LP positions on Fira carry real risks. The projected 5–13% APR is a range based on modelled assumptions — it is not a guarantee, and your actual return depends on market conditions. Read this before depositing.
1. Return is not guaranteed
The displayed APR on any Fira market is indicative. It reflects current fee rates, implied fixed rates, and rehypothecation assumptions — all of which can change. Your actual return may be higher or lower than what was shown at entry.
There is no floor. In adverse conditions — low trading volume, low rehypothecation utilization, or an early exit during rate disruption — LP returns can underperform what the yield display suggested.
What to do: Treat the projected range as a scenario estimate, not a commitment. Model the low end (5% APR) before deciding whether the position fits your goals.
2. Impermanent loss from pool composition shifts
An LP position is not a static deposit. It is a dynamically rebalancing portfolio of BT (bond tokens) and FW (wrapped USDC). As implied rates in the market shift, the pool's BT/FW composition changes automatically.
If rates rise significantly after you enter:
The pool accumulates more BT at lower prices.
If you exit before maturity, you receive proportionally more BT and less FW than you put in.
Selling that BT on the AMM at current market price incurs slippage.
This is similar to impermanent loss on Curve, with one important difference: if you hold until maturity, BT converges to par and the unrealized loss disappears. The loss is only realized if you exit early during a rate disruption.
What to do: Size your maturity to match your investment horizon. If you can hold to maturity, duration risk is eliminated.
3. Liquidity risk — partial rehypothecation
About 10% of FW reserves are deployed into SisuVault at any time to generate rehypothecation yield. The remaining 90% stays liquid and immediately redeemable.
In normal conditions, this is invisible to you. But if you want to exit a very large position at the same time that variable-rate vault utilization is high, the protocol may need to rebalance before processing your full withdrawal. This can cause a short delay — not a loss, but a temporary restriction on access.
The protocol maintains tight reserve bounds (89.89%–91% idle) and rebalances automatically on deposits and redemptions. Variable-rate vault exposure is also capped ($5M per market in V1). These limits keep the risk small in practice.
What to do: For large positions, be aware that instant full redemption is not guaranteed in all conditions. If you need certainty of immediate access, this risk is worth weighting.
4. Smart contract risk
Fira is a recently deployed protocol. Even with multiple audits, smart contract bugs can exist and could lead to partial or total loss of deposited funds.
Fira has completed six independent security audits by four firms (Sherlock, Spearbit/Cantina, Hexens, yAudit — November 2025 to March 2026) and a month-long internal review. A bug bounty program of up to $500K is active via Sherlock covering all V1 contracts.
These measures reduce risk — they do not eliminate it.
What to do: DeFi participation always carries smart contract risk. Only deposit what you can afford to lose.
5. CT value risk
When you deposit, you receive CT tokens representing your claim on rehypothecation yield. If variable borrowing demand is low throughout the market's life, CT tokens will accrue little yield — and if you hold them to maturity expecting significant returns, you may be disappointed.
CT value depends on: how much USDC is rehypothecated, the borrowing rates in variable-rate vaults, and utilization levels. All three are uncertain at the time of deposit.
What to do: If you sell CT immediately at deposit, you lock in the present value of expected future yield at the current market price. This removes future CT uncertainty from your LP return, at the cost of not capturing upside if variable rates turn out higher than expected.
Summary
Risk | Severity | Mitigation |
Return variability | Medium | Model the low end before entering |
Impermanent loss (early exit) | Medium | Hold to maturity; choose maturity aligned with horizon |
Liquidity delay (large exit) | Low | Vault caps + reserve bounds limit exposure |
Smart contract vulnerability | Low–Medium | 6 audits + $500K bug bounty, but not zero |
CT underperformance | Low–Medium | Sell CT at deposit to remove uncertainty |
LP positions are not for passive capital that needs to move on short notice. They reward patience and reward participants who understand the mechanics. If that profile fits you, the risk/return tradeoff can be favourable.
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