Fill in the missing prepositions.

When companies are first listed … the Stock Exchange, their shares are issued, or floated, … a price normally determined … the company. Existing companies which are already listed may issue new shares if they need more capital. The issue … new shares is known as the “primary” market.

The “secondary” market is where shares are bought and sold once they have been issued. Prices are determined … the operation … the basic economic laws … supply and demand.

If investors were unable to realise their assets … selling their shares … the secondary market they would be reluctant to invest … companies. … turn, companies would be deprived … a major source … capital. … these reasons there are stock exchanges … most countries … market economies.

(with, in (3), for, of (5), on (2), by (3), at