FWIW, this is a direct quote from the Optima website:
"The wound cell technology of OPTIMA® Batteries was first used in 1969 for the US space programme to power the Lunar Rover. In 1972 this technology was bought by Gates Rubber, and in 1983 the firm began to develop it for automotive applications. The Gylling Group of Scandinavia bought OPTIMA® in 1994, opening a factory a year later in Colorado. In 2000 OPTIMA® was acquired by Johnson Controls. In 2007 JCI laid the foundation stone for a new production site in Monterrey, Mexico, enabling it to keep pace with global demand."
My 90AH Yellow Top Optima battery was made in Aurora, Colorado, when the Gylling Group of Scandinavia owned Optima. This particular Optima battery was only available on the retail market a few months before the U.S. military bought up all production of it. Note that you cannot find a 90AH Yellow Top in the stores. I was maybe "lucky" to find it in an auto parts store, but (dumbly) paid too high a price for it - over $250 - back when $250 wasn't yet just inflated paper.