I don't know the in's and out's but essentially they are computer algorithm's that automatically buy or sell small parcels. If a broker or company wants to buy shares at a certain price and not have the share price go up too quickly in the process they enlist the use of a BOT that sells small parcels regularly, and if they are trying to unload a stock and don't want the price to drop too much the opposite applies.
If you have a look at the Course of Sales on your trading platform you will see that small parcels of around 1500 shares get sold down every 5 minutes of so. This increases the number of trades and keeps the price looking like it is on the way down. They do this to entice people to sell.
Others may have more clarity but that is how I understand it.
MEP Price at posting:
5.3¢ Sentiment: Buy Disclosure: Held
