Pendle Finance

Pendle tokenizes yield-bearing assets into Principal Tokens (PT) and Yield Tokens (YT), creating an on-chain market for fixed-rate yield and yield speculation/hedging. Pendle V2's specialized AMM and vote-escrowed vePENDLE coordinate liquidity across dozens of maturity-dated yield markets, and Boros extends the model to funding-rate trading. Pendle splits any yield bearing token into a Principal Token (PT) and a Yield Token (YT) with a fixed maturity, so the fixed and floating legs of an onchain yield can be priced and traded separately (Pendle docs, Introduction). A yield bearing asset is first wrapped into a Standardised Yield (SY) token, then SY is stripped into PT plus YT, and holding both is economically identical to holding the underlying (Pendle Academy, yield tokenisation basics). PT is described by Pendle itself as "essentially a zero-coupon bond on the underlying asset" that redeems 1:1 at maturity, while the PT holder forgoes the variable yield and points (Pendle docs, PT). YT streams the yield until expiry and then decays to zero, which gives leveraged exposure to a yield or points stream (Pendle docs, YT). Boros, launched in 2025, extends the same idea to perpetual funding rates, where a position "= user has to pay an interest stream and receive another interest stream until a maturity" (Boros Litepaper).

The dominant yield-tokenization market: PT buyers lock a fixed rate, YT buyers go long yield, a true fixed-income primitive for DeFi, with the deepest liquidity and asset coverage in the category.

- Yield Tokenization (SY / PT / YT): A yield-bearing asset is wrapped into Standardized Yield (SY, ERC-5115) then split into a Principal Token (PT) and a Yield Token (YT) that trade and redeem independently until maturity. - Pendle AMM: A specialized AMM that trades PT and YT from a single pool, with time-decaying concentrated liquidity tuned to a market's maturity date. - vePENDLE: Vote-escrowed PENDLE (lock up to 2 years): directs incentive emissions across pools, boosts LP rewards, and earns a share of protocol swap fees and YT yield. - Boros: Funding-rate yield trading with margin via Yield Units (YU); lets users hedge or speculate on perpetual funding rates. Launched Aug 2025 on Arbitrum.

- PENDLE (PENDLE): Token, Governance & utility token - PT-stETH, PT-eETH, etc. (PT-stETH): Receipt, Fixed-yield principal - YT-stETH, YT-eETH, etc. (YT-stETH): Receipt, Tradable future yield

- Smart Contract: SY wrappers, PT/YT tokenization, redemption/maturity logic and the Pendle AMM are complex contracts; a bug could impair redemptions or LP funds. - Counterparty: Every market inherits its underlying yield source: a depeg, exploit or yield collapse of assets like Ethena sUSDe, Lido stETH or Ether.fi weETH directly hits PT/YT holders. - Oracle: PT/YT valuation and liquidations on integrating protocols rely on oracles/TWAPs; stale or manipulated pricing near maturity can misvalue positions. - Systemic: TVL is highly concentrated in Ethena USDe/sUSDe markets (~70%); an Ethena-specific shock would disproportionately impact Pendle. Markets are also time-bound: liquidity thins and YT decays toward maturity. - Governance: vePENDLE holders direct incentive emissions and key parameters; concentration of locked PENDLE could steer rewards or governance outcomes. - Regulatory: Fixed-yield and yield-trading products may face evolving regulatory treatment; Pendle is not a regulated financial product.

- Instrument shape: similar in that PT is "essentially a zero-coupon bond on the underlying asset", redeemable 1:1 at maturity; YT collects the yield stream and decays to zero at expiry; differs in that Zero-coupon bond (principal strip) and interest-only strip from a STRIPS-style separation of a coupon bond - Underwriting: similar in that None. Any SY-wrappable yield bearing asset can have a market created permissionlessly, with a curated subset surfaced in the UI; differs in that No credit underwriting at all, closer to a dealer stripping a government bond than to a loan book - Collateral: similar in that The underlying yield bearing asset backs PT plus YT one for one; PT itself is then re-used as collateral on Morpho, Silo and Euler; differs in that Repo and collateralised lending against strips - Rate setting: similar in that Market determined. PT trades at a discount and the implied fixed rate is the discount to par over the remaining term; Boros uses an orderbook with a Mark Rate computed as a TWAP-style oracle; differs in that Bond price to yield conversion; swap curve set by dealer quotes - Settlement: similar in that PT redeems 1:1 for the underlying at maturity; Boros yield units settle against a funding rate fed by an external oracle, for example the "Binance ETHUSDT Funding Rate, 27 Dec 2024 Maturity" market; differs in that Bond redemption at par; swap cash settlement against a published floating benchmark - Swap leg mechanics: similar in that Boros positions are explicitly pay-fixed or receive-floating, with initial and maintenance margin and a maintenance margin that "starts at 50% of the initial margin"; differs in that Vanilla interest rate swap with CCP-style initial and variation margin - Recourse on default: similar in that No borrower to default. Loss comes from the underlying asset or from Boros margin liquidation, not from a counterparty credit event; differs in that Unlike a corporate bond there is no issuer recourse; risk is asset and margin risk - Regulation: similar in that Operated by a Panama entity with arbitration at SIAC, no securities registration or accredited investor gate disclosed; differs in that Strips and swaps are regulated instruments traded by registered dealers