Quote from def:
Couple of reasons why I disagree with this comment:
1. To arb, you need a buyer and a seller. If you were in the pit and looking to buy against the minis, who was going to sell it to you? (my guess is all offers vanished).
2. If you are sharp, you'd know about the 6 point rule and might find it to risky, selling a mini or a buying above the limits.
3. They did there job. The spike lasted 43 seconds before the market returned to its previous level. I think that's pretty impressive.
----- 4. If the arb was done automatically by exchange computers, IB would lose out on arb commissions.
I like you def, but there is no way that you can convince me that the arbs did their job when the ES - SP differential was that big.
