Black Swan events are evidence of what property of market returns?

Stock returns have high kurtosis

Stock returns are normally distributed

Stock returns have excessive right skew

Stock returns are highly platykurtic

Which of the following is true regarding convexity?

The higher the bonds convexity the lower the yields on that bond, everything else equal

Portfolio managers can increase bonds convexity relatively easily

Negative convexity is preferred to positive convexity

The more negatively convex the bond, the better for investors