Nat­era shares tum­ble af­ter short-sell­er al­leges de­cep­tive billing prac­tices — and pos­si­bly in­sur­ance fraud

Hin­den­burg Re­search — the short-sell­er firm that writes ex­posé re­ports every so of­ten, as in the case of Sor­ren­to Ther­a­peu­tics in 2020 — went af­ter ge­net­ics test­ing …

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