Opening and closing positions are completely wrong.
A more empty apartment
Open it.-How flat is it?
Opening a position means entering the market, and closing a position means leaving the market. Your profit and loss is the difference between entry and departure, which mostly indicates your cost position. As long as the price is lower than the empty price, you will make money.
If that's what you wrote
More open-empty open
There are both long positions and short positions in your account, and there are two positions in total. We call it a lock warehouse. It is difficult to unlock small positions. You can't guarantee that both positions opposite are profitable. If you can't do it well, you will lose both positions. Generally, large institutions have many locked warehouse receipts to facilitate the implementation of their respective trading strategies.
More open-flatter
No matter how flat it is, because how flat it is is to wash away the empty orders in your hand, but because you are a bull, there are only bulls and no shorts.
For the whole market, the opening price of 99.99% is not equal to the closing price. As long as someone enters the market, there will be more and more chips in the market, and the positions can be infinitely enlarged. This is true not only for stock index futures, but also for all futures varieties.
The turnover you mentioned is not only related to the amount of funds coming in and out, but also related to the frequency of funds coming in and out.
Only the last point is correct. The number of lots of multiple orders and empty orders held in the market is the same.