Why Shares of iBio, Marinus Pharmaceuticals, and Arcturus Therapeutics All Crashed on Tuesday

On Tuesday, shares of up-and-coming biotechs Marinus Pharmaceuticals (NASDAQ: MRNS), iBio (NYSEMKT: IBIO), and Arcturus Therapeutics Holdings (NASDAQ: ARCT) fell by 12%, 13%, and 19%, respectively.

One common catalyst seems to be the secondary-share issues announced by all three companies, although another important factor may be at play.

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Source Fool.com