No that they are a reaction to a large standing order from an institution or buyer. That we may have some larger buyers in the mix that are not trading but have standing type orders.
The slap of 160k on the ask was the perfect example of
"This leads to another variation of this called the go along buyer. It means when a broker knows there is a big buyer in the stock who is carefully buying at good prices. Instead of standing there all day and trying to work the stock, he will leave instructions with the specialist to tag along with the other buyer. In other words, whenever buyer A buys stock, I want to buy stock there too, same shares, same price"
Perhaps AEXG is providing the liquidity to allow for such buying, helping push the price down to get it to the buying level as well as shorting some shares and making a little money along the way