LR68, they update at the end of the day and make the data available for free, but you can subscribe to intra-day updates for the buy-if and sell-if. You can develop portfolios. Info on the payment page.
I've never subscribed, but looking at their claimed level of accuracy it is tempting. They seem accurate for KATX. As you might have observed I frequently post the results here.
Wonder if anyone on the board has ever subscribed to American Bulls?
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