LONDON—Matthew Freud has invested £4m in Huntsworth Group, acquiring a 3% stake following a significant drop in the company's share price.

The Freud Communications founder bought 9.7m shares in Huntsworth, via Rock Nominees.

The transaction was made on 30 July, when Huntsworth's shares were trading at around 41p. Over the past six months, Huntsworth's share price has dropped by more than 30%, driven in large part by underwhelming results. 

Last month, Huntsworth CEO Lord Chadlington noted that the group's board is  "reviewing the second half year and, while there is work to do, we believe that the second half will show improvement over the first half year."

Freud's purchase follows similar investments in M&C Saatchi, YouGov and Engine Group. Earlier this week, his agency took a minority stake in Seven Dials, with Andrew McGuinness becoming CEO of Freuds as part of the deal.