From what I see online, Oklahoma State Athletics generally breaks even (2023: made $122 million, spent $121 million).
Student fees do support athletics:
"Some of the OSU student fees to go renovations in the Athletic Department. Student Activity Fee, Athletic $5.50 Implemented in 1997, with an extension supported by SGA in 2004, revenue from this fee is dedicated to various bond issues for Athletic Department renovations (e.g. Gallagher-Iba Arena and Boone Pickens Stadium)."
Tuition & Fees information for Oklahoma State University.
bursar.okstate.edu
The Athletic Department received state money after Covid.
Oklahoma State athletics received a one-time $12,934,006 institutional support payment in the 2021-2022 fiscal year from the university. This funding helped the department recover from a $14.2 million loss during the COVID-impacted 2020-2021 fiscal year.
Oklahoma State athletics has seen its annual budget increase from less than $90 million to over $100 million in just a few years' time
www.oklahoman.com