The collateral is 1K mixUSDC, shares in the mixUSDC vault. At a share price of 1.0209 USDC they are worth 1K USDC, or $1K at USDC’s $1.

A fall of 5.3% in the vault’s share price would take collateralisation from 111.1% to the liquidation line at 105.3%.

72.0289 alUSD of the debt is set aside for repayment. Line redemptions clear it, and at this share price clearing all of it takes 70.5542 mixUSDC from the collateral, plus 0.18 mixUSDC for the line’s 0.25% redemption fee.

Across the 51 line redemptions on the timeline below, the line cleared 81.1965 alUSD of this position’s debt and took 80.08 mixUSDC of its collateral. Valued in USDC at each redemption’s block, with one alUSD counted as one USDC, that is a net of −0.204 USDC for the holder: the debt cleared less the value of the collateral taken. The line’s 0.25% redemption fee, paid to Alchemix’s fee receiver, is −0.203 USDC of it (0.2 mixUSDC). Each redemption’s own net is in its card’s detail.

Set-aside grows block by block between readings, and an event card’s before figure is the reading at the previous card’s block, so a card’s set-aside move includes what built up in between.