Vermont

He was a quant trader at a premier proprietary trading shop. Very odd. Might have been let go recently though given the visa situation.

https://www.efinancialcareers.com/news/felix-bauckholt

Who was Felix Bauckholt, the quant trader on an allegedly expired H1B visa who died after a shoot-out at the Vermont-Canada border this week?

Bauckholt's still live LinkedIn profile says he worked in the New York office of Tower Research Capital, the high frequency trading firm. Tower Research didn't respond to a request to comment on Bauckholt's recent employment status, but the alleged expiry of his visa suggests he may no longer have been working there.

Tower Research Capital is a high frequency market maker and prop trading firm that operates high speed trading strategies. US government data suggests that two people at Tower Research have had H1B visas renewed this year: a head of data on a base salary of $350k and a quant trader on a base salary of $165k. It has 1,200 employees in total.

Bauckholt's LinkedIn profile says he joined Tower in October 2021 after two years at Radix Trading. He also completed a Jane Street internship in 2018. Jane Street interns now earn around $20k a month.