CMI vs SPY: Cummins Inc. vs SPDR S&P 500 ETF Trust Historical Returns & Investment Comparison

This CMI vs SPY comparison analyzes the historical stock performance of Cummins Inc. and SPDR S&P 500 ETF Trust 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 Cummins Inc. and SPDR S&P 500 ETF Trust have historically performed against each other.

Company Profiles

Cummins Inc.

CMI

Cummins Inc. is a global power leader that designs, manufactures, distributes, and services a broad portfolio of power solutions. These include diesel and natural gas engines, hybrid and electric powertrains, filtration, aftertreatment, turbochargers, fuel systems, controls systems, air handling systems, automated transmissions, electric power generation systems, and batteries.

Key Innovations

✓Pioneered the development of high-performance diesel engines for a wide range of applications, including commercial vehicles and automotive use.
✓Invented the 'Jake Brake' (engine brake), a significant safety innovation for heavy-duty trucks.

Business Segments

Engine
Manufactures and markets a broad range of diesel and natural gas engines for the on-highway and off-highway markets.
Distribution
Provides sales, service, and support for Cummins products to end users through a global network.
Components
Supplies filtration, aftertreatment, turbochargers, fuel systems, and automated transmission products.

SPDR S&P 500 ETF Trust

SPY

SPY is the first exchange-traded fund (ETF) listed in the US. It is designed to track the S&P 500 Index, which measures the performance of the large-cap segment of the US equity market.

Key Innovations

✓First US-listed ETF

Business Segments

ETF
Passive investment vehicle tracking the S&P 500.

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.