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>If you had access to all the tips and data and insider information that sportbooks operate with

Can you give an example of what you're talking about here? Because it sounds like you're accusing these large publicly trade companies of participating in organized crime. There is regulation when it comes to sports betting that doesn't exist with general prediction markets. An athlete can't just feed a sportsbook "insider information" in the way you're suggesting. The only private info that they are supposed to have is better behavior details that you claim doesn't factor into their decisions.

by wavemode1 days ago|

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Books like DraftKings and FanDuel get their lines from market makers like Circa. Market makers use a variety of information for setting initial lines (you'll have to go ask them), but one of the main ways they move lines afterwards is professional action. That is, if some person or entity who Circa knows to be a profitable professional better puts down a large bet in a certain direction, Circa will move their line in that direction.

Where did that entity get that information, and how are they right so often? Your guess is as good as mine. I'm not accusing anyone of anything.

by slg1 days ago|

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>That is, if some person or entity who Circa knows to be a profitable professional better puts down a large bet in a certain direction, Circa will move their line in that direction.

Well that's the source of our confusion then. I agree with this, but it conflicts with what you said a few comments up:

>because bookmakers don't move the odds with the action.