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cryptoeax / arbbot

Arbitrator, a bitcoin/altcoin arbitrage trading bot
https://gitter.im/cryptoeax-arbbot/Lobby
GNU General Public License v3.0
199 stars 78 forks source link

P&L work not correct #6

Closed Scorpic1 closed 6 years ago

Scorpic1 commented 6 years ago

I think P&L worked not correct. P&L without cost on exchange (0,2%) Please included it and check same.

2017-12-06_001657 2017-12-06_002518 Impossible. 2017-12-06_003520

cryptoeax commented 6 years ago

I don't follow. P&L without cost doesn't mean anything. You can't have a "loss" without taking cost into consideration. :-)

The number reported here for each trade is the amount sold - amount bought - all trade/transfer fees. The total sum of all of the total unrealized P&L. There are other things that could be reported here, and if there is a useful metric to report I'd be happy to add it (but just because another site reports something in a specific way isn't a good reason, an exchange site's UI isn't a good interface for an arbitrage bot.)

To give you a good idea of my thinking behind reporting this number specifically, I have been looking for metrics that allow me to monitor the profitability of the bot, in order to make changes to its code to maximize the amount of profits that it is making.

Scorpic1 commented 6 years ago

14% in one day is impossible profit, i think without exchange cost.

cryptoeax commented 6 years ago

14% in one day is impossible profit, i think without exchange cost.

You realize that amount is in BTC not a percentage, right?

cryptoeax commented 6 years ago

Also please note that each trade incurs a risk, so as the bot works you may see a trade that has for example 0.04BTC loss, which would drive down the total unrealized P&L quite a lot in one shot! But 0.014 BTC for 118 trades like sounds quite reasonable performance to me.

Scorpic1 commented 6 years ago

Need see net profit, because you pay fee to exchange to any buy/sell coins.

cryptoeax commented 6 years ago

The fees for the trades are taken into account as I mentioned before.

Scorpic1 commented 6 years ago

In P&L summ in Amount and Bought without fee exchange if you add fee exchange spead will be in minus and with loss. And Profit/Loss - not correct, without fee exchange, need see net profit (loss) with fee exchange. I think and total P&L without exchange fee. Better add in bot spread in percentages (percentage difference). For example if percentage difference spread more 1% enter into trade, do not enter into trade less.

Scorpic1 commented 6 years ago

Example in pictures. Last trade in bot. Coin LBC. Qty 84.75581611 LBC Rate 0.00002890 BTC Subtotal (without fee) 0.00244944 BTC it we are see in P&L

But i am check via Bittrex calculator, 0.00244944 BTC need add commission (fee) 0.00000612 BTC and full total will be 0.00245557 BTC

2017-12-06_183505 2017-12-06_183606 2017-12-06_183724 2017-12-06_185515

cryptoeax commented 6 years ago

OK, I think I understand what you mean now, thanks for the explanation.

You are right about this.

cryptoeax commented 6 years ago

Actually the problem is a bit worse, we don't even take Poloniex's fees into account when simulating a trade. :-(

cryptoeax commented 6 years ago

1220402 should fix this, but it only takes effect for new trades unfortunately. I filed #10 for the problem described in https://github.com/cryptoeax/arbbot/issues/6#issuecomment-349748595.