Prepared by A-J | Author brand: 盡職生活｜阿J的普通人理財筆記
About the author/site · Vocus @WUCJ ↗ · Editorial policy
Page version: 2026-08-15 | Official or primary sources are preferred for material rules and figures. AI may assist structure, translation, and code, but is not used as the sole factual source.
About the author/site · Vocus @WUCJ ↗ · Editorial policy
Page version: 2026-08-15 | Official or primary sources are preferred for material rules and figures. AI may assist structure, translation, and code, but is not used as the sole factual source.
Key point: A stock-backed loan combines market-price risk with debt. Maintenance and call thresholds must come from your actual contract.
One market decline can hit twice
Falling collateral lowers the maintenance ratio, while stocks purchased with the borrowed money can fall at the same time.
Cash may be needed at the worst moment
A severe drawdown can create investment losses and simultaneously require extra collateral, repayment, or interest payments.
High correlation increases the danger
Pledging technology stocks and using the loan to buy more technology stocks concentrates the same risk driver rather than diversifying it.
Stress-test household liquidity, not just the ratio
Ask whether salary and cash reserves could handle a call within days after a 40% market decline without relying on selling risky assets.
What to check before borrowing
- Provider and any restrictions on loan use
- Advance rate, interest rate, term, and renewal rules
- Maintenance formula, call threshold, deadline, and cure level
- Whether collateral can be sold / substituted and liability for any shortfall after disposal
Primary / official sources
This page does not recommend any stock, bank, broker, or loan. Formal terms depend on the provider contract and current rules.