USD* Junior Staking

USD*-J (USD* Junior) is the junior tranche of Perena's USD*, a yield-bearing digital dollar on Solana. Perena calls it "the amplified tranche of USD*": a way to earn enhanced yield in exchange for defined first-loss exposure within the USD* capital stack.

• Same underlying yield: USD*-J earns from the same USD* portfolio as regular USD*, but receives a larger share of it.
• First-loss position: if the portfolio loses money, USD*-J absorbs the impact before senior holders are affected.
• Not leverage: Perena describes it as a deliberate choice to take on more risk and be paid for it, not borrowed exposure.

USD*-J is an SPL token with mint address 3AJYCjrhKitmBd8tRUurPA5dGHCAQh6A8L9DkuSC37Rm.

Perena splits USD* yield between senior and junior holders by weight: junior weight = junior TVL × leverage factor, senior weight = senior TVL × 1. Total yield is then divided proportionally to those weights.

• Dynamic leverage factor: the base multiplier is 2x, so junior holders earn roughly twice the senior APY.
• Self-balancing: when the junior share of TVL falls below its 25% target, the multiplier rises (up to about 3x at very low stake levels), which attracts new junior capital.

Yield accrues in the USD*-J price, so the APY is variable: more junior stakers mean a lower individual APY, fewer mean a higher one.

• 1. Open the app: go to app.perena.org/earn and connect a Solana wallet.
• 2. Deposit: deposit directly into the USD* Junior vault, or use the "Amplify" toggle on an existing USD* position and choose how much to allocate with the slider.
• 3. Redeem: a standard unstake goes through a cooldown period and a small fee. An instant unstake skips the cooldown for a 1% fee, which is redistributed to the remaining junior holders.

On exit you receive your share of the tranche's current value, not your original stake. If junior stake drops below 10% of TVL, the instant unstake fee rises to 10% to protect the system.

Perena rates USD*-J as a medium-risk position.

• First-loss exposure: losses in the USD* portfolio are applied to the junior tranche first, up to its share of total capital. In a severe scenario you could lose part or all of your USD*-J position.
• Variable returns: the APY depends on how much capital sits in the junior tranche and is not guaranteed.
• Underlying risks: USD*-J does not change the strategy, counterparty and smart contract risks of USD* itself.
• Exit costs: withdrawals carry a cooldown or an instant-unstake fee, higher than for regular USD*.