These trades in the contest are huge and defy belief.
Is it not logical to place some limits? And give the code re: limits to each contestant.

ie. max 100 lots per trade + max 1000 long and 1000 short.
as an example

Unless i am reading the volume wrong?????????
 
Maybe im not reading it correctly

100k *10 = 1million
100k *30 = 3million <----------- this was a start trade for one contestant. 3.000.000
So maybe that is realistic
So perhaps my suggestion is that 'lots' are easier to read than 'units'