Crypto Gloss

Hyperdrive

Hyperdrive is a yield tokenization and AMM protocol developed by Delv (formerly Element Finance) that enables longs and shorts on variable yield rates with fixed-term positions — where users can take fixed-rate long positions (PT — Principal Tokens) or levered yield-long positions (YT — Yield Tokens) against yield-bearing assets like stETH, eETH, sDAI, and ERC-4626 vaults, with a novel AMM that natively prices both PT and YT in a single unified curve.

Overview

Hyperdrive is the successor to Element Finance — after Element Finance’s original PT/YT protocol was discontinued in 2022, the Delv team spent 2022–2023 researching and building Hyperdrive as a next-generation yield market AMM. The core advance over Element Finance and Pendle: Hyperdrive’s AMM prices both Principal Tokens and Yield Tokens in a single curve (no separate pool per token type), reducing liquidity fragmentation. Hyperdrive launched on Ethereum mainnet and Base in 2024, targeting sophisticated DeFi users who want fixed-rate exposure or leveraged yield speculation on the Ethereum staking rate and other variable yield sources.

Background: Element Finance → Hyperdrive

Element Finance (2021–2022) pioneered PT/YT yield tokenization:

  • Deposit yield-bearing asset → receive PT (Principal Token) + YT (Yield Token)
  • PT: redeemable for full principal at maturity → functionally a fixed-rate bond
  • YT: claim all yield earned by the principal during maturity period → speculation on yield rate

Element was discontinued after insufficient adoption. Delv (the team) pivoted to Hyperdrive with significant architectural improvements:

  • Unified curve for PT and YT (vs separate pools in Element/Pendle)
  • Continuous rolling positions without fixed tranche dates
  • More capital efficient LP

Core Mechanics

The following sections cover this in detail.

PT (Principal Token) — Fixed Rate Long

  • Deposit stETH, sDAI, eETH, or other yield-bearing asset into Hyperdrive
  • Receive: PT — redeemable for full principal at maturity (e.g., 1 stETH at maturity per PT)
  • If PT price < 1 stETH today (discounted) → implied fixed yield equals the discount
  • User effectively locks in a fixed rate regardless of how variable staking yield changes

Example: 1 stETH → buy PT worth 0.96 stETH today → at maturity receive 1 stETH = 4.17% annualized fixed rate on a 1-year position

YT (Yield Token) — Levered Yield Long

  • YT represents the right to claim all yield earned by the underlying capital during the maturity term
  • YT is cheap (priced at implied future yield) → provides leveraged exposure to yield rates
  • If stETH yield goes UP → YT holders gain outsized PnL (yield claims on large principal for small cost)
  • If stETH yield goes DOWN → YT expires nearly worthless

Use case: Bet on yield rates rising (e.g., bullish on ETH staking APR) → buy YT for leveraged exposure

LP in Hyperdrive

  • LPs provide liquidity to the unified PT/YT curve
  • Earn fees when traders swap PT or YT
  • LP is exposed to PT/YT price risks (interest rate risk) — not a stablecoin LP
  • LP positions are ERC-4626-compatible

Hyperdrive AMM: The Unified Curve

The key technical innovation:

  • Single pool per yield source — trades of both PT and YT share the same liquidity
  • Based on YieldSpace AMM math (from Yield Protocol, originally for Element) + extensions for YT
  • Automatically handles time-value decay of PT as maturity approaches
  • No impermanent loss from IL in the traditional sense — but interest rate risk exposure for LPs

Supported Yield Sources

Hyperdrive launched with ERC-4626-compatible vaults:

  • stETH (Lido) — Ethereum staking yield
  • eETH (ether.fi) — LRT staking yield
  • sDAI (MakerDAO/Spark) — DAI savings rate (DSR) yield
  • additional ERC-4626 vaults via permissionless integration

Any standard ERC-4626 yield vault can be added to Hyperdrive without code changes.

Sources

Related Terms