Indeed, you are right on: Legent, Platinum, CA, and Broadcom in order from little fish to big. CA was the second largest software company in the world behind Microsoft then.
The weird part you couldn't see from this telling is that I worked in the Legent office in Pittsburgh, moved to Boston post-CA acquisition and worked in the CA office in Andover. Resigned and went to Platinum in Burlington. Moved to Seattle. Second CA acquisition in 5 years. I should have quit while I was ahead. Moved back to Pittsburgh. Worked in the exact same office I'd worked in 5 years earlier with the same crew. Weird feeling is a mild understatement. I still know people who work for Broadcom now. I should reach out.