Haaretz published an article originally from AP:
U.S. President Donald Trump mixed reelection business with pleasure during a weekend stop at his Mar-a-Lago resort in Florida, attending a fundraiser on Saturday evening expected to raise $10 million for his campaign and the Republican National Committee.
The event was believed to be his most expensive fundraiser ever, with invitations going to donors who gave $580,600 per couple, according to The Washington Post, which obtained an invitation to the event at the Palm Beach estate of Jewish billionaire investor Nelson Peltz.
Saying "Jewish billionaire investor" seemed curious to me, especially from AP. Peltz gives to Jewish causes but that it not what he is most known for, an mentioning that he is a Jewish billionaire in an article about Trump seemed to be an antisemitic swipe to associate Trump with Jewish billionaires.
It turns out that the "Jewish" was an addition by Haaretz; it was not in the original AP article.
Perhaps we can give Haaretz the benefit of the doubt by assuming its readership would like to know that Peltz is Jewish, but it feels like a slur in this context.