The exact formula of Coca - Cola 's natural flavorings (but not its other ingredients, which are listed on the side of the bottle or can) is a trade secret. The original copy of the formula was held in SunTrust Bank 's main vault in Atlanta for 86 years. Its predecessor, the Trust Company, was the underwriter for the Coca - Cola Company 's initial public offering in 1919. On December 8, 2011, the original secret formula was moved from the vault at SunTrust Banks to a new vault containing the formula which will be on display for visitors to its World of Coca - Cola museum in downtown Atlanta.
when did coca cola became a public company
1919