Stan Kroenke has increased his stake in Arsenal to 29.9%, it has been confirmed in a statement to the Stock Exchange.
This moves Kroenke close to the threshold whereby he would have to make an offer for all the shares in the football club.
The Denver-based business has purchased a further 200 shares in the club's parent holding company. When he reaches 29.99% he will be able to launch a full takeover.
Kroenke purchased 100 of those shares from Arsenal chairman Peter Hill-Wood.
Arsenal manager Wenger said: "Without any doubt he is interested in football and Arsenal. It can have both a positive and a negative influence, that is the same with every owner.
"As to what his ambitions and goals are, I do not know. He can answer that question better than me.
"He is at 29.9%, so he is not yet in a position where is has to make a bid, so the situation at the club does not change.''
The Arsenal boss insists he remains focussed on the job in hand with the team, rather than what may be going on 'above' in the Emirates Stadium boardroom.
"I care and worry about my plans,'' said Wenger. "I see it like floors - they are above my head, and I look downwards to the team. I take care of what is under my responsibility - that means the team, the way we play, the results and our next game.
"All the rest is a little bit above my head.''
