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?
Every holding has a target for the achievement they want and they will try to sell the asset when the price has reached that target.
Holding is just about holding and how they can take advantage of opportunities to make maximum profit from the process they are going through.
Regarding the exact number, it is up to each person who holds it because sometimes the placement of the selling price is based on the strategy they make.
Like waiting for ATH and selling the bitcoin they have or even selling half of the bitcoin holdings they hold to make another accumulation from the previous profit.