Securities Investor Protection Act

The Securities Investor Protection Act (SIPA) was enacted in response to a wave of broker-dealer failures in the late 1960s — a period of back-office breakdowns and financial stress in the securities industry — that left many investors unable to recover their assets. Congress determined that investor confidence in the brokerage system required a formal protection mechanism analogous to deposit insurance in banking.

SIPA created the Securities Investor Protection Corporation as a non-profit entity funded by member assessments from registered broker-dealers and, if needed, a line of credit with the US Treasury. All broker-dealers registered with the SEC and members of a national securities exchange are required to be SIPC members. SIPC protection is not government-backed insurance like FDIC coverage, but it does carry the implicit structural support of the congressional backup line of credit.

When a SIPC member broker-dealer fails with customer assets missing, SIPC initiates a liquidation proceeding and works with a court-appointed trustee to return customer assets. SIPC covers missing securities and cash up to $500,000 per customer, with a $250,000 sublimit on cash claims. The coverage applies to each separate capacity in which a customer holds accounts — individual accounts, joint accounts, and IRAs each receive separate coverage.

A critical limitation of SIPC is that it does not protect against investment losses from market movements. If a broker-dealer simply goes out of business and customer assets are properly held and segregated in compliance with SEC rules, those assets are returned intact and SIPC coverage may not even be triggered. SIPC protection specifically addresses situations where customer assets are missing or inaccessible due to the firm's failure — such as fraud, unauthorized trading, or improper commingling of customer and firm assets.

SIPC protection also does not extend to all investment products. Commodities, futures contracts, fixed annuities, and currency are not covered. Investment funds, securities purchased on margin (the full collateral value), and unregistered investment contracts may have limited protection. Investors holding amounts above SIPC limits should review whether their broker-dealer maintains supplemental private insurance coverage.