What do people mean when they say to hold on to bitcoin? If someone wanted to spend 300k usd of bitcoin should they spend this amount as soon as they have it or wait longer until its worth a lot more than just 300k usd? How can this be determined?
It all depends on the every individual actually.
Sometimes when someone says they are going to sell X amount on X position, then that's it, especially if the amount is on the trading platform and got a sell order already. But some just hold it on their individual wallets and just tells that its their preferred target position.