Jeff Yass TikTok: This Bytedance investor and conservative megadonor is really not having a good month.

Every so often, a guy comes along who is all of a sudden everywhere—a zeitguy, if you will. But this year a number of developments have put him much more squarely into the center of The Conversation than he had ever been before: • Susquehanna was the largest institutional shareholder in the company that helped take Donald Trump’s Truth Social platform public, which means that at one point—and maybe still, depending on what it’s done with its shares—it owned a major stake in Trump Media and Technology Group, i.e., the company whose stock is traded on the Nasdaq under the roguish ticker symbol DJT. • A political action committee Yass funds—it’s called Moderate PAC—has spent more than $600,000 to support a primary challenge to progressive Pittsburgh-area Democratic Rep. Summer Lee, who first won office in 2022 and is part of the so-called Squad. It’s also become considered less extreme in recent months to criticize Israel, with Gallup finding that American support for the country’s military operations in Gaza fell 24 points from November to March. Crucially, the right-leaning American Israel Public Affairs Committee—AIPAC—also chose not to include Lee among the left-wing members of Congress that it’s targeting in primary campaigns.