Why can’t I use all of my Buying Power to buy a stock?
Your Buying Power reflects your full margin available, assuming a 50% initial requirement (the minimum initial requirement per regulations).
This initial requirement may change, depending on the specific stock. This is because some stocks require a higher initial requirement. If a stock does have a higher initial requirement, you would not be able to use all your Buying Power on that single stock. This is because when a stock’s initial ratio is higher than 50%, your buying power for that individual stock will decrease.
To view the specific requirement ratios for a given stock, you can view the Margin Requirements section on the stock’s detail page.
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