Limits of SIPC Coverage SIPC is limited in the risks, amounts, and investments that it covers, as described below. Market Risk Not Covered SIPC does not protect against market risk, which is the risk inherent in a fluctuating market. It protects the value of the securities held by the broker-dealer as of the time that a SIPC trustee is appointed. Trustees are appointed through a SIPC-initiated court proceeding to supervise the liquidation of a SIPC member that is insolvent or cannot return customer cash or securities. An example shows this risk: A broker is shut down owing a customer 100 shares of ABC stock that was worth $50 a share, for a total value of $5,000. Five months later when the SIPC trustee is appointed, the stock has dropped to $30 a share. SIPC coverage would be limited to either replacing the 100 shares of ABC or the $3,000 in cash that the customer’s stock is worth at the time of the appointment of the trustee. Conversely, if the stock rose to $70 a share when the trustee was appointed, SIPC would either give the customer 100 shares of ABC stock or, if the shares are not available, would give the customer $7,000. In short, the fluctuation in the value of the shares represents the market risk that is not covered by SIPC.
比如我是$300 买的特斯拉100股， cost basis 是$300/share, 如果broker破产了，SIPC介入，那它保的是$300 * 100 = $30,000, 还是根据特斯拉的现价每股 $173还我钱？
你自己去SIPC网站去看看，根本没写明白。 另外，要说就好好说，出口伤人没意思的。
你的意思是，SIPC会根据我花的多少钱买的这些股票退钱？
比如你举的这个例子，假设SIPC介入那一刻，特斯拉价值200刀，那它还你一百股特斯拉股票，如果还不了，则还你100*200 = 20K。 假设SIPC介入那一刻，特斯拉价值500刀，还不了股票的情况下，会还你100*500 = 50K
https://www.finra.org/investors/need-help/your-rights-under-sipc-protection
Limits of SIPC Coverage SIPC is limited in the risks, amounts, and investments that it covers, as described below. Market Risk Not Covered SIPC does not protect against market risk, which is the risk inherent in a fluctuating market. It protects the value of the securities held by the broker-dealer as of the time that a SIPC trustee is appointed. Trustees are appointed through a SIPC-initiated court proceeding to supervise the liquidation of a SIPC member that is insolvent or cannot return customer cash or securities. An example shows this risk: A broker is shut down owing a customer 100 shares of ABC stock that was worth $50 a share, for a total value of $5,000. Five months later when the SIPC trustee is appointed, the stock has dropped to $30 a share. SIPC coverage would be limited to either replacing the 100 shares of ABC or the $3,000 in cash that the customer’s stock is worth at the time of the appointment of the trustee. Conversely, if the stock rose to $70 a share when the trustee was appointed, SIPC would either give the customer 100 shares of ABC stock or, if the shares are not available, would give the customer $7,000. In short, the fluctuation in the value of the shares represents the market risk that is not covered by SIPC.