThe company's primary hardware driver, consisting of its line of smartphones based on the iOS operating system.
- MacPersonal computers based on the macOS operating system, including the MacBook Air, MacBook Pro, iMac, Mac mini, and Mac Studio, now powered by Apple Silicon.
- iPadMulti-purpose tablets based on the iPadOS operating system, spanning from the iPad mini to the high-performance iPad Pro.
Automatic Data Processing, Inc.
ADP
Automatic Data Processing, Inc. (ADP) is a comprehensive global provider of cloud-based human capital management (HCM) solutions that unite HR, payroll, talent, time, tax and benefits administration, and a leader in business outsourcing services, analytics and compliance expertise.
Key Innovations
- ✓Early adoption of technology for payroll processing, including mainframe computers and online services.
- ✓Development of comprehensive, cloud-based human capital management (HCM) solutions.
Business Segments
- Employer ServicesOffers a comprehensive range of HR and payroll solutions to clients of all sizes.
- Professional Employer Organization (PEO) ServicesProvides HR outsourcing solutions to small and mid-sized businesses through a co-employment model.
How This Comparison Works
Our stock comparison tool uses adjusted closing prices to calculate year-by-year returns for both stocks. This ensures an apples-to-apples comparison that accounts for:
- ✓Dividends: All dividend payments are reinvested
- ✓Stock splits: Historical prices are adjusted for all splits
- ✓Head-to-head record: Shows which stock outperformed each year
- ✓Statistical analysis: Average returns, best/worst years, and win rates
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Important Disclaimer
This comparison tool is for educational and informational purposes only and does not constitute financial, investment, or trading advice. Past performance is not indicative of future results. Historical returns include dividends and stock splits but do not account for taxes, fees, inflation, or individual circumstances. Stock market investments carry risk, including the potential loss of principal. Always consult with a qualified financial advisor before making investment decisions. The data presented is based on historical market data and may contain inaccuracies or delays.