: In a margin account, you can leverage the value of marginable securities you already own to buy non-marginable ones. For instance, if you own $100 of a 50% marginable stock, you may have an additional $50 in non-margin buying power to use for other trades. Key Characteristics
: Many brokers, such as Fidelity Investments and Public , include a "maintenance buffer" (often around 10%) in this calculation to reduce the risk of an immediate margin call if the market fluctuates. Common Non-Marginable Securities non margin buying power
: Assets bought with this balance are considered non-marginable, meaning the broker requires you to put up 100% of the purchase price upfront. : In a margin account, you can leverage
: Using this balance can still create a margin loan. If you spend beyond your available cash by leveraging existing holdings, you will be charged margin interest on the borrowed amount. Common Non-Marginable Securities : Assets bought with this
These assets generally carry higher volatility or lower liquidity, leading regulators and brokers to prohibit borrowing against them: