I don't believe so. The MSF (quant finance track) allows for OPT. From the WUSTL website:
"Q. Why are there a greater number of international students in the Quantitative Finance track vs. the Corporate Finance track?
A. International students can apply to either the Corporate Finance & Investment (MSFC) track or the Quantitative Finance (MSFQ) track of Olin's MSF program. There are several reasons why international students are attracted to our MSFQ track. The MSFQ track is longer (three semesters, while the MSFC is only a summer and two semesters) and therefore students need to be able to engage in a search for full-time employment almost immediately upon arriving at Olin. This is difficult to do for any student, and may be especially difficult for international students who are new to the United States. International students are also attracted to the MSFQ track because of the opportunity to pursue an internship between the 2nd and 3rd semesters, and the longer duration of time they are able to spend in the US to experience a new culture. The MSFQ track is also STEM-designated which allows students to extend their OPT up to an additional 17 months beyond the regular 12-month period for a total of 29 months. Finally, our international applicants tend to have broad exposure to highly quantitative coursework, making a quantitative program an attractive option. That being said, if you are an international student, you should apply to the track that is of greatest interest to you. "
https://www.olin.wustl.edu/EN-US/academic-programs/specialized-masters-programs/MS-finance/Pages/FAQs.aspx