If you know what other people are doing you can cut in front of them. You can beat someone to the punch who may have traded better than the limit. It’s worth

If you know what other people are doing you can cut in front of them. You can beat someone to the punch who may have traded better than the limit. It’s worth $26 on a 100K transaction for the HFT firms. So let’s say it’s worth $50 to them. Not s big deal if you buy and hold forever. If you day 20 times a year because you think it’s free, that $50 times 20 becomes $1000, or 1% of your stake.