(Bloomberg) -- Harvard alumnus and hedge fund manager Bill Ackman called on university president Claudine Gay to take immediate steps to reduce antisemitism on campus, a situation he called “dire” after meeting with students and faculty last week.Most Read from BloombergAmazon’s Jeff Bezos Announces Move to Miami From SeattleSam Bankman-Fried Convicted of Fraud in Stunning FTX CrashBiggest Cross-Asset Rally This Year Takes Wall Street by StormIceland’s Blue Lagoon on Alert for Magma Flows After