Is a single exchange level 2 subscription sufficient?

Kaga said:
@deaddog Well, I have API access to my broker and plan to be that algo you are mentioning. Which is why I'm looking into this stuff. :)
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I'm afraid you can't beat the algos running HFT.
 
I recently signed up for Deep Book data (ARCA, NSDQ, and NYSE). I have to say, it was cool at first, but I don't think I will be keeping the Deep Book data next month. At first I felt like it gave me an edge, but after having it a week, I'm not so sure.
 
calvinp239 said:
Curious to know what changed your mind?
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I just thought about it and so many orders are hidden, so I'm not getting the whole picture. I feel like I can trade just fine using the top of the book. If there was no way to hide orders, I would definitely keep the Deep Book data.
 
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