US stock market operator Nasdaq has increased its holding in the London Stock Exchange (LSE) to 25.1%.
Nasdaq's steady buying spree has raised questions about its motives
Nasdaq has been steadily boosting the size of its stake in the LSE, sparking speculation that it is about to launch a new takeover bid.
In March, Nasdaq withdrew a proposed £2.43bn ($4.2bn) bid for the LSE after the exchange rejected its approach.
Nasdaq said it bought another 2.22 million LSE shares on Friday at an
average price of 1,235.5 pence each.