Your assets, for examples shares of Apple stock or an S&P 500 mutual fund, are required by federal law to be held separately from the broker’s assets at all times. Thus, in the vast majority of cases, there are no missing securities and the primary role of the SIPC is to oversee the transition of assets from the failed brokerage firm to another solvent firm. If there are
missing assets, then the SIPC will cover $500,000 of
missing assets ($250,000 maximum for missing cash),
per legal entity.
The following would qualify as separate legal entities, each subject to the $500,000 limit: your individual account, your trust, your IRA, your spouse’s individual account, trust and IRA, your joint account, as well as a custodial account for a child.
Example of meeting and/or exceeding SIPC limits. So for example, you could have $2 million of non-cash assets at a failed firm in a single taxable account. If 75% of assets are recovered from the failed firm, you get $1.5 million back from the firm and $500,000 from the SIPC. If only 50% of the assets are recovered, that’s $1 million back from the firm, $500,000 from SIPC, and you’d be out $500,000 unless there are additional recoveries in the future. Again, a recovery rate as low as 50% is highly unlikely based on historical failures. Per the SIPC annual report, the average recovery rate for insolvencies is 99%. Most examples that I’ve seen use a 90% recovery rate as a conservative example.
VMC [Vanguard Marketing Corporation] has secured additional coverage for your account, which applies in excess of SIPC, through certain insurers at Lloyd’s of London and London Company Insurer(s) for eligible customers with an aggregate limit of $250 million, incorporating a customer limit of $49.5 million for securities and $1.75 million for cash.
Note the total aggregate limit of $250 million, though. Last time I checked Vanguard mutual funds had over $3 trillion in assets under management. Of course, most of those assets are not held in Vanguard Brokerage Services (but in institutional funds and other mutual fund accounts outside of VBS). Still, $250 million across all of their accounts doesn’t seem like very much. A few big fish with $50 million accounts and most of that would already be used up.
Reference:
Exceeding $500,000 SIPC Insurance Limit at Vanguard (or any Brokerage) — My Money Blog