Could anyone explain why ? What was the reason for reducing the share price and distributing that money to share holders ?
Firstly, I think it's the "market" that reduces the share price based on the news of the distribution amount. (Market Maker's)
A share price drop usually happens when a stock goes ex-dividend, and, said drop is usually proportional to the value of the dividend to be paid.
Essentially and a very basic version, the share price multiplied by the number of shares on issue, gives an approximate market capitalisation, or a monetised company valuation.
If a company pays a dividend, a proportion of the company value is being paid to share holders, thus, the company value theoretically drops, usually by means of a share price fluctuation, which is a normal market balancing act.
I think BBUS is a fund?, but I understand the basics to be the same or similar, for the purpose explained here.
Instead of dividend, it's a distribution etc