Class of 2019 yield rate

So I was doin my research and I noticed that on Brown’s page they said they admitted 2,857 for the class of 2019. Originally, they only admitted 2,580 after RD selections. The overall rate came out to 9.5% as compared to the 8.4% when RD decisions came out-- does that mean Brown admitted over 277 kids from the wait-list? Damn…

Thoughts? Is this a poor reflection on Brown? Yield rate was comparatively lower this year.

http://www.brown.edu/admission/undergraduate/explore/admission-facts (scroll all the way)

https://news.brown.edu/articles/2015/03/admission