Pendle (PENDLE)

What Pendle is

Pendle splits a yield-bearing asset into two tradeable pieces: the principal and the yield. Its documentation describes the protocol as "a permissionless yield-trading protocol where users can execute various yield-management strategies," operating as a derivative layer on top of assets such as liquid staking tokens and yield-bearing stablecoins (source: Pendle documentation, read September 2026). PENDLE is the protocol's token, staked as sPENDLE.

The reason to separate them is that they behave differently. Principal is a fixed claim maturing on a date. Yield is a variable stream. Bundled together in one token, neither can be priced or traded on its own terms.

How it works

The first step is standardization. A yield-bearing asset is wrapped into a Standardized Yield token, which the documentation defines as "a wrapped version of the underlying yield-bearing token that is compatible with the Pendle AMM." Staked ether becomes SY-stETH, and every wrapped asset then presents the same interface to the rest of the protocol.

The second step is the split. The SY token is separated into a Principal Token and a Yield Token. PT represents the principal amount, and YT represents the yield component, which the documentation describes as the yield being "tokenized into a separate token."

What follows from that split is the whole product. Holding PT alone is a fixed-rate position: you buy the principal at a discount and it converges to full value at maturity, which is the mechanics of a zero-coupon bond. Holding YT alone is leveraged exposure to the yield rate, because a small amount of capital buys the yield stream of a much larger principal.

Fees are documented precisely. On the yield side, "Pendle collects a 5% fee from all yield accrued (including points) by all YT in existence." Points from points program campaigns are treated the same as yield, which matters because many of the assets Pendle wraps pay both.

On the trading side, the swap fee scales with time. The documentation gives the formula as "Trading Fee = (Fee Tier / 365) * Days to Maturity," with the fee tier set per market by the pool deployer. A trade in a market maturing next week costs a fraction of the same trade in a market maturing next year, which is correct: there is less duration being transferred.

Fee distribution has two paths. Of swap fees, 20% goes to liquidity providers as yield. The remaining 80% is split "80% for PENDLE buyback," 10% to the protocol treasury and 10% to protocol operations. YT fees follow the same 80/10/10 split with no allocation to liquidity providers.

One detail catches people out. Unredeemed positions that have passed maturity keep accruing yield and points, and the documentation states those are "automatically redirected to the Pendle treasury fee wallet" rather than to the position holder. Maturity is a date you have to act on.

Supply and tokenomics

PENDLE's staking contract and fee routing are documented; its supply schedule is not published on the pages RampAtlas read.

The buyback is the token's main value accrual mechanism, and it is funded by usage rather than by issuance. Four fifths of protocol fees, after the liquidity provider share on swaps, go to buying PENDLE. The documentation does not state what happens to the bought tokens on the fee page RampAtlas read, so this page does not claim they are burned.

Staking is straightforward. PENDLE converts to sPENDLE at a 1:1 ratio on Ethereum, and sPENDLE carries voting power and pro-rata reward distributions to holders meeting active participation criteria. Exiting takes 14 days through the cooldown flow, or is immediate at a 5% fee.

History

Pendle's second version reorganized the protocol around the SY standard, which let any yield-bearing asset be wrapped once and then handled uniformly by the automated market maker, the router and the tokenization contracts.

The token model moved too. The documentation's contract reference describes sPENDLE as the staked version carrying voting power and rewards, replacing the earlier lock-based design with a cooldown-and-fee exit. A 14-day cooldown or a 5% instant fee is a shorter commitment than a multi-year lock, and it trades governance stickiness for liquidity.

The protocol has since extended past yield tokenization. Boros, described in the documentation as an interest rate swap exchange for trading funding rates with leverage on Arbitrum, applies the same idea to a different rate: instead of splitting an asset's staking yield, it makes the funding rate on perpetuals directly tradeable.

Two further mechanisms appear in the current documentation. Dynamic Incentives adjusts reward curves for YT and PT based on total value locked in protocol-funded campaigns. Discrete Yield handles markets whose underlying pays in scheduled lump sums rather than continuously, using time-weighted accrual with a payout-block cap.

Risks and what to watch

Yield token decay is the risk most often misunderstood. A YT holder owns a claim on yield until maturity and nothing afterward, so the token's value trends to zero as maturity approaches. That is the instrument working as designed, not a failure.

Rate risk applies to both sides. A fixed rate locked through PT is only attractive relative to what rates do afterward, and a YT position is a directional bet on the underlying yield staying high.

Underlying asset risk passes straight through. Pendle wraps other protocols' tokens, so a depeg, an exploit or a slashing event in the underlying asset reaches Pendle positions built on it.

Liquidity risk grows near maturity and in thin markets. The swap fee shrinks as maturity nears, but so, often, does depth, and exiting a large position can mean accepting significant slippage.

Providing liquidity carries impermanent loss in the form specific to this design, since PT and SY prices converge on a schedule rather than moving independently.

Smart contract risk spans the tokenization contracts, the market contracts, the router and the staking contract, all of which hold or route user assets.

Frequently asked questions

What are PT and YT?

Principal Token and Yield Token, the two halves a yield-bearing asset is split into. PT represents the principal and matures to full value on a date. YT represents the yield stream until that date.

What fees does Pendle charge?

A 5% fee on all yield accrued by yield tokens, including points, and a swap fee calculated as the market's fee tier divided by 365, multiplied by days to maturity.

Where do Pendle's fees go?

Twenty percent of swap fees go to liquidity providers. The remainder, and all yield fees, split 80% to PENDLE buybacks, 10% to the protocol treasury and 10% to protocol operations.

How do you unstake sPENDLE?

Either through a 14-day cooldown with no fee, or instantly for a 5% fee.

Where can you buy Pendle?

PENDLE is listed on many centralized venues and trades on decentralized exchanges. See where to buy Pendle for availability in your jurisdiction and Exchanges to compare fees.