[BiteCode_dev]

I'm not talking about the times it take for selling as much as the absence of delay between buying and selling.

[eru]

See https://en.wikipedia.org/wiki/Market_maker

[smabie]

Factors, the world, the firm trading, etc all change daily. Also market makers provide liquidity through buying and selling quickly.

If you had to hold a stock for a long amount of time before selling it, you would find it very hard to buy or sell stock.