0xResearch
August 18, 2025

Pendle and Boros: Shaping the Future of Yield Trading | TN, Pendle

In this episode, Pendle co-founder TN joins the 0xResearch team to unpack the explosive launch of Boros, a new protocol for trading yield with margin, and explore the powerful DeFi synergies fueling Pendle V2's massive growth.

Boros: Launching with a Bang

  • "We allocated a $20 million open interest cap for Boros expecting it might take one week to fill, but after one day, we more or less got up to speed and had to raise the cap fairly shortly after."
  • "Five days in, we've seen north of $27 million of open interest... I believe it has already passed $19 million in notional volume."
  • Boros, Pendle’s new margin-based yield trading protocol, smashed expectations by filling its initial $20 million open interest (OI) cap in just one day, a milestone the team had projected would take a week.
  • Within five days, the protocol handled over $27 million in OI and $19 million in notional volume, all while operating on conservative leverage starting at 1.2x and moving to 1.4x.
  • This initial success was built on a deliberate, multi-month strategy of onboarding key market makers and sophisticated users through a phased beta program, ensuring foundational liquidity and user familiarity from day one.

The Roadmap for Scaling Boros

  • "Over time, as we get comfortable with the product, there shouldn't be a cap... I would like to see the platform supporting maybe 20x to 50x kind of leverage for rate trading."
  • "The ultimate aim here is to allow for rates of the same kind of underlying across the board to be arbed and eventually, they should converge."
  • The immediate focus is on ensuring the protocol’s risk management system is robust before aggressively scaling. The team is slowly increasing leverage with a long-term goal of offering 20x to 50x, a core component of Boros's capital efficiency thesis.
  • Growth will prioritize adding more markets from Binance, then expanding to other exchanges like Bybit and OKX. This strategy is designed to create a unified market where arbitrageurs can compress funding rate differentials across the ecosystem.
  • Longer-term, Boros is architected to support any rate published by an oracle, opening the door to non-crypto markets like LIBOR or Fed funds rates, as well as on-chain PoS staking and borrowing rates.

The Pendle V2, Ethena, and Aave Trifecta

  • "PT sUSDe... became the market that got $1 billion in TVL in the shortest time, to my knowledge. That's about one week."
  • Pendle V2’s recent growth has been supercharged by a powerful synergy with Ethena and Aave. Listing Ethena’s PT sUSDe on Aave as collateral created a capital-efficient looping strategy that drove $1 billion in TVL to the Aave market in its first week.
  • This integration has significantly improved the "stickiness" of Pendle's TVL. Following a massive multi-billion dollar maturity event, the protocol saw only ~$200 million in net outflows before reaching a new all-time high, partly thanks to the Aave integration.
  • Boros complements this ecosystem perfectly by providing a new tool for players like Ethena to hedge funding rate exposure, which could lead to more stable and attractive yields for their sUSDe product.

Key Takeaways:

  • The core thesis driving Pendle’s product suite is capital efficiency, first with yield tokenization in V2 and now with leveraged rate trading in Boros. The project's strategy pairs meticulous, safety-first product rollouts with deep, synergistic integrations across DeFi’s leading protocols.
  • Safety First, Then Scale Aggressively: Boros is intentionally sandboxing its launch with low leverage and OI caps to battle-test its risk systems. Once proven, the goal is to scale leverage to 20-50x and remove caps to capture the massive funding rates market.
  • DeFi's New Power Trio: The symbiotic relationship between Pendle (yield tokenization), Ethena (yield source), and Aave (leverage/collateral) has created a potent, capital-efficient flywheel, making Pendle's TVL more durable than ever.
  • The End Game is Rate Convergence: Boros aims to become the central venue for rate trading, expanding across exchanges and assets to enable arbitrage that will ultimately compress and standardize funding rates across the crypto ecosystem.

For further insights and detailed discussions, watch the full podcast: Link

This episode reveals Pendle's two-pronged strategy for dominating yield markets: scaling its V2 protocol through deep DeFi integrations while cautiously launching Boros to capture the multi-billion dollar funding rates market with a capital-efficient, margin-based model.

Introduction to Pendle’s Dual-Product Ecosystem

  • Pendle V2: The core product that enables the tokenization and trading of yield, popularizing yield and points trading through partnerships with protocols like Ethena and EigenLayer.
  • Boros: A new protocol for trading yield with margin. Its first use case targets the funding rates for BTC and ETH markets on Binance. Funding Rates are periodic payments exchanged between traders in perpetual futures markets to keep the contract price aligned with the underlying asset's spot price.

The Boros Launch: Exceeding Initial Expectations

  • The initial open interest cap of $20 million ($10 million for each of the BTC and ETH markets) was filled in just one day, far quicker than the projected one-week timeline.
  • Within five days, open interest grew to over $27 million, with notional trading volume surpassing $19 million.
  • Leverage started at a conservative 1.2x and was quickly raised to 1.4x, with TN expressing a long-term vision for much higher leverage (20-50x) once the system is proven.
  • TN emphasizes a safety-first approach: “We are not too focused on growth; we are making sure that the product is safe and sound first and foremost before we want to scale up.”

Risk Management and Scaling Strategy

  • Strategic Consideration: The team is stress-testing the system against extreme volatility, such as a 10x move in implied rates (e.g., from 7% to 70%), to prevent bad debt scenarios.
  • Scaling will be methodical, based on observing the system's resilience during volatile market events rather than hitting predefined KPIs.
  • Future market additions (e.g., new assets, exchanges) will depend on the liquidity and reliability of the underlying oracle feeds to mitigate manipulation risks.

Onboarding Market Makers and Early Users

  • Institutional Onboarding: The process involved pitching the concept to major market makers like Wintermute and GSR, eventually securing Kaledan as a day-one liquidity partner after months of collaboration and stress testing.
  • Community Onboarding: A phased beta access program began in April, starting with the internal team, then expanding to active Pendle community members, and finally to KOLs and friendly funds. This ensured a base of educated users was ready at launch.

Boros as a Hedging Tool for Ethena and Beyond

  • Actionable Insight: Protocols like Ethena can use Boros to short funding rates, effectively locking in a predictable yield and making their offerings (like USDe's APY) more resilient to market fluctuations.
  • This could solve a key pain point observed during low-activity periods (e.g., May-June) when Ethena's yield dropped significantly.
  • The team also discussed potential future integrations where users on platforms like Hyperliquid could directly hedge their funding rate exposure through a Boros-powered front-end.

Technical Architecture and Future Integrations

  • Boros is deployed on Arbitrum but can support rates from any source, including other chains like Hyperliquid's EVM or even off-chain traditional finance rates.
  • TN confirms that Boros could theoretically support markets for variable borrowing/lending rates from protocols like Aave, provided there is sufficient demand and a reliable oracle.
  • Future Vision: The roadmap includes expanding to non-crypto rates, such as LIBOR, positioning Boros as a universal rate trading engine.

Passive Liquidity Vaults and Monetization

  • The vaults function similarly to a Uniswap V2 pool, providing liquidity across a wide price range to ensure trades can always be executed, albeit with potential for impermanent loss.
  • Revenue Streams:
    1. Swap Fees: A 5 basis point (0.05%) fee for takers (makers pay 0%).
    2. Settlement Fees: A 0.2% fee charged on the notional open interest for both long and short positions at settlement.

Pendle V2: The Ethena-Aave Flywheel

  • The listing of Ethena's Principal Token (PT-USDe) on Aave was a major breakthrough, making it the fastest market on Aave to reach $1 billion in TVL (in approximately one week).
  • This integration created a powerful incentive loop, driving demand for PTs and significantly improving the "stickiness" of Pendle's TVL.
  • Following a major maturity event on July 31st, the protocol saw only ~$200 million in outflows from a multi-billion dollar pool before hitting a new all-time high in liquidity, demonstrating the effectiveness of this strategy.

Future Roadmap and Tokenomics

  • Pendle V2 Roadmap: Focus on institutional instances (part of the "Citadel" initiative) and cross-chain PT bridging to expand utility.
  • Boros Roadmap: The immediate priority is ensuring security and finding product-market fit. Future expansion includes supporting more exchanges, staking yields (e.g., ETH, SOL), and borrowing rates from money markets.
  • When asked about Pendle's VE tokenomics, TN candidly states, “The short answer is maybe not,” suggesting a simpler model might be preferable if redesigned today, but confirming any changes are a lower priority than current product development.

Conclusion

This episode highlights Pendle's strategic expansion from a single-product protocol to a dual-pronged yield powerhouse. Investors should monitor Boros's risk management milestones—like leverage increases—as key indicators of product maturity, while tracking V2's continued integration into major DeFi money markets as a primary driver of sustainable growth.

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