In the United States, an online brokerage account can have meaningful protection against a broker’s failure—but it is not risk-free or insured against investment losses. Securities Investor Protection Corporation (SIPC) protection may help restore eligible customer property that is missing when a member brokerage firm fails, up to statutory limits. It does not cover a stock’s decline, and it does not by itself protect you from phishing or account takeover. Cash may also be held at a broker, in a money market mutual fund, or at a bank through a sweep program, with different rules for each.
What SIPC protection covers—and what it does not
SIPC protection is designed for a specific problem: a SIPC-member brokerage firm fails and eligible customer securities or cash are missing. The SEC and SIPC’s June 7, 2023 Investor Bulletin: SIPC Basics describes protection of up to $500,000 per customer, including up to $250,000 for cash claims. These are statutory limits subject to eligibility, account-ownership rules, and the claims process—not a promise that every balance is insured or paid immediately.
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SIPC describes its role as follows: “SIPC only protects the custody function of the broker dealer, which means that SIPC works to restore to customers their securities and cash that are in their accounts when the brokerage firm liquidation begins.” (SIPC, “What SIPC Protects”.) The purpose is to address missing customer property in a failed firm’s custody, not to guarantee the value or performance of investments.
Examples of losses SIPC generally does not cover
- A stock, bond, or fund loses market value, or an investment becomes worthless.
- You lose money because of bad investment advice, an unsuitable recommendation, or a promise of returns.
- An asset is held outside a SIPC-member brokerage firm.
- A commodity, futures contract, or foreign-exchange trade is not eligible customer property under SIPA. Digital assets that do not qualify as securities are not protected merely because a SIPC-member firm holds them; treatment depends on the asset’s legal status and account structure.
Ownership capacity matters, too. The limit is not simply $500,000 for every account number: how accounts are owned and categorized affects how customer limits apply. For a complex ownership arrangement, consult current SIPC guidance or a qualified legal professional.
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How brokerage cash differs from FDIC-insured bank deposits
A cash figure on a brokerage statement does not, by itself, tell you where the money is held or which protection may apply. Cash maintained at a broker for securities transactions may fall within SIPC’s eligible-cash rules if the firm fails and the cash is missing. A money market mutual fund is a security, not a bank deposit. A bank sweep moves cash to one or more participating banks; a qualifying deposit may be eligible for FDIC insurance if a bank fails, subject to FDIC rules and limits. SIPC protection and FDIC deposit insurance are distinct programs.
Do not assume a balance is covered by both programs or that a sweep creates unlimited FDIC coverage. Read the brokerage account agreement, sweep disclosure, and statements to find the destination bank or banks and the account’s ownership category. Deposits you already hold at those banks may count toward applicable limits. The exact treatment depends on the specific arrangement and your other deposits.
How to check a brokerage firm before opening an account
- Identify the legal entity. A marketing brand may not be the firm that carries or clears your account. Find the legal name in the account documents.
- Check registration and history. Use FINRA BrokerCheck to research the firm and any named individual broker. It can show registration and background information, including qualifications, employment, and reported disciplinary actions, investigations, complaints, and related events. It is an information resource, not an endorsement or guarantee of future conduct.
- Verify SIPC membership independently. Check the legal entity against SIPC’s member information; do not rely only on a brand name or a general claim that investments are protected.
- Read the relationship summary and account documents. Review Form CRS, the fee schedule, account agreement, custody or clearing arrangement, cash-sweep terms, conflicts, services, and how transfers and withdrawals work.
- Compare practical protections. Consider the account’s cash destination and applicable FDIC terms, available authentication and alerts, and how to reach support and recover access—not only the SIPC limit.
There is no basis here to label one brokerage the safest. Registration and membership checks help establish who you are dealing with and what protections may apply, but they do not guarantee service quality, investment outcomes, or immunity from fraud.
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SIPC does not automatically reimburse losses from a stolen password or account takeover. The SEC’s April 23, 2026 guidance recommends layered safeguards; the exact controls offered vary by brokerage.
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- Use a strong, unique passphrase for the brokerage account, and do not reuse it elsewhere.
- Turn on two-step or multifactor verification if the firm offers it.
- Enable available alerts for logins, password or contact-detail changes, trades, transfers, and linked external accounts.
- Keep your phone, computer, operating system, browser, and brokerage app current; limit unnecessary sharing of personal information.
- Check account statements and trade confirmations for activity you do not recognize.
- Do not follow unexpected links in ads, texts, emails, or messages. Reach the firm using its known official website or a verified phone number, and never give an unsolicited contact your password or authentication code.
These steps reduce exposure but cannot guarantee that an account will never be compromised. No probability of brokerage-account hacking or asset loss is established by the cited guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to do if you see suspicious activity
- Contact the brokerage promptly through a verified phone number or official site. Ask what steps to take to secure the account; SEC guidance says you can ask whether to close a compromised account and move assets to a new one.
- Follow the firm’s security and dispute process. Report unauthorized access, trades, or transfers rather than assuming SIPC will repay them. A claim about an unauthorized trade may depend on establishing that it was in fact unauthorized; SIPC’s role concerns eligible missing property after a member firm’s failure.
- Preserve records. Keep relevant messages and note suspicious trades, transfers, or account changes while following the firm’s instructions.
Contacting the broker quickly is important, but the outcome of a disputed transaction depends on the facts and applicable procedures. Review the SEC’s steps for responding to suspected fraud alongside your firm’s current contact and dispute information.
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Which protections apply to which risk?
| Risk or asset | Protection that may apply | Key limit |
|---|---|---|
| Eligible securities or cash missing after a SIPC-member brokerage firm fails | SIPC | Up to $500,000 per customer, including up to $250,000 for cash claims, under the SEC/SIPC June 7, 2023 bulletin; eligibility and ownership rules apply. |
| Investment falls in market value | Neither SIPC nor FDIC insures the loss | Investment performance and market value are not custody failures. |
| Cash held at the broker for securities transactions | SIPC may apply if eligible cash is missing after firm failure | Coverage depends on SIPC rules and the facts of the account. |
| Money market mutual fund shares | Potential SIPC treatment as securities if eligible and missing after firm failure | They are not bank deposits and are not FDIC-insured as deposits. |
| Qualifying cash swept to a participating bank | FDIC deposit insurance may apply if that bank fails | FDIC rules, limits, ownership category, destination bank, and other deposits matter; see the broker’s sweep disclosure. |
| Phishing, account takeover, or unauthorized transactions | Broker security and dispute procedures; SIPC does not automatically repay these losses | Report promptly and follow the firm’s process; coverage depends on the facts and applicable rules. |
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