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when we optimize a strategy by parameters, we should comfirm this is not too much. Take for an example, define a parameter 'a'; if 'a' > 0, we long; else we short; Create a strategy with only this one parameter, I think we can't confirm this strategy optimized too much if we only test 10...

I am seeking for a web/app which can receive my trading signal(which is sent by my python/rust code) and show my trading's curve(I mainly trade cryptocurrence and stocks). I search a lot but none is fit, for example, "trading view" who supports paper trading but should send trading orders by...

two method: 1. data driven 2. idea driven "2" is more stable than "1".

nice; it is really important to find out specific characteristics; could you share which characteristics you think are very important for a trend trading? such as volume, volatility and so on? and we would never real trading unless we know the characteristics which should be validated, yes?

yes you are right; but most time the reason for difference between stocks are not so simple.

the `names` you means `stocks names`?

Thank you for your link and I review all its reply and I think if we can understand the reason why strategy not fit then we can be more confident about it.

do you mean the logic as several "rules"?

It is realy strict as you said and in the fact I also think so, but it is really difficult; Instead I sometime train a strategy by "APPL", and I would believe it most if the trained strategy runs well on "IBM" (at least several tradings) even though it runs not so well another. Is it ok?

Sometime I think out a trading idea and then I back test it on one stock, which shows nice; after that I would test it on many stocks, by which at last I find the strategy runs well on several stocks but also failed on many other stocks. Shall I believe this strategy(only use it on several...

Sometime I want to buy a big volumne of some stock/cryptocurrency, if I use "market orders", its price would be push a lot and even if I use limit order, I also should suffer a loss for these trading; so what is a goog method to avoid pushing price in this situation?

I want to trade on the web: https://www.quantconnect.com/ I can't confirm whether it deserve trust and would it be copy or see by Quant Connect or other persons when the trading strategy is deployed on the web?

you mean the auto trading robot doesn't work on "ROTS APP"? but I find some one make profits well

its websit: https://www.bots.io/ does anyone know it? how does it work?

I want to use FM/GMM method to do multiple factors trading, shall I get some advice about this? especially from very beginning.

thanks everyboday; these are usefull and needs much experience .

I think most trader had this situation: he/she was eager to close this order which had gain some profit; this trouble me sometime and I still not find good method to resolve it; anybody can give me some tips? thanks!

thank you for each information.

I want to trade two stocks like this: long stock A and short stock B meanwhile; I have back test for this like this: take one day for example, this day's return is "closeA/openA-closeB/openB"; I find this back test is well,but the back test is based on that stock A and stock B were traded by...

strategy one: IR(infomation ratio): 0.3210;win ratio(win orders/all orders): 0.61; strategy two: IR: 0.2101; win ratio: 0.63; Is there some formula for calculating how much money should be arranged to these two strategies? or needs some other indicators?