The securities in my Roth IRA account are missing. They were invested with Bernard Madoff Investment Securities LLC. The account statements list the custodian as owner with me as beneficiary. The custodian has refused to file an SIPC claim for the account which they set up. Do they owe me a duty to do so? They have instead authorized me as “beneficial owner” of the account to do so. I was never permitted to act directly for the account before how can I do so now? What are the risks to me? Have they abandoned me and the account?