Stock Buying Power -

Your buying power isn't a static number. It changes based on:

If the stocks you already own drop in value, your equity decreases. Because your borrowing limit is tied to your equity, your buying power drops too. stock buying power

If you put all your money into one "risky" or volatile stock, a broker might reduce your leverage, effectively lowering your buying power to protect themselves from a total wipeout. The Bottom Line Your buying power isn't a static number

While it sounds simple, how it’s calculated depends entirely on what kind of account you’re using. 1. Cash Account Buying Power a broker might reduce your leverage