I can’t answer that question with any sort of accuracy – and it would probably warrant a call from the SEC if I did!
It could be your broker, it could be your online trading platform, it could be your internet service provider, it could be your email client… hell, it could even just be plain luck.
Suffice it to say that each of you is going to have slightly different results. If we get into a trade at $1.00, some of you will get in at $0.95, some of you will get in at $1.05. That’s just how the markets work.