Stock market says 5 stocks went up for every 6 that went down. If 750 went down, how many stocks went up?

Let's denote the number of stocks that went up as x .
Given that 5 stocks went up for every 6 that went down, we can set up the following proportion:
\frac{x}{750} = \frac{5}{6}
Cross multiply to solve for x :
6x = 750 \times 5
6x = 3750
x = \frac{3750}{6}
x = 625

Therefore, 625 stocks went up.
$\boxed{625}$ stocks went up.