TLT vs S&P 500: Which to Watch

Last Updated: June 2025

In 2022, TLT fell approximately 31% and the S&P 500 fell approximately 18% in the same calendar year. For investors who had treated bonds as a reliable counterweight to stocks, that year was a wake-up call. The traditional playbook broke down.

TLT (technically an ETF, not a stock, though it trades exactly like one through any standard brokerage account) and the S&P 500 are the two instruments most commonly weighed against each other when investors consider rotating from equities into long-duration Treasuries. The sections below cover the mechanical differences, historical performance across rate cycles, current macro positioning, and a scenario-based framework for your watchlist decision.

Key takeaways:

• TLT holds 20+ year U.S. Treasury bonds; its price falls when long-term yields rise and rises when yields fall
• The S&P 500 has outperformed TLT over nearly every 10-year horizon on a total return basis
• TLT's modified duration of approximately 17-18 years means a 1% rise in Treasury yields causes roughly a 17-18% price decline
• In 2022, both fell simultaneously because inflation forced rate hikes, breaking the historical negative correlation
• TLT's distribution yield (~4-5%) is meaningfully higher than the S&P 500's dividend yield (~1.3-1.5%), but price risk can erase that income advantage

Quick Comparison: TLT vs S&P 500 at a Glance

Source: iShares (TLT), State Street (SPY), Vanguard (VOO). Verify all figures at publication from fund provider pages. Past performance does not indicate future results.

What Is TLT? Understanding the iShares 20+ Year Treasury Bond ETF

TLT is the ticker symbol for the iShares 20+ Year Treasury Bond ETF, an exchange-traded fund issued by BlackRock under its iShares brand that holds U.S. government bonds with maturities of 20 years or more. Despite being called a stock in casual conversation, TLT is an ETF. It trades on the NASDAQ like a stock and can be bought through any standard brokerage account, but its value is driven by Treasury bond prices, not corporate earnings.

TLT holds a portfolio of long-term U.S. Treasury bonds, debt instruments issued by the federal government and backed by its full faith and credit. These carry maturities exceeding 20 years, which is the critical detail that determines everything else about how TLT behaves. The bonds pay fixed coupon payments, which TLT passes through to investors as monthly distributions.

All performance comparisons in this article use total return (price appreciation plus any distributions or dividends received and reinvested), not price return alone. TLT's monthly distributions are substantial enough that price-return-only comparisons meaningfully understate what an investor actually received.

How TLT Works: The Inverse Price-Yield Relationship Explained

TLT's price moves in the opposite direction of long-term Treasury yields. This is the inverse price/yield relationship (when bond yields rise, bond prices fall, and vice versa), and it is the single most important mechanic to understand before evaluating TLT against any equity instrument.

Here is why it works this way: when new bonds are issued at higher yields, the older bonds in TLT's portfolio become less valuable by comparison. Their fixed coupon payments are now worth less relative to what a buyer could get on the open market. So TLT's NAV (net asset value, the per-share value of its underlying bond holdings) falls.

The magnitude of that price move depends on TLT's modified duration (a measure of how much the price changes per 1% move in long-term Treasury yields). TLT's modified duration is approximately 17-18 years, verified at publication from the iShares 20+ Year Treasury Bond ETF fact sheet. In practical terms, a 1% rise in long-term Treasury yields causes TLT's price to fall approximately 17-18%.

To put that in perspective: a short-term bond ETF with a 2-year duration would fall only about 2% on the same 1% rate move. The S&P 500 has no equivalent mechanical duration sensitivity. Equity valuations respond to rising rates through earnings multiples and financing costs, but there is no mathematical lockstep between rate changes and S&P 500 prices the way there is for TLT.

What Is the S&P 500? A Baseline for Comparison

The S&P 500 is a market-capitalization weighted index of 500 large U.S. companies, maintained by S&P Dow Jones Indices, and represents approximately 80% of U.S. equity market value. It is an index, not a directly purchasable instrument. Investors gain exposure through ETFs: SPY (SPDR S&P 500 ETF Trust, issued by State Street Global Advisors) is the most actively traded and serves as the primary comparison vehicle in this article. Long-term investors often prefer VOO (Vanguard S&P 500 ETF) for its lower 0.03% expense ratio, compared to SPY's 0.09%.

The S&P 500's long-run average annual total return is approximately 10%, driven by corporate earnings growth and economic expansion. Its current dividend yield is approximately 1.3-1.5% (verify at publication from S&P 500 index data). The index is currently dominated by mega-cap technology companies like Apple, Microsoft, NVIDIA, and Amazon, which affects how it correlates with bond markets during different macro regimes.

The S&P 500 carries no interest rate duration risk in the mechanical sense that TLT does. When rates rise, equities face headwinds through valuation compression and higher borrowing costs, but companies can grow earnings to offset those pressures. TLT cannot.

TLT vs S&P 500 Performance: A Historical Comparison

Over the past 10 years, the S&P 500 has significantly outperformed TLT in total return terms. That headline conclusion holds across most multi-year measurement windows. The aggregate figure hides the specific environments where TLT has been the stronger instrument, and understanding those environments is the point of this comparison.

All figures below represent total return (price change plus distributions reinvested). Verify at publication from iShares (TLT) and S&P Global (S&P 500).

Source: iShares (TLT total return), S&P Global (S&P 500 total return). All figures are approximate total return. Verify at publication. Past performance does not indicate future results.

The 10-year cumulative gap is the most important data point for long-term investors. Across stable growth, rising rate, and equity bull market environments, the S&P 500 has consistently compounded at a faster rate. TLT's outperformance has historically been concentrated in shorter windows: recession scares, flight-to-safety events, and rate-cutting cycles.

The 2022 Exception: When Bonds and Stocks Both Fell

In 2022, TLT fell approximately 31% and the S&P 500 fell approximately 18.1% in the same year. This was the worst annual performance for a traditional 60/40 portfolio in decades, and the event that forced investors to reconsider whether bonds still hedge stocks.

The causal chain is specific. Inflation in the U.S. surged to 40-year highs, with CPI (Consumer Price Index) peaking above 9% in June 2022. The Federal Reserve (the U.S. central bank's rate-setting body, operating through the FOMC) responded with the most aggressive rate hike cycle in four decades, raising the federal funds rate from near zero to above 4% in less than a year. Long-term Treasury yields moved sharply: the 10-year Treasury yield rose from approximately 1.5% at the start of 2022 to approximately 3.8% by year-end. TLT's duration of approximately 17-18 years amplified every yield increase into a large price decline.

The hedge failed because the shock was inflationary, not deflationary. The stock-bond negative correlation holds in deflationary or recessionary environments like 2001, 2008, and 2020, when the Fed cuts rates and investors seek the safety of Treasuries. It breaks down when inflation forces the Fed to raise rates, because rate hikes hurt bonds mechanically via duration and hurt stocks through valuation compression simultaneously.

TLT did not protect investors during the 2022 market decline.

Rolling TLT-S&P 500 Correlation:

Source: Correlation estimates based on Morningstar and Bloomberg rolling return data. Verify current figures at publication.

Interest Rates and TLT: What Every Investor Needs to Understand

The Federal Reserve sets the federal funds rate, the overnight lending rate between banks, but TLT's price responds primarily to long-term Treasury yields (the 10-year and 30-year), which are market-determined and don't always move in lockstep with the fed funds rate. This distinction matters more than most articles acknowledge.

When the Fed raises the funds rate, short-term Treasury yields typically rise quickly. Long-term yields may also rise if markets expect sustained inflation, but they can diverge significantly. A Fed rate cut does not automatically guarantee TLT will rise if long-term yields stay elevated because of fiscal deficit concerns or persistent inflation expectations. In 2023, the Fed held rates high but long-term yields climbed to 5% on the 10-year, pushing TLT lower even as the funds rate was stable.

The yield curve plots Treasury yields across maturities from short-term (3-month bills) to long-term (30-year bonds). TLT holds the long end of this curve, so its price responds most directly to movements in 10-year and 30-year Treasury yields, not the fed funds rate. When the yield curve steepens, with long-term yields falling faster than short-term yields, TLT tends to benefit most.

For active traders: CPI prints above expectations typically push long-term yields higher, creating headwinds for TLT. CPI prints below expectations tend to increase rate-cut expectations, pushing yields lower and supporting TLT. FOMC hawkish language pressures TLT; dovish language or actual rate cuts tend to benefit it.

Unlike TIPS (Treasury Inflation-Protected Securities, which adjust their principal value with inflation), TLT holds standard fixed-rate Treasury bonds and offers no inflation protection. When inflation rises, TLT typically falls.

When Does TLT Go Up? The Rate-Cut Playbook

TLT has historically tended to go up in these conditions:

• The Federal Reserve cuts interest rates or signals future cuts, which tends to push long-term Treasury yields lower
• Long-term Treasury yields (10-year, 30-year) decline for any reason, including recession fears or weak economic data
• Investors flee equities during recessions or market crashes, a pattern called flight to safety, when capital moves from riskier assets into U.S. Treasuries
• Inflation cools significantly, reducing pressure for the Fed to keep rates elevated
• The yield curve steepens, with long-term yields falling faster than short-term yields

The upside from rate cuts is amplified by TLT's duration. A 1% decline in long-term Treasury yields translates to approximately 17-18% gain in TLT's price. The 2019 Fed rate-cutting cycle is a concrete example: TLT gained approximately 14.9% in total return that year as the Fed cut rates three times and long-term yields declined.

The important caveat: the Fed controls short-term rates directly. Long-term yields are set by the bond market and can stay elevated even as the funds rate falls, as happened in late 2023 and parts of 2024.

When Does TLT Underperform? The Rate-Hike Risk

TLT underperforms most severely when long-term Treasury yields rise. The relationship is mechanical:

• Rising yields reduce the present value of TLT's bond holdings, causing price declines
• Every 1% increase in long-term Treasury yields causes approximately a 17-18% decline in TLT's price based on its current duration
• Rapid rate hike cycles, like 2022, compound these losses across multiple rate moves in quick succession

In 2022, the 10-year Treasury yield rose from approximately 1.5% to approximately 3.8%. That move of roughly 2.3 percentage points, magnified by TLT's duration, drove the approximately 31% total return loss.

The S&P 500 is also hurt by rising rates through higher discount rates compressing valuation multiples and higher borrowing costs squeezing earnings. But a company can grow its earnings to partially offset valuation pressure. TLT's bond prices are mathematically locked to yield levels. That asymmetry cuts both ways: the same sensitivity that creates outsized losses in rising rate environments creates outsized gains when rates fall.

TLT as a Portfolio Hedge: Does the Bond-Stock Relationship Still Hold?

TLT has historically had a negative correlation with the S&P 500, meaning when stocks fell, TLT tended to rise. Correlation measures how two assets move relative to each other: a negative correlation means they tend to move in opposite directions, a positive correlation means they tend to move in the same direction. The pre-2022 negative correlation ranged from approximately -0.2 to -0.4 on a rolling basis.

This negative correlation was the mechanism behind the classic 60/40 portfolio (which allocates 60% to equities and 40% to bonds to balance growth and stability). The logic: when recessions hit and stocks fall, the Fed cuts rates, Treasuries rally, and the bond component cushions losses.

Flight to safety drives this pattern. When investors face recession scares or market crashes, they sell equities and buy U.S. Treasuries as a safe haven. In 2008, TLT gained approximately 33.8% while the S&P 500 fell approximately 37%. In March 2020 during the COVID crash, TLT initially surged before equity markets recovered. TLT has historically tended to rise when the VIX (an index measuring implied volatility of S&P 500 options, often called the "fear index") spikes sharply, though the 2022 breakdown showed this relationship is conditional, not guaranteed.

The 2022 breakdown happened because the shock was inflationary. When inflation is the driver, the Fed's cure (rate hikes) damages both bonds via duration and stocks via valuation compression. There is no flight to safety when the safe asset is being mechanically damaged by the same policy hurting equities.

The correlation has been moving back toward negative territory in 2023-2024, consistent with the shift from an inflation-fighting rate-hike cycle to a rate-cutting cycle. Investors should not treat the negative correlation as a permanent feature. If inflation re-accelerates and forces the Fed back to hiking, 2022 can recur.

For those assessing TLT as a portfolio hedge: the hedge works in deflationary or recessionary crashes. It doesn't work in inflationary crashes. The key question to ask before sizing TLT as a hedge is: what kind of shock am I hedging against?

TLT vs S&P 500 for Income: Comparing Yield and Distributions

TLT's distribution yield (the annual income TLT pays out as a percentage of its price, derived from coupon payments on its Treasury bond holdings) is approximately 4-5% annually (verify at publication from iShares), compared to the S&P 500's dividend yield of approximately 1.3-1.5% (verify at publication). That income gap is meaningful, but it comes with a caveat income-focused investors must understand.

TLT pays distributions, not dividends. The income comes from coupon payments on the Treasury bonds it holds, passed through to investors monthly. S&P 500 ETFs like SPY and VOO pay dividends from the underlying companies' profits. The terminology matters: distribution yield for TLT, dividend yield for the S&P 500, as these reflect fundamentally different income sources.

In 2022, TLT's distribution yield of approximately 4% did not offset a -31% price loss. Total return was approximately -31%, not -27%. TLT's distributions are variable, not a fixed coupon. When Treasury yields are high, as in 2023-2024, distributions are elevated. When rates fall, the distribution yield declines as lower-yielding bonds gradually replace older, higher-coupon bonds in the portfolio. There is a lag because TLT holds bonds with fixed coupons set at their original issuance.

Source: iShares (TLT), fund provider pages (SPY/VOO). Verify all figures at publication. Consult a tax professional for your specific situation.

For income-focused investors: TLT's nominal yield advantage is real, but total return is what you actually receive. If TLT's price falls 10% while you're collecting a 4.5% distribution, your total return is negative. The income advantage only works if TLT's price is stable or rising, which requires a falling or stable rate environment.

TLT vs S&P 500: Side-by-Side Comparison

The key difference between TLT and the S&P 500 is what they hold: TLT holds long-term U.S. Treasury bonds and rises when interest rates fall, while the S&P 500 tracks 500 large U.S. company stocks and rises with corporate earnings and economic growth. They carry different risks, serve different portfolio roles, and perform best in different macro environments.

Source: iShares (TLT), S&P Global / State Street (SPY), Vanguard (VOO). All return figures are total return. Verify all current figures at publication.

For the conditional verdict on which to watch right now, see the scenario framework and final verdict below.

When to Watch TLT vs S&P 500: A Scenario-Based Framework

Your macro view determines which instrument has historically offered better positioning. The following framework maps six market environments to their historical TLT vs S&P 500 outcomes.

TLT has historically tended to rise when:

• The Federal Reserve cuts rates or signals future cuts
• Long-term Treasury yields decline
• Investors flee equities in a recession or fear-driven crash
• Inflation cools significantly

The scenario matrix below translates those conditions into a decision framework. Every cell reflects historical tendencies, not guaranteed outcomes. Past performance does not indicate future results.

Note: All entries reflect historical tendencies in similar macro environments, not guaranteed outcomes. Past performance does not indicate future results.

The yield curve provides an additional signal for active traders. When the yield curve steepens, with long-term yields falling faster than short-term yields, TLT tends to benefit most. When it inverts, with short-term rates higher than long-term rates, this has historically preceded recessions, a scenario where TLT has tended to outperform equities.

For 60/40 investors: TLT can serve as the bond component, but its duration of approximately 17-18 years makes it more volatile than typical diversified bond funds. AGG (iShares Core U.S. Aggregate Bond ETF), with approximately 6 years duration, offers bond exposure with meaningfully less price sensitivity to rate changes for investors who want lower-risk bond allocation.

Current Macro Environment: TLT vs S&P 500 Right Now

Last Updated: June 2025

The Federal Reserve initiated a rate-cutting cycle in September 2024, referencing data verified against Federal Reserve rate decision history, and reduced the federal funds rate multiple times through early 2025. Long-term Treasury yields, however, have not declined in proportion to short-term rate cuts. The 10-year Treasury yield has remained elevated, reflecting ongoing market concerns about U.S. fiscal deficits and persistence in services inflation. This disconnect between short-term Fed policy and long-term Treasury yields is the defining tension for TLT in the current environment.

In 2024, the S&P 500 gained approximately 25% in total return while TLT gained approximately 1.9%, despite the rate-cutting environment. The gap reflects that bond market participants priced in limited long-term yield decline even as the Fed moved short-term rates lower. TLT recovered from its 2022-2023 losses only partially.

For active traders monitoring TLT positioning right now: watch CPI data and FOMC statement language. CPI prints above expectations tend to push long-term yields higher, which creates headwinds for TLT. CPI prints below expectations tend to increase market confidence in further rate cuts, which supports TLT. FOMC language signaling concern about growth or employment is typically positive for TLT; language signaling concern about inflation is typically negative.

The question of bonds vs. stocks right now comes down to one variable: whether long-term Treasury yields decline from current levels. If they do, TLT benefits from its duration-amplified price sensitivity. If they stay elevated or rise further, the S&P 500 remains the stronger instrument by the historical patterns documented above.

TLT vs S&P 500 Verdict: Which Should You Watch in Today's Market?

The conditional recommendation below is organized by investor type. Each scenario reflects historical patterns, not forecasts.

For long-term growth investors (10+ year horizon): The S&P 500 has outperformed TLT over nearly every multi-decade total return window in history. If you're accumulating wealth for retirement or long-term financial goals, the S&P 500 has historically been the stronger vehicle. TLT belongs in your analysis only if you have a specific macro thesis for substantially declining long-term Treasury yields.

For investors who believe long-term Treasury yields will decline materially: TLT may be worth watching. Every 1% decline in 10-year and 30-year Treasury yields translates to approximately 17-18% price appreciation in TLT based on its current duration. If you believe the combination of a slowing economy, continued Fed cuts, and cooling inflation will pull long-term yields meaningfully lower, TLT offers asymmetric upside relative to holding cash. Size the position in proportion to your conviction and risk tolerance. The risk: if inflation re-accelerates or fiscal pressures push long-term yields higher despite Fed cuts, TLT faces meaningful losses.

For income-focused investors near or in retirement: TLT's distribution yield of approximately 4-5% is meaningfully higher than the S&P 500's dividend yield of approximately 1.3-1.5%. If you need current income and can tolerate price volatility, TLT's monthly distributions are attractive relative to equities. The price risk from its duration is substantial. A 2% rise in long-term Treasury yields would cause approximately a 34-36% decline in TLT's price, which would take years of distributions to recover in total return terms.

Rather than choosing one over the other outright, many investors hold both: TLT providing income and potential downside protection in deflationary or recessionary scenarios, and the S&P 500 providing long-term growth. The right balance depends on your broader asset allocation, time horizon, and macro outlook. For investors who want bond exposure with less duration risk than TLT, AGG offers a more conservative alternative.

This verdict reflects macro conditions as of publication. These conditions change, and no allocation decision should rest solely on a single article.

Frequently Asked Questions: TLT vs S&P 500

Is TLT a stock or an ETF?

TLT is an ETF (exchange-traded fund), not a stock. It's issued by BlackRock under its iShares brand and holds U.S. Treasury bonds with maturities of 20 years or more. TLT trades on the NASDAQ with a real-time price and can be bought through any standard brokerage account, which is why it's commonly called a stock in casual conversation. The key distinction: its price is driven by interest rates and bond market movements, not company earnings or corporate performance.

Does TLT go up when the stock market goes down?

Not always. Historically, TLT has had a negative correlation with equities, meaning it often rose during equity market declines as investors sought Treasury bonds for safety. This pattern held in 2008 and March 2020. In 2022, however, both TLT and the S&P 500 fell simultaneously because the shock was inflation-driven rate hikes, not a recession or flight-to-safety event. The hedge works in deflationary crashes. It doesn't work when rising inflation forces the Fed to hike rates.

Is TLT a good investment when interest rates are falling?

TLT has historically performed well when long-term interest rates fall, because falling yields increase the price of its underlying bonds. Its modified duration of approximately 17-18 years amplifies that gain considerably. The important nuance is that the Fed controls short-term rates directly, while long-term Treasury yields are market-determined. A Fed rate cut does not automatically cause long-term yields to fall, particularly if inflation remains elevated or fiscal concerns persist.

Why did TLT fall so much in 2022?

TLT fell approximately 31% in 2022 because the Federal Reserve raised interest rates at the fastest pace in four decades to combat inflation that peaked above 9%. TLT's modified duration of approximately 17-18 years meant that every 1% rise in long-term Treasury yields translated to approximately 17-18% decline in price. The 10-year Treasury yield rose from approximately 1.5% to approximately 3.8% over the year. That move, magnified by TLT's duration sensitivity, drove its worst annual total return since the fund's inception in 2002.

Is TLT safer than the S&P 500?

Not necessarily, and the answer depends on which type of risk concerns you. TLT holds U.S. government bonds, so default risk is essentially zero. But interest rate risk is substantial: TLT lost approximately 31% in 2022 purely from rate movements, with no corporate default anywhere involved. The S&P 500 carries equity risk, including earnings disappointments, economic downturns, and valuation compression. Each instrument exposes you to a different type of loss. "Safer" requires specifying: safer from what?

What is TLT's current distribution yield compared to the S&P 500's dividend yield?

TLT's distribution yield is approximately 4-5% annually (verify at publication from iShares), compared to the S&P 500's dividend yield of approximately 1.3-1.5% (verify at publication). TLT's yield is variable and tied to prevailing 20+ year Treasury rates. It was below 2% in 2020-2021 when rates were near zero and rose as rates increased from 2022 through 2024. The income advantage is real, but TLT's price losses can easily exceed it in total return terms if long-term yields rise.

What are the main risks of holding TLT long-term?

The primary risk is interest rate risk: a 1% rise in long-term Treasury yields causes approximately a 17-18% decline in TLT's price due to its modified duration. Second is inflation risk: rising inflation drives rates higher and damages TLT, as 2022 demonstrated. Third is opportunity cost: over 10-year horizons, the S&P 500 has historically outperformed TLT substantially in total return terms, meaning holding TLT instead of equities has historically meant lower long-run returns. TLT is best suited as a tactical holding or portfolio diversifier rather than a primary growth vehicle.

How does TLT fit into a 60/40 portfolio?

TLT can serve as the bond component in a 60/40 portfolio (which allocates 60% to equities and 40% to bonds to balance growth and stability) because of its historically negative correlation with equities. However, 2022 showed the regime-dependency of that relationship: when inflation drives rate hikes, TLT and equities can fall together, undermining the diversification thesis. Investors using TLT as the bond component should understand that its approximately 17-18 year duration makes it more volatile than a typical diversified bond fund. AGG, with approximately 6 years duration, offers a less volatile alternative for the bond portion.

How does TLT compare to AGG?

TLT holds only 20+ year U.S. Treasury bonds with a duration of approximately 17-18 years, making it one of the most rate-sensitive bond ETFs available. AGG (iShares Core U.S. Aggregate Bond ETF) holds a broad mix of U.S. bonds, including Treasuries, corporate bonds, and mortgage-backed securities, with a much lower duration of approximately 6 years. TLT offers higher potential upside if long-term rates fall significantly, but it also carries greater downside if rates rise. AGG is a more conservative, broadly diversified bond holding for investors who want bond exposure without TLT's concentration and sensitivity.

Investment Disclaimer: This article is for informational purposes only and does not constitute financial advice. Past performance is not indicative of future results. Consult a qualified financial advisor before making investment decisions.