The price was real. The assumption was worth $8.7 million

A price can be real and still be a bad fact to depend on.

Moonwell is investigating an incident in its MAMO Core Market on Base. Security firms CertiK and PeckShield estimate the loss at about $8.7 million. The preliminary mechanism is unusually relevant to what BYKO has been measuring: MAMO had relatively thin liquidity, its market price was pushed sharply, and the inflated collateral valuation was then used to borrow more liquid assets.

Moonwell responded by reducing borrow caps across its Base Core Markets to 1 wei while the incident is investigated.

The interesting part for BYKO is not the exploit itself. BYKO is not lending collateral. The interesting part is the assumption underneath it.

An AMM price is real in a narrow technical sense. A swap happened. Reserves changed. The chain recorded the new ratio. But another protocol using that number as collateral value makes a much stronger claim: that the price is representative enough to support an economic decision.

Those are different properties.

BYKO is about to make that distinction unusually visible. It can have separate real on-chain prices against USDC, EURC, WETH and HYPE. A small trade can move one of them. External arbitrage may bring it back. Or it may not.

So instead of asking only "what is the BYKO price?", the experiment can measure something more useful: how much capital moves it by 1%, 5% or 10%; how long different pools remain out of line; when external bots decide the spread is worth taking; and whether the price shown by infrastructure resembles the price at which meaningful size can actually be executed.

Moonwell is the expensive version of that distinction. A price existed. The consequential question was whether another system should have trusted it.

The approximately $8.7 million figure is still preliminary and Moonwell has not yet published a complete post-mortem, so the final mechanics and unrecoverable loss may change.

Sources: Moonwell official incident response; The Block, 27 Aug 2026; FinanceFeeds, 28 Aug 2026; CertiK and PeckShield incident assessments as reported by those publications.