Onchain Tranching Targets DeFi's Next Growth Vector

Silvio Busonero, advisory lead at Blockworks, published an analysis on July 7 arguing that onchain tranching represents one of the most promising growth vectors in decentralized finance. The mechanism accounts for less than 1% of total DeFi lending deposits today. Busonero draws a direct line to the $15 trillion structured finance market in traditional finance, where tranching is the standard tool for slicing risk.

The mechanics are straightforward. A lending pool is split into tranches with different risk profiles. Junior tranche depositors absorb losses first, acting as a cushion for senior tranche depositors higher in the repayment waterfall. Junior participants earn higher yields in exchange for that first-loss risk. Senior participants get lower but more stable returns with built-in protection. Cooldown periods prevent bank-run dynamics. Dynamic coverage pricing adjusts the cost of protection based on market conditions.

Busonero contrasts this with looping, the recursive borrowing strategy that drives roughly 40% of DeFi lending revenues. A user deposits collateral, borrows against it, redeposits the borrowed assets as new collateral, borrows again, and repeats. Looping generates significant protocol fees but relies on liquidation waterfalls to manage risk after the fact. Tranching structures risk allocation upfront. Busonero contends that in various scenarios, tranching delivers superior risk-transfer capabilities. The two approaches could coexist, with tranching handling the more nuanced risk allocation that institutional capital increasingly demands.