Caltech seems to be considerably less Jewish than Harvard. Caltech is about 3x as Jewish as the general 18-21 population. Harvard is around 14x as Jewish as the general 18-21 population.

I'm getting this from a chart about halfway down the the following very long article [1]. (Note: I have not read that article. I just searched for info on Jewish enrollment at colleges, and found that chart).

[1] https://www.theamericanconservative.com/articles/the-myth-of...