Five Against Note Spread (FAN)

Bond Analysis
intermediate
9 min read
Updated Jan 7, 2026

What Is the Five Against Note Spread (FAN)?

The Five Against Note Spread (FAN) measures the difference in yield between five-year Treasury notes and ten-year Treasury notes, providing insight into the intermediate portion of the yield curve and expectations about medium-term interest rate movements.

The Five Against Note Spread (FAN) is a fixed income indicator that measures the yield difference between five-year Treasury notes and ten-year Treasury notes, providing valuable insights into investor expectations about medium-term interest rates and economic conditions. This spread provides important insights into the intermediate portion of the U.S. Treasury yield curve, which is particularly sensitive to expectations about Federal Reserve monetary policy decisions and economic growth trajectories over the medium term. The spread is calculated by subtracting the yield of the 10-year Treasury note from the yield of the 5-year Treasury note. A positive FAN indicates that longer intermediate-term notes offer higher yields than shorter intermediate-term notes, which is the normal relationship in a healthy economic environment where investors demand compensation for taking on additional duration risk and uncertainty. FAN is especially useful for understanding market expectations about interest rate movements over the next 5-10 years and Fed policy direction. Since both securities have relatively short-to-intermediate maturities compared to 30-year bonds, changes in the spread are more directly influenced by monetary policy expectations than longer-term spreads like the Five Against Bond Spread (FAB). Fixed income traders and portfolio managers monitor FAN closely for signals about Fed policy direction and economic sentiment.

Key Takeaways

  • FAN measures the spread between 5-year and 10-year Treasury notes
  • It focuses on the intermediate segment of the yield curve
  • Changes in FAN reflect expectations about medium-term interest rates
  • A positive FAN indicates normal curve dynamics in the intermediate range
  • FAN is used by traders to assess monetary policy expectations

How the Five Against Note Spread Works

The Five Against Note Spread operates by comparing two points on the yield curve that are both heavily influenced by monetary policy expectations but respond differently to changing economic conditions and Fed communications. The 5-year note is more sensitive to immediate Federal Reserve actions and near-term policy outlook, while the 10-year note reflects longer-term growth expectations and inflation concerns. When the Federal Reserve signals that it will raise interest rates, the 5-year note yield typically increases more than the 10-year note yield, widening the FAN spread. This occurs because market participants price in the expectation that the Fed will be less aggressive with rate increases over the longer term, with policy eventually stabilizing or reversing to support economic growth once inflation is controlled. Conversely, when the Fed signals a more dovish stance or when economic growth concerns emerge in the data, the spread may narrow as yields on longer notes fall relative to shorter notes in anticipation of eventual rate cuts. This dynamic makes FAN a valuable tool for gauging the market's interpretation of Federal Reserve communications, economic outlook expectations, and policy direction.

Key Elements of the Five Against Note Spread

The FAN spread consists of two primary Treasury securities: the 5-year note and the 10-year note. Both are issued by the U.S. Department of the Treasury and are considered risk-free assets backed by the full faith and credit of the U.S. government. The calculation is straightforward: FAN = 5-year Treasury yield - 10-year Treasury yield. The spread typically ranges from -0.25% to +0.75% in normal market conditions, though it can move outside these ranges during periods of significant market stress or policy uncertainty. The spread's sensitivity to monetary policy makes it particularly useful for traders and economists trying to understand Federal Reserve intentions. Unlike longer-dated spreads, FAN reacts more quickly to changes in the federal funds rate and FOMC communications.

Important Considerations for FAN Trading

The Five Against Note Spread is highly responsive to Federal Open Market Committee (FOMC) announcements and Federal Reserve communications. Minutes from FOMC meetings, changes to the federal funds rate target, and updates to the Fed's economic projections can all significantly impact the spread. Economic data releases also influence FAN, particularly indicators that affect medium-term growth expectations. Employment data, GDP growth, and inflation readings can cause the spread to widen or narrow based on their implications for future monetary policy. Market participants should also consider the overall level of interest rates when interpreting FAN. The spread tends to be more volatile when interest rates are low, and its significance can change depending on where rates are in the economic cycle.

Advantages of Using FAN

The Five Against Note Spread provides a focused view of intermediate-term yield curve dynamics, making it easier to isolate monetary policy expectations from longer-term growth concerns. This specificity helps traders better understand the market's reaction to Federal Reserve actions. FAN responds more quickly to policy changes than longer-dated spreads, providing earlier signals about shifts in monetary policy expectations. This timeliness makes it valuable for traders who need to position ahead of policy decisions. The spread also helps in understanding the term structure of interest rates in the intermediate range, which is crucial for pricing various financial instruments and managing interest rate risk in portfolios.

Disadvantages of FAN

The Five Against Note Spread can be volatile and subject to short-term market reactions that may not reflect fundamental changes in economic conditions. This noise can make it challenging to distinguish between meaningful signals and temporary fluctuations. FAN focuses exclusively on the intermediate portion of the yield curve and may miss important dynamics at the short end (under 5 years) or the long end (over 10 years). Traders using FAN should complement it with other yield curve indicators for a complete picture. The spread's sensitivity to monetary policy can also be a disadvantage during periods of policy uncertainty, when frequent changes in expectations can create whipsaw movements that are difficult to trade profitably.

Real-World Example: FAN During Policy Pivot

During the Federal Reserve's policy pivot in late 2023, the Five Against Note Spread provided clear signals about changing monetary policy expectations.

15-year Treasury yield stands at 4.8% following rate hiking cycle
210-year Treasury yield holds at 4.2% as markets price in Fed pause
3FAN spread calculates as 4.8% - 4.2% = 0.6%
4Spread begins narrowing as Fed signals potential rate cuts
55-year yield drops to 4.3% while 10-year falls to 3.9%
6New FAN spread: 4.3% - 3.9% = 0.4%
7Traders use narrowing spread to anticipate further policy easing
Result: The declining FAN spread correctly signaled the Federal Reserve's shift from tightening to a pause-and-assess approach, providing valuable timing information for fixed income investors.

FAN vs Other Treasury Spreads

Comparing FAN with other Treasury yield spreads shows its unique focus on intermediate-term dynamics.

SpreadComponentsTime FocusPrimary Use
FAN5yr vs 10yr5-10 yearsMonetary policy
FAB5yr vs 30yr5-30 yearsLong-term expectations
2s5s2yr vs 5yr2-5 yearsNear-term policy
10s30s10yr vs 30yr10-30 yearsInflation outlook

Tips for Trading FAN

Pay close attention to Federal Reserve communications, including FOMC statements, press conferences, and economic projections. The FAN spread often reacts sharply to changes in Fed messaging. Use FAN in conjunction with other economic indicators and yield curve spreads for confirmation. A move in FAN should align with broader market signals to be considered reliable. Consider the seasonal patterns in Treasury markets, as certain times of year may influence the spread due to tax-related flows or institutional portfolio adjustments.

FAQs

FAN reflects market expectations about Federal Reserve actions over the intermediate term. A widening spread suggests expectations of tighter policy, while a narrowing spread indicates expectations of easier policy or economic concerns.

While both measure yield curve slope, FAN focuses specifically on the 5-10 year segment, making it more sensitive to intermediate-term policy expectations. The 2s10s spread covers a broader range and includes very short-term dynamics.

FAN typically ranges from -0.25% to +0.75% in normal conditions, though the range can vary with the overall level of interest rates. Negative FAN readings are less common but can occur during periods of significant economic uncertainty.

FAN can provide clues about market expectations for future Fed actions, but it should not be used alone to predict specific rate decisions. It works best as part of a broader analysis including Fed communications and economic data.

FAN can inform duration positioning and yield curve strategies. A widening FAN might suggest extending duration in intermediate maturities, while a narrowing FAN could signal the need to shorten duration or adjust curve positioning.

The Bottom Line

The Five Against Note Spread (FAN) is a valuable tool for understanding intermediate-term yield curve dynamics and monetary policy expectations in the Treasury market. Its focus on the 5-10 year segment makes it particularly sensitive to Federal Reserve actions and communications, providing earlier signals about policy shifts than longer-term spreads. While FAN provides important insights into market sentiment and economic expectations, it should be used as part of a comprehensive fixed income analysis strategy rather than in isolation. Understanding FAN can significantly enhance your ability to interpret and trade fixed income markets effectively, particularly when combined with other yield curve indicators, economic data releases, and Fed communication analysis.

At a Glance

Difficultyintermediate
Reading Time9 min

Key Takeaways

  • FAN measures the spread between 5-year and 10-year Treasury notes
  • It focuses on the intermediate segment of the yield curve
  • Changes in FAN reflect expectations about medium-term interest rates
  • A positive FAN indicates normal curve dynamics in the intermediate range