Add ysyBOLD Market to FiRM

Proposal to Add ysyBOLD Market to FiRM

Summary

This proposal seeks to onboard ysyBOLD, the yield-bearing version of Yearn’s yBOLD product, as collateral on FiRM.

The market presents a business opportunity for Inverse: users can leverage ysyBOLD when its net yield exceeds their all-in FiRM borrowing cost, while Inverse earns revenue from the Yearn partnership as the market grows. The Liquity team has stated that it will allocate 5,000 USDC over two months to borrower incentives, enabled by Merkl’s onboarding of FiRM, which could further improve borrower economics.

Background

BOLD is the stablecoin of Liquity V2. It is fully on-chain, overcollateralized exclusively by WETH, wstETH and rETH, directly redeemable for its underlying collateral, and Liquity V2’s core contracts are immutable and non-upgradeable.

BOLD deposited into Liquity Stability Pools earns 75% of the interest paid by borrowers in the corresponding market, as well as gains from liquidations. When a liquidation occurs, Stability Pool BOLD is used to repay the liquidated debt and depositors receive the collateral at a discount. This creates a sustainable source of yield driven primarily by actual borrowing activity rather than token emissions.

Yearn’s yBOLD product automates this process by allocating BOLD between Liquity’s WETH, wstETH, and rETH Stability Pools and managing the liquidation collateral received by the strategies. yBOLD itself is designed to remain at 1 BOLD per share, with generated profits instead passed to ysyBOLD, which accrues the yield.

Latest yBOLD figures from Stable Yields:

  • 5.84% 30-day APY
  • 7.37% 90-day APY
  • 12.06% current APY
  • ~$6.7m TVL

BOLD itself currently has approximately 36.55m BOLD in total token supply.

Figures checked on Sep 29, 2026. APYs are annualized returns over different lookback periods and exclude the planned Liquity borrower incentives.

Business Case

1. Strong expected borrow demand

Users can deposit ysyBOLD, borrow DOLA and use ALE to increase their exposure when its net yield exceeds their all-in borrowing cost.

Stable Yields reports a current APY of 12.06%. Borrower economics depend on the yield achieved relative to the DBR price paid to fund the loan, plus swap costs and any dilution of yield as deposits grow. Historical returns do not guarantee a positive borrowing spread.

The underlying source of yBOLD yield is Liquity borrowing revenue and liquidation gains. As long as there is meaningful BOLD debt and Stability Pool utilization, there is a structural source of yield for the strategy. The planned Liquity borrower incentives would supplement this yield; demand should also be assessed without them and after the two-month campaign ends.

2. Particularly attractive economics for Inverse

Under our partnership agreement with Yearn, Yearn takes a 10% fee on generated yield, with 50% of that fee shared with Inverse for partnership-attributable deposits.

Inverse therefore effectively receives 5% of the gross yield generated by partnered deposits.

A successful ysyBOLD market consequently creates two revenue streams for Inverse:

  • Increased FiRM borrowing and DBR demand.
  • A direct share of the fees generated from the growing ysyBOLD position.

Leveraged positions amplify both. As users loop ysyBOLD, they increase both the amount of DOLA borrowed from FiRM and the amount of capital generating fees through Yearn.

3. High-quality underlying stablecoin

The stablecoin has no RWA, centralized stablecoin or custodian exposure. Its collateral is restricted to WETH, wstETH and rETH, and the core Liquity V2 protocol cannot be upgraded or have new collateral types introduced through governance. BOLD can also be directly redeemed against the underlying collateral through Liquity’s native redemption mechanism.

This gives BOLD a fundamentally different risk profile from many of the stablecoins currently used throughout DeFi and provides FiRM with additional collateral diversification.

4. Strategic alignment with Yearn

This market strengthens the existing Yearn partnership by positioning FiRM as a leveraged venue for ysyBOLD, giving both protocols an incentive to grow the integration.

5. Liquity borrowing incentives via Merkl

Merkl has onboarded FiRM, enabling borrowing incentives to be distributed to eligible FiRM borrowers. The Liquity team has stated that it will allocate a total of 5,000 USDC over two months to borrower incentives for the proposed ysyBOLD market through this integration. This support could reduce borrowers’ effective costs and encourage market adoption.

Incentive returns depend on eligible borrowing during the campaign and are additional to the underlying Yearn yields quoted above.

Risk Considerations

The primary additional risk relative to holding BOLD directly comes from the yBOLD strategy layer.

When Liquity Stability Pool deposits participate in a liquidation, BOLD is exchanged for WETH, wstETH or rETH collateral. Yearn subsequently auctions that collateral back into BOLD. If the collateral falls sufficiently in value before it can be converted, the strategy can realize a loss.

In this scenario, yBOLD can fall below its targeted 1:1 exchange rate with BOLD. Yearn’s Accountant is designed so that future profits are first used to restore yBOLD back towards 1 BOLD before further profits are distributed to ysyBOLD.

Yearn has also developed an OnLossDepositLimit mechanism designed to prevent new yBOLD deposits while its price per share is below 1, preventing new depositors from entering at a discount and capturing the subsequent recovery.

Other risks include the Yearn smart contracts, keeper and auction infrastructure, Liquity V2 itself, and the liquidity available to exit BOLD during stressed market conditions.

Full RWG risk assessment from the perspective of adding as collateral to FiRM is pending.

Parameters

TBC

The Risk Working Group has published its full collateral risk assessment for yvyBOLD, Yearn’s staked yBOLD vault share built over Liquity V2’s BOLD stablecoin. The assessment follows the pre-screening published in September and is available in full on GitHub:

FiRM Collateral Risk Assessment: yvyBOLD

We recommend the following launch parameters:

Parameter Recommendation
Collateral Factor 85%
Liquidation Factor 100%
Liquidation Incentive 5%
Supply Ceiling 2,000,000 DOLA
Daily Borrow Limit 500,000 DOLA
Minimum Debt 3,000 DOLA
Staleness Threshold 86,500 seconds

yvyBOLD is a layered asset, and the assessment is organized the same way. Beneath the vault share sits a Yearn V3 vault, beneath that Liquity V2’s Stability Pools, and beneath those the BOLD stablecoin and the collateral that backs it. The document works through each layer in turn: how value and price move through the stack, where the exit liquidity actually sits, how the FiRM price feed is assembled and where it stops tracking the market, who holds which keys and on what delay, and how a loss at the base propagates up to the share FiRM would hold. Four on-chain studies were run for it (a year of history on the feed’s source pool, a depth simulation of that pool, a full-life history of what the vault could redeem, and a census of every other BOLD venue), and several contract-level claims were verified from deployed source rather than documentation.

Two points of context are worth stating up front. This is the first Yearn V3 vault the RWG has assessed for FiRM. FiRM already holds Yearn V2 collateral administered by the same Safes, and V3 carries a set of controls that V2 does not, so a good part of the assessment is given to naming those controls so that each one can be monitored.

The second is how the market will be rolled out. As with recent listings, the supply ceiling and the daily borrow limit are being staged rather than set once: the market launches at the parameters in the assessment, and increases are proposed against observed readings at scheduled reviews while the asset is integrated into our business-as-usual monitoring and alerting. This approach has served us well on prior onboardings, and it means the case for growth is made on evidence from a live market rather than on projection. The first scheduled review is October 22, roughly thirty days from the assessment date, and any proposed increase will be posted here with the readings it rests on.

Questions and challenges on any part of the assessment are welcome in this thread.