Answer
Infinite grid holds most of the coin and sell fraction of the coins on grid. the value remain the same. imagine a coin worth 100$ at start. as it goes up it became 101$ so it sold every 1$ on grid as profit.
grid trading, have defined range so on 10 grid of 100$ each grid will sold 10% of the coin so when it reach the end of top grid, you dont have any coins left
