Not to criticize but you don't seem to know what you're talking about.
Real investors gladly tie up their money for weeks or years at a time. To invest means to make a commitment. It's gamblers that are afraid to commit.

This is the difference between investing and speculating and gambling.

Gambling is putting your money on what you hope will be a winning position. You don't really buy anything when you gamble, so when you lose you don't continue onwards without putting in more money.

Speculating is buying and hoping the price will go up so you can sell at a profit. The difference between speculating and gambling is that it is game over for the gambler if they made the wrong pick, whereas with the speculator, they have something of value and the option to hold on until they are satisfied the price point meets their objectives.

Neither of these results in economic activity though and that is why they are not investing.

Investing is committing resources to something which has at it's heart an economic activity, i.e. an activity that produces some value. That actually necessitates commitment and commitment on the order of weeks is nothing. Most investments take years to pay off.