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Vivek Ramaswamy, the hedge fund manager turned biotech entrepreneur, was so confident he could make money from pharma drug castoffs, he named his new venture Roivant Sciences — the “Roi” being shorthand for return on investment.

Turns out, Ramaswamy meant his return on investment. Outside investors in Ramaswamy’s publicly traded “Vant” spinoffs are still waiting for their share.

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In a wide-ranging alliance announced Friday, Roivant is selling its ownership stake in five “Vant” biopharma companies to Japanese pharma Sumitomo Dainippon for $3 billion. The deal also grants Sumitomo an option to acquire six additional Roivant spinout companies, access to Roivant’s technology platforms, and a 10% ownership stake in Roivant.

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