Cake!14 Aug 2021 21:41
J46,
Let's say there's a company with 100,000 shares, the market cap is £100,000 therefore each share is worth £1, and YOU own 10,000 shares so 10% of the company.
The company then decides to buyback and destroy 20,000 shares, so there's only 80,000 in issue, the market cap hasn't changed, its still £100,000 but now its divided by the number of shares in issue, 80,000 so each share is now worth £1.25.
Therefore your holding (10,000) is now worth £12,500 because although your holding hasn't changed in effect you own a bigger slice of the cake / company.
Hope this is clear!