Quote:
Originally Posted by Mrmusicrecorder
He is not saying you can't make money this way, the point is what you have laid out is not arbitrage. Simple.
I think there is such thing as conceptual arbitrage. Where correlations can cause two things to be related enough and the conditions that led up to their pricing can be distorted enough where it's possible to create a situation that could be called arbitrage.
Arbitrage exists as a function of risk. There is always some risk so there is no such thing as arbitrage. You can't prove that something is arbitrage in practice but only in theory. Even things that seem pure have to be exploited and it's the exploitation that nullifies the definition because the things being exploited are too close in value.
The reason that only conceptual arbitrage can be proven is that the variables that go into them can have a positive expectation individually that make their total value exceed the risk of implementation and the exploitation of those two values(or more). If two prices are different in two markets of something that is supposed to be equally valued then it can't be proven that either thing is more or less valuable than the other thing as the difference is based on trying to target two inefficient markets or a group of inefficient markets. So what is being arbitraged is the lack of awareness of the people buying or selling whatever is being bought and sold. Conceptual arbitrage could involve two things that have a value both individually and in correlation that exceed the ability of the market to correct them.
If you had the ability to what I call "pie map" a group of assets(bonds,stocks,baseball cards whatever) and work out their corralations you could take a position that might have an expectation that allowed you to not lose under any scenerio in which the markets themselves were still fuctioning or you were still alive. If the baseline for what you wanted arbitrage to be was set at a condition of society that was still functioning you could create a position that allowed you to profit without risk.
Last edited by northeastbeast; 08-25-2011 at 12:29 AM.