SPY vs TLT: SPDR S&P 500 ETF Trust vs iShares 20+ Year Treasury Bond ETF Historical Returns & Investment Comparison

This SPY vs TLT comparison analyzes the historical stock performance of SPDR S&P 500 ETF Trust and iShares 20+ Year Treasury Bond ETF 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 annual returns and consistency across market cycles.

Use the interactive calculator below to adjust the investment amount and time period, visualizing how SPDR S&P 500 ETF Trust and iShares 20+ Year Treasury Bond ETF have historically performed against each other.

Company Profiles

SPDR S&P 500 ETF Trust

SPY

SPDR S&P 500 ETF Trust (SPY) is an exchange-traded fund managed by State Street Global Advisors that provides investors with targeted exposure to U.S. Large-Cap Equity by tracking the S&P 500 Index. The fund is structured to offer efficient, liquid, and low-cost access to its underlying asset class, utilizing continuous creation and redemption mechanisms to maintain tight alignment between market price and Net Asset Value (NAV). Widely utilized by institutional wealth managers, pension funds, and retail investors alike, SPY plays a central role in modern portfolio construction, asset allocation, and tactical risk management.

Key Innovations

✓Intra-day secondary market liquidity for benchmark S&P 500 Index exposure.
✓In-kind creation and redemption process mitigating embedded tax capital gains distributions.
✓Ultra-low expense ratio cost structure enabling compounding long-term investment returns.
✓Institutional-grade portfolio transparency with daily published holding disclosure.

Business Segments

Core Equity / Asset Portfolio
Direct holdings of underlying constituent securities comprising the S&P 500 Index.
Creation and Redemption Mechanism
Operational framework facilitating institutional Authorized Participants in exchanging basket securities for fund shares.
Securities Lending & Yield Optimization
Program generating incremental income by lending portfolio securities to institutional counterparties under collateralized agreements.

iShares 20+ Year Treasury Bond ETF

TLT

iShares 20+ Year Treasury Bond ETF (TLT) is an exchange-traded fund managed by BlackRock iShares that provides investors with targeted exposure to Long-Term U.S. Treasuries by tracking the ICE U.S. Treasury 20+ Year Index. The fund is structured to offer efficient, liquid, and low-cost access to its underlying asset class, utilizing continuous creation and redemption mechanisms to maintain tight alignment between market price and Net Asset Value (NAV). Widely utilized by institutional wealth managers, pension funds, and retail investors alike, TLT plays a central role in modern portfolio construction, asset allocation, and tactical risk management.

Key Innovations

✓Intra-day secondary market liquidity for benchmark ICE U.S. Treasury 20+ Year Index exposure.
✓In-kind creation and redemption process mitigating embedded tax capital gains distributions.
✓Ultra-low expense ratio cost structure enabling compounding long-term investment returns.
✓Institutional-grade portfolio transparency with daily published holding disclosure.

Business Segments

Core Equity / Asset Portfolio
Direct holdings of underlying constituent securities comprising the ICE U.S. Treasury 20+ Year Index.
Creation and Redemption Mechanism
Operational framework facilitating institutional Authorized Participants in exchanging basket securities for fund shares.
Securities Lending & Yield Optimization
Program generating incremental income by lending portfolio securities to institutional counterparties under collateralized agreements.

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: Prices are dividend-adjusted, reflecting the effect of dividend payments over time
✓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.