👉 A broker's fluid, often referred to as brokerage fee or trading fee, is a cost charged by financial institutions to facilitate the buying and selling of securities for their clients. This fee can take various forms, such as commissions on trades, spreads (the difference between the buy and sell prices), or management fees for actively managed funds. Brokers use this fee to cover operational costs, provide market access, and sometimes offer additional services like research or portfolio management. The broker's fluid is a critical component of the financial market, ensuring liquidity and enabling smooth transactions for investors.