The funds in question at Refco were funds at the Recfo Capital Markets unit which were not covered by SIPC insurance. SIPC insuance covers cash, bonds and equity accounts to the above mentioned limits. Futures and derivatives accounts are not covered under SIPC rules.
From SIPC website, items not covered:
What SIPC Covers... What it Does Not
The cash and securities â such as stocks and bonds â held by a customer at a financially troubled brokerage firm are protected by SIPC.
Among the investments that are ineligible for SIPC protection are commodity futures contracts and currency, as well as investment contracts (such as limited partnerships) and fixed annuity contracts that are not registered with the U.S. Securities and Exchange Commission under the Securities Act of 1933.
It is important to recognize that SIPC does not work the same way as the Federal Deposit Insurance Corporation in terms of blanket protection of losses.
http://www.sipc.org/how/covers.cfm
From SIPC website, items not covered:
What SIPC Covers... What it Does Not
The cash and securities â such as stocks and bonds â held by a customer at a financially troubled brokerage firm are protected by SIPC.
Among the investments that are ineligible for SIPC protection are commodity futures contracts and currency, as well as investment contracts (such as limited partnerships) and fixed annuity contracts that are not registered with the U.S. Securities and Exchange Commission under the Securities Act of 1933.
It is important to recognize that SIPC does not work the same way as the Federal Deposit Insurance Corporation in terms of blanket protection of losses.
http://www.sipc.org/how/covers.cfm