Outspoken activist investors Carl Icahn and Bill Ackman are putting their decade-long feud behind them, reports Business Insider.

The two have been enemies since 2003, when a stock deal between the pair went sour. The animosity continued as each would publicly criticize the other’s deals. In particular, they got into a live shouting match on CNBC over supplement company Herbalife in 2012, says BI.

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The acrimony dissolved last week when Ichan defended Ackman on CNBC over an investment Ichan made in the pharmaceutical sector, BI says. After that, Ackman called Ichan and told him he forgave him for his role in the 2003 deal.

Now the pair may even team up on future deals.

Read more here.

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