Nelson Peltz's Trian Fund Management has bought up a big stake in DuPont.
But when asked for details about the stake in DuPont at CNBC's Delivering Alpha conference, he declined to speak more about it.
David Grogan | CNBC
"You asked me in the green room about 10 minutes ago: 'If you say DuPont, what comes to mind." Remember what I told you? I said: 'Paint.' That's all you're going to get today," Peltz said.
Shares of DuPont closed up 5.3 percent at $57.25.
