Sustainability is the next frontier of activist investing.

"On January 6, 2017, JANA Partners, a New York–based activist hedge fund, and the California State Teachers’ Retirement System (CalSTRS) sent a letter to Apple’s board of directors that may change the future of activist investing. Citing a substantial body of expert research, the letter stated, “We believe there is a clear need for Apple to offer parents more choices and tools to help them ensure that young consumers are using your products in an optimal manner.” Overuse of iPhones by children and teenagers, the letter pointed out, has been linked to lack of attention in the classroom, difficulty in empathizing with others, depression, sleep deprivation, and a higher risk of suicide.

Jana and CalSTRS together own $2...

Sustainability is the next frontier of activist investing.

"On January 6, 2017, JANA Partners, a New York–based activist hedge fund, and the California State Teachers’ Retirement System (CalSTRS) sent a letter to Apple’s board of directors that may change the future of activist investing. Citing a substantial body of expert research, the letter stated, “We believe there is a clear need for Apple to offer parents more choices and tools to help them ensure that young consumers are using your products in an optimal manner.” Overuse of iPhones by children and teenagers, the letter pointed out, has been linked to lack of attention in the classroom, difficulty in empathizing with others, depression, sleep deprivation, and a higher risk of suicide.

Jana and CalSTRS together own $2 billion in Apple stock, so it’s no surprise that the letter received worldwide attention after it was publicized by the Wall Street Journal...