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Sorry for the vague question, I will improve it once I get an answer...
In the picture bellow I marked two "Instruments" that are being used for trading on ICBIT. I don't understand what the difference is and why the value of one is so much higher than the other.
Any help understanding what that means would be great
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The number after the BTC/USD is the settlement date of that particular futures contract.
You can find a list of all ICBIT futures in this page, and clicking on one will show you all the details, for example: BTC/USD-12.13
As for why the prices are different, it's somewhat outside the scope of a Bitcoin discussion. I really suggest you read up on Futures Contracts. Make sure to fully understand the nature of Futures trading before investing in it.
