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2

I hope this help you. We have to start from the very first step, namely how the Kelly formula is calculated. We have the chance to make a bet on a event $A$ that as an odd (decimal odds) $O_A$. We want bet only a fraction $f$ of our capital $V_0$. How much of our capital we have to bet? Well, if we win will face with a capital $V_1$  V_1=(1+(O_A-1)f)V_0 ...

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I've tried many of these too and often it not good. It's because there are no such thing as "true price". You are trying to calculate thing that doesn't exist. Probably it makes sense to work with "original" information - bid, ask, orderbook itself. Also it's important how liquid instrument is. For liquid instruments you can just use ask + bid / 2. But if ...

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Speaking from personal experience, you definitely do not need anything like the first response alluded to. I'm running a pretty sophisticated outfit without the need for any monthly fees for data, you can find everything online these days. Monthly fees for trades of course can run into a few hundred bucks a month. If you work on your programing skillz and ...

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