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I have a project where I would like to track some tick data and create some indicators to follow it. I am thinking of using Node.js for this project, but I would like to know from those in industry if they have come across it in their own or others systems and if they use any particular JavaScript finance libraries.

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Are you only using it for charting? Node.js has not yet (as of June 2014) reached version 1. I know it is widely used for web development but I would be hesitant to rely on it for trading purposes. –  deprecated Jun 11 at 13:19

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We use Node for reporting but not as part of our main signal generating trading system.

To be honest the answer will almost certainly be yes for every common programming technology as it just takes one person to use it somewhere to make the answer yes.

Just look at OCaml, before Jane street, most techno logiest on the street had never heard of it and now its very well known.

Probably the canonical answer for this type of question should be this one: http://quant.stackexchange.com/a/304/743

META RANT In general I find these kind of questions a bit troubling for this site for two reasons:

  1. for any given programming language or stack if you ask is anyone using this for trading the answer is mostly likely yes.
  2. There is no real outcome or call to action from the question. If someone answers yes, so what? if someone answers no, so what? What is the canonical answer to a question like this that

Or put another way, what answer would make the poster happy here?

END RANT

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