So my main strategy trades the ES Mini, has been for years, I only withdraw taxes, or maybe move some Capital to fund other strategy ideas. As the capital grows, I increased my position size. Currently I'm at 15 contracts. I have started to notice more and more partial fills on market orders, And limits orders taking longer to fill.
For context,, I enter in and out of positions using market orders mostly. Based on timing and the market condition, so I'm not chasing a particular price when I enter. So entry slippage isn't a problem for me, But partial fills that then fill at the next tick does eat into my profit. I attached today's fill to see what I'm talking about. Two contracts slipping one tick each is not going to break the bank. Especially when today I only had one trade. However, my daily Target is 7 points. Which usually happens in in one to five round trips, So that slippage from too many contracts and partial fills can add up.
When I'm done trading for the day, my take profit is a limit order, and today it took almost 3 seconds from the first fill to last fill, which is the longest I've ever seen. I give my take profit order 30 seconds to fill after being first triggered before it converts into a market order. I'm wondering when that day will come when it will need all 30 seconds.
I just reached 15, and at 14 contracts. These incidents were rare, usually my market orders were fully filled at one price.
The e-mini is probably the most liquid of any instrument in trading, So I don't think I'm affecting the market in any way. But I am wondering when will it just be too many partial fills to be worth going any higher.
I'm hoping that's not going to happen until the 50 range, if I get there.