#Trading firms buy and sell financial instruments such as stocks, bonds, commodities, currencies, and derivatives.

They make a profit by exploiting the price differences in these assets across different markets, a practice known as arbitrage.

By buying and selling things on the financial markets, trading firms keep the markets moving. In fact, they're so important, they're called market makers. This means:

They act like an additional buyer and seller in the financial markets, ensuring that buyers and sellers can always find a transaction partner.

They provide liquidity: Imagine you're at a music festival and you want to sell your extra ticket. If there's only one buyer (low liquidity), you might have to sell at a lower price. But if there are lots of buyers (high liquidity), you can get a better deal. Trading firms are like these buyers, always ready to buy and sell.