2 years out of uniform, Clearance status

Former Military Officer, retired June 2023. Retired with Secret Clearance and formerly held TS/SCI.

My understanding is that since I have been out of uniform for two years, my Secret clearance has now moved beyond inactive to expired. Thus, I would require a new investigation to re-obtain a clearance of any level and that process would be started by an agency that is wanting to sponsor me for a specific position.

Is that understanding accurate?