Investing in rubber continues to expand in 2021 and has steady growth, shares DHS Holdings in his private equity portfolio. Corporations who want to invest in rubber can put up a huge amount of capital or cash to fund rubber processing. But for average investors who want to get some portfolio exposure to financial gains in the rubber industry, they can look at investment products in the securities market, such as commodities, stocks or futures. A single trader can buy the shares of companies that work in the rubber industry or trade rubber commodities on the futures market.