[2] The Kohns founded a small brokerage firm, the Eurovaleur Inc.[2] In New York City, she became known as "Austria’s woman on Wall Street."
[4] In 2015 Kohn founded BestFit, her second digital venture after FundsWorld,[5] a platform for the distribution of mutual funds with Intesa SanPaolo.
[15] On 10 December 2010, Kohn was sued by Irving H. Picard, trustee of assets seized by the court from Bernard Madoff, for $19.6 billion.
[16] At the Queen's Bench Division of the High Court of England and Wales in November 2013, judge Andrew Popplewell dismissed all claims against Kohn filed by liquidators of Madoff Securities International Ltd., based in London.
"This unfounded claim ... has been pursued aggressively and relentlessly over several years, on occasion with an unfair degree of hyperbole," he said, adding that Kohn had suffered "poisonous press releases" by the trustee of Madoff's U.S. business, and stating that she was a victim and that her honesty and integrity had been vindicated.
[17] In September 2017, Thema International Fund agreed to pay $687 million to resolve the trustee's lawsuit that followed from the Madoff frauds.