What is Yield Maturity?
Yield maturity is the specified date when a yield-bearing position or instrument reaches its end point and becomes redeemable for the underlying asset. In the context of yield stripping and fixed-yield products, maturity is when principal tokens become redeemable 1:1 for the underlying asset and yield tokens expire worthless. Maturity dates create a term structure for DeFi yields, similar to bond maturities in traditional finance.
The concept of maturity brings time dimensionality to DeFi yield products. Rather than indefinite positions, maturity-dated instruments have defined lifecycles that enable term-based strategies, yield curve analysis, and predictable capital planning.
How it Works
When yield-bearing assets undergo yield stripping, both resulting tokens (principal and yield) are assigned the same maturity date. This date is fixed at the time of stripping and cannot be changed.
As maturity approaches, principal token prices converge toward 1:1 with the underlying asset. A PT trading at 0.97 with one year to maturity should trade around 0.99 with one month remaining, as the discount shrinks with less time for yields to accrue. At maturity, PTs are worth exactly 1 unit of the underlying.
Yield tokens follow the opposite pattern. They start with significant time value representing expected future yields, which decays as maturity approaches and more yield is distributed. At maturity, YTs expire with zero value, having fully distributed their yield stream.
Protocols typically offer multiple maturity dates for the same underlying asset, creating a term structure. You might find PT-stETH with maturities of 3 months, 6 months, and 1 year, each trading at different prices reflecting their respective implied yields.
Post-maturity, positions must be redeemed or rolled into new maturities. Most protocols allow redemption at any time after maturity without penalty. Rolling involves redeeming the matured position and entering a new position with a later maturity date.
Practical Example
You purchase 100 PT-stETH with a June 30th maturity at 0.98 stETH per PT in January. As the date approaches, you monitor the PT price rise from 0.98 to 0.995 by late June. On July 1st, after maturity, you redeem your 100 PTs for exactly 100 stETH, realizing your 2% fixed return over the 6-month period. You then decide to roll your position by purchasing new December maturity PTs to continue earning fixed yields.
Why it Matters
Yield maturity enables duration management and term structure strategies in DeFi. Investors can match asset maturities to liability timeframes, speculate on yield curve shapes, or ladder positions across multiple maturities for consistent income. Understanding maturity dynamics is essential for anyone using yield stripping products or fixed-yield strategies. Fensory displays maturity dates and time-to-maturity for yield products, helping you plan redemptions, rolls, and duration-matched investment strategies.