What Is Counterparty Risk and Why Does It Matter?

Definition and mechanics

Counterparty risk is the chance that your broker cannot fulfill its obligations to you. When you buy a stock through a broker, the broker is your counterparty—they owe you the shares or the cash. If they fail, you face losses even if the trade itself was sound.

Real-world scenarios

If a broker goes bankrupt, regulatory protections in most developed markets cover deposit or account insurance up to a limit (commonly $100,000 to $500,000 per account). However, if your broker lends out your securities or uses customer deposits for their own trading (permitted in some jurisdictions), losses beyond the insurance cap are possible.

How to assess

Research the broker's financial stability through independent reports and news. Confirm they maintain adequate segregation of customer funds. Check whether they carry professional indemnity insurance. Verify the coverage limits and scope of deposit protection in your jurisdiction. Never assume size guarantees safety—some large brokers have failed. Spread accounts across multiple regulated brokers if your balance exceeds insurance limits.