for those investors who are professionals of course know how they secure their money or even with the profits they get.
it is usually done by selling some to get their capital back and the rest is profit which they will gamble again in the long run.
Yes, it is part of the strategy carried out by big investors because they rotate large amounts of money so it can be very easy to carry out such a strategy at any time they want, which of course is to get profits and secure the capital they have used.