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- Hindenburg Research has stepped up its market offensive against Carl Icahn's firm, days after it accused the billionaire of running "Ponzi-like" structures.
- The short seller disclosed on Thursday that it has opened a short position in Icahn Enterprises bonds.
- The move comes as Icahn's firm posted a surprise first-quarter loss, and disclosed that it had been contacted by US prosecutors.
Hindenburg Research stepped up its market offensive against Carl Icahn's business empire, just days after it published a bombshell report accusing the billionaire of running "Ponzi-like" structures.