馬兄給你一些資料,關於 Registered & Eligible

http://about.ag/futures.htm

COMEX 101:

All About the Gold and Silver Futures Market

 

What is in the Warehouses?

COMEX has several warehouses for metals (see the lists for silver and gold). They contain lots of silver. They had 115.452 million ounces (as of 09 Apr 2010), worth about $4001.57 million. This is split into two categories: Eligible and Registered. 

Eligible silver is silver that has been purchased (and paid for) by a long at some point in the past (that they are currently paying storage fees for), and is eligible for delivery at any point that the client wants. It has been assigned to the clients, who have the serial numbers of their bars.

Registered silver is silver that is sitting in the COMEX warehouse, and can be used to settle a contract. Apparently, shorts can buy this silver from bullion banks at the current price, and use it to settle the contract.

As of 09 Apr 2010, there were 53.620 million ounces of registered silver (available), worth about $1858.47 million and 61.832 million ounces of eligible silver (customer owned) in the COMEX warehouses, worth about $2143.10.