You manage an investment fund invested exclusively in Danone shares.

On $1$st January, the Danone share price is $50$ EUR. On $1$st June, Danone distributes a dividend of $1\mathrm{.}5$ EUR per share. On $15$ August, you reinvest these dividends in Danone shares $($Danone$\text{'}$s price is then $35$ euros$).$ On $31$ December, Danone's price is $50$ EUR.

What is the profitability of your fund during this period? $($Cash investments are $2\%)$