Looking for Historical Tick Data, need accuracy

I'm fairly new to trading, and since my background is in Computer Science, I thought I'd leverage it by creating a Day Trading Script using ML (Tensor Flow). If anybody has any more general recommendations I'd be very grateful, but for now I just need a good source of tick data. I was looking at TickData, but they're quite expensive. Then I looked at Kibot which is SIGNIFICANTLY cheaper, but I've heard their fairly inaccurate when it comes to tick data. Can anybody recommend a source of historical tick data? I don't need data on EVERY symbol, just a few of the most commonly traded ones to get me started.

 

Free www.tickstorey.com

 

any way to verify its accuracy?

 

You're not going to find free/cheap tick data that is also good. There are numerous things that go into "good data". For example, data should be adjusted for splits and dividends. You should also decide what kind of bucketing you will use for your data. There are numerous ways to turn ticks into usable bars.

A good source will be your broker. Get a membership at Interactive Brokers or another broker that offers tick level data, deposit the required amount to get it, pay for your memberships, and use that. You should base your strategies off of the data you will receive from your broker.

 

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JS injection like this hasn't worked in like 10 years

 

start recording yourself to avoid any faux data. a tensorflow like array object is an excellent choice (symbols[]; timelocal[]; bid[];ask[] ;news[]; space_time[][][][][][][][] different data structures possible in tensors. would also work in other languages. use the clock cyles, don't wait for incoming ticks to wake up or listen to democrat funded propaganda about the speed of light and theoretical upper bounds on latency.

 

Did you shorten your post? I read it earlier and it had a book recommendation.

 

its illegal to react to the starter gun faster than the speed of sound.

 

You only need tick data if you are planning to get involved in micro-structure games and my prior would be that you don't (not that you can easily get the types of latencies required anyways). Thus you probably can get away with 1 min bars or similar type of data.