Caitlin Ostroff

Join our team and write about the people and forces shaping markets. Huge bets on AI. Macro trades affecting nations. Succession dramas. Individual investors making exotic wagers. Requires first-class reporting and the writing to do it justice. dowjones.jobs/new-york-ny/re…

The U.S. government says its agents are under attack. Most of the alleged culprits in the tweets were U.S. citizens. From my @WSJ colleagues @noslouch, @brenna__smith, @HannaCritch, @bellecushing and @emmatscott wsj.com/us-news/immigr…

My friend wrote a book and you should buy it 📚

Sorry. Phone died. What did I miss? In the meantime, I wrote a book

NEW: A fraternity that counts Jeff Bezos' stepson as a member under investigation for insider trading. Polymarket-branded beer pong sets. $20,000 in funding to open a prediction market club. Here's how prediction markets are gaining ground on campus. wsj.com/business/media…

“We know this shouldn’t be allowed,” said one brother involved. “People are like, is this insider information? Is this regulated? You feel like you’re doing something you’re not supposed to. It feels like someone should stop you.” Must-read: wsj.com/business/media…

ICYMI: My latest with @sgurman

Did Polymarket finally go too far? It's just removed a betting market on nuclear detonation, amid intense debates over the ethics of war betting and the risks of insider trading on military strikes. From @ceostroff wsj.com/livecoverage/s…

My latest with the great @sgurman

New: After a @WSJ analysis identified more than 40,000 files that appeared to be missing from the DOJ’s website, a DOJ spokeswoman said that “47,635 files were offline for further review and should be ready for re-production by the end of the week.” wsj.com/us-news/law/th…

Kalshi has posted its first disciplinary actions, against a former longshot candidate the California governor and a MrBeast employee. My colleague @kryshur reports on the brave new world of prediction-market enforcement actions wsj.com/business/media…

It's one of the wackiest corners of prediction markets: "mentions", where traders bet on phrases that politicians and celebrities say at upcoming events. Will the words "insider trading" and "manipulation" appear in this story? With @ceostroff @ByKLong wsj.com/finance/invest…

@AndrewForce8 @khadeeja_safdar It’s in print today!

@ceostroff @khadeeja_safdar Could you please tell me if this appeared in Feb 18 or Feb 19 print edition?

On May 3, 2016, Epstein sent an email to Kathy Ruemmler. He wrote that Jean-Luc Brunel was planning to go to prosecutors the following week and one of Brunel’s friends had “asked for 3 million dollars so that Jean Luc would not go in.” w/@khadeeja_safdar wsj.com/us-news/epstei…

@ryangrim An effort by so many in the newsroom. Thank you for reading!

WSJ is doing some very strong reporting on this beat

@emsteck @khadeeja_safdar Thank you for reading!

Another banger from WSJ's @khadeeja_safdar and @ceostroff.

@KFILE Thanks, Andrew!

Incredible WSJ story wsj.com/us-news/epstei…

New via WSJ: French modeling scout Jean-Luc Brunel was secretly negotiating in 2016 with lawyers representing Epstein's victims, according to DOJ files. Brunel's lawyer told them his client recruited girls for Epstein and had incriminating photographs. Then Brunel went dark. wsj.com/us-news/epstei…

NEW: In 2016, Jean-Luc Brunel was discussing a date to walk into the U.S. Attorney’s office in New York to provide evidence against Jeffrey Epstein—in exchange for immunity. On May 3, Epstein fired off an email to Kathy Ruemmler. He wrote that Brunel was planning to go to prosecutors the following week and one of Brunel’s friends had “asked for 3 million dollars so that Jean Luc would not go in.” Story w/ @ceostroff wsj.com/us-news/epstei…

Israel has arrested several people, including army reservists, for allegedly using classified information to place bets on Israeli military operations on Polymarket. From my colleague @DovLieber wsj.com/world/middle-e…