What Is an On-Chain Fixed-Yield Product? Understanding Rewards, Maturity, and Risk with Pendle PT

/Updated Aug 1, 2026

Key Takeaways

The potential fixed yield of PT mainly comes from the discount between the purchase price and the redemption value at maturity, but the actual result depends on holding to maturity, the underlying asset, and protocol operations.
Before purchasing, simultaneously verify the underlying asset, maturity date, pricing unit, early exit liquidity, fees, and signing permissions; do not only look at the annualized number on the page.
Fixed yield does not equal principal protection; de-pegging, smart contracts, market liquidity, network operations, and fiat pricing changes can all cause losses.

First, Understand: What Does On-Chain "Fixed Yield" Actually Fix

In traditional finance, "fixed yield" usually refers to earning interest or principal returns under agreed terms. On-chain, the term is more easily misunderstood: most products do not promise unconditional principal protection, nor do they guarantee that the final yield rate will remain unchanged. More precisely, on-chain fixed-yield products typically take an asset that generates returns, or a set of future cash flows, split and price them, then allow users to lock in or trade a portion within a specific period.

Pendle PT (Principal Token) is a typical example for understanding this concept. It splits the future value of a "yield-generating asset" into two rights: PT is closer to the principal portion that can be redeemed at maturity, while YT (Yield Token) represents the right to receive the underlying yields and related rewards before maturity. Buying PT is not buying a deposit with an arbitrarily set APY from the platform; it is buying a principal right with a maturity date at a discount in the market.

Therefore, the potential return of PT mainly comes from two variables: the difference between the purchase price and the redemption value at maturity, and any other rights that may be gained or forgone during the holding period. If held to maturity and the underlying asset and protocol operate normally, the discount portion can be converted into an implied yield; if sold early, the actual result depends on the market price and liquidity at that time.

Where Do Rewards Come From: First Identify the Underlying Asset

To determine whether an on-chain fixed-yield product is suitable, the first step is not to look at the APY displayed on the page, but to ask "who pays the yield and with what asset." In the Pendle PT scenario, the underlying is usually a yield-generating asset with a term (for example, a tokenized asset that can generate on-chain yields). The specific asset, network, maturity date, and redemption rules must be based on the official page and protocol documentation of the corresponding market.

The sources of yield can be broken down into several layers:

The yield of the underlying asset itself, such as lending interest, staking rewards, or other cash flows generated by the protocol.
Price differences formed by market trading. When the trading price of PT is lower than its redeemable value at maturity, the discount may constitute the source of return for holding to maturity.
Additional incentives or points. Some markets may have liquidity incentives, but the tokens, quantities, claiming conditions, and duration of such rewards may change and should not be treated as stable interest.
Exchange rate or de-pegging changes. If the underlying asset is not the pricing asset the user is familiar with, the final return will also be affected by price changes between it and the target asset.

It is important to distinguish between "fixed rate" and "fixed quantity." The implied yield of PT can be estimated at the time of purchase based on price and remaining term, but it is not a permanently fixed number for all buyers. Market prices will change, and new buyers may receive different implied yields; when exiting early, the selling price may also be lower than expected.

A simplified example: suppose a certain PT can be redeemed for 1 unit of the underlying asset at maturity, the current price is 0.96 pricing units, and there are 180 days until maturity. Ignoring fees, slippage, exchange rates, and protocol risks, the simple return of holding to maturity is approximately 4.17%; the annualized conversion must be calculated according to the actual interest calculation method. This number is only an estimate based on price and term, not a yield commitment, and does not cover underlying asset price volatility and exit liquidity risks.

Term and Maturity: PT Is Not Redeemable at Any Time at Par

"Maturity" is one of the most important differences between PT and ordinary demand yield products. Before purchasing, at least confirm:

Which time zone the maturity date uses, how it is recorded on-chain, and how much time remains until then.
After maturity, whether PT can be directly exchanged for the underlying asset, whether manual operation is required, and how the exchange ratio and fees are calculated.
Whether it can be sold on the secondary market before maturity; if so, whether current liquidity, bid-ask spread, and price depth are sufficient.
After maturity, whether the redemption, withdrawal, or cross-chain process of the underlying asset is still subject to other protocol rules.

Maturity does not mean all risks automatically disappear. It usually only indicates that the term conditions of PT have been met; whether smooth redemption can occur still depends on the underlying asset, smart contracts, market mechanisms, and the actual redemption process executed by the user. If the user sells before maturity, they receive the price the market is willing to pay at that time, not the maturity value displayed on the page.

The term also affects yield sensitivity: the shorter the remaining term, the same price discount may correspond to a higher annualized implied yield; however, this does not mean lower risk. Short-term markets may be thinner, and price volatility and slippage may be more pronounced. Do not only compare the APY of two markets; also compare maturity dates, pricing assets, underlying asset quality, and exit methods.

Practical Checklist Before Purchasing

Before connecting a wallet and signing, it is recommended to check item by item:

Check the asset name clearly. Confirm that you are buying PT, not YT, LP, or other derivative positions; verify the network, contract address, and token precision to avoid same-named assets or counterfeit tokens.
Confirm the maturity date. Convert the maturity date into a time you can understand and assess whether the funds can be unused during the term.
Understand the pricing unit. Clarify whether the price is denominated in the underlying asset, stablecoin, or other tokens; do not mistake "positive return denominated in a certain asset" for a certain increase in fiat value.
Check the redemption path. Read the official Pendle documentation to confirm the purchase, trading, maturity redemption, and possible authorization steps for PT; first verify the process with a small transaction.
Estimate real costs. Include network fees, protocol fees, trading fees, slippage, authorization costs, and the spread of early exit in the calculation.
Check liquidity. View the depth of the order book or pool, quote impact, and historical trading situation; the theoretical yield displayed does not mean it can be traded at that price.
Verify permissions and signatures. Only sign authorizations and transactions you understand; confirm that the transaction amount, receiving token, contract, and network match expectations.
Prepare for the worst-case scenario. Set in advance an acceptable loss, exit conditions, and position limit; do not put emergency funds or funds that must be used in the short term into term positions.

If using related on-chain functions through OneKey, the actual support scope, networks, and risk prompts currently displayed on the OneKey product page shall prevail. The information boundary of this article only confirms that OneKey currently supports the topic and does not infer that a specific Pendle market, underlying asset, Provider, Vault, address, or fixed entry has been supported by OneKey. Specific support conditions, interface fields, and available networks may change; the query date for changed information is 2026-07-31. Please refer to the OneKey product page or official documentation.

Key Risks to Understand

Underlying asset risk. The redemption value of PT depends on the underlying asset and its yield mechanism. The underlying asset may de-peg, depreciate, suspend redemption, or be affected by the issuer, custodian, and related protocols.

Smart contract risk. Pendle, the underlying yield protocol, token contracts, and related routers may have code defects, oracle issues, permission configurations, or upgrade risks. Audit reports can only reduce information asymmetry and cannot eliminate the possibility of vulnerabilities.

Market and liquidity risk. Early exit requires trading at the market price. Market volatility, insufficient liquidity, pool imbalance, or extreme market conditions may cause the selling price to be significantly lower than the maturity valuation.

Yield change risk. Additional incentives, underlying yields, points rules, and market prices will change. The annualized figure displayed on the current page may only be an estimate at a certain point in time and does not represent actual future returns.

Network and operational risk. Choosing the wrong network, mistakenly signing authorizations, losing private keys, encountering phishing sites, or paying excessively high network fees may cause irreversible losses. On-chain transactions are usually irreversible; be sure to enter the product page through official channels and verify the domain.

Pricing and tax risk. Yields calculated in token quantities are not equal to yields calculated in RMB or other fiat currencies; rules for token trading, yields, and reporting may also differ in different regions. Professional advice should be sought when necessary.

The core of on-chain fixed-yield products is not to find a number that looks stable, but to clarify item by item "who provides the yield, when it is redeemed, in what asset it is denominated, whether early exit is possible, and what is the worst that can happen." If you cannot explain the underlying asset and maturity process of PT, you should not make decisions based solely on the annualized display.

Risk Disclosure

This article is for general information sharing and product mechanism education only and does not constitute investment, legal, tax, or other professional advice. Digital assets and on-chain protocols carry high risks, and partial or total loss of principal may occur. Yields, liquidity, rewards, supported networks, and product interfaces may all change. Please make prudent decisions based on your own circumstances after fully understanding assets, terms, fees, smart contracts, and operational risks, and refer to the latest information on the OneKey product page and relevant protocol official documentation.

References

FAQ's

PT stands for Principal Token. It represents rights to the principal portion of a yield-generating asset with a term and can usually be exchanged for the underlying asset at maturity according to protocol rules. It is different from YT and is not equivalent to a bank deposit or principal-protected product.

If PT is currently trading at a price lower than its redemption value at maturity, the price discount may convert into a return denominated in the underlying asset when held to maturity. The actual annualized return depends on the purchase price, remaining term, fees, slippage, and redemption conditions at maturity.

Exit usually requires secondary market trading in the corresponding market, but whether a trade can be executed and at what price depends on the liquidity and market quotes at the time. Selling early may result in partial or total loss of expected returns and cannot be exited directly at the maturity value.

Main risks include de-pegging or depreciation of the underlying asset, smart contract vulnerabilities, insufficient market liquidity, changes in additional rewards, network and authorization operation errors, and the possibility that yields denominated in tokens may decrease when converted to fiat currency.

This cannot be inferred. This article does not add or confirm support for specific Pendle markets, underlying assets, Providers, Vaults, addresses, or product entries. When using related functions, please refer to the support scope, networks, and official documentation currently displayed on the OneKey product page; the query date for changed information is 2026-07-31.