Ariad Plunges After FDA Places Trials of Inclusig on Hold

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Ariad Pharmaceuticals Inc. tumbled the most ever after U.S. regulators placed a hold on enrollment in all trials of the company’s approved cancer drug Iclusig because of blood clots among participants.

Ariad dropped 66 percent to $5.83 in the biggest decline since the shares started trading publicly in 1994. The company has declined 70 percent this year.