The best thing a public company can do with excess cash is repurchase stock when it trades below intrinsic value, but the worst thing is to repurchase stock when it trades above intrinsic value. Most companies do the latter.

The best thing a public company can do is repurchase stock when it's trading below intrinsic value—but the worst thing is to repurchase stock when it's trading above it, which happens far too often because of executive compensation incentives.

The best thing a public company can do with cash is buy back stock when it trades below intrinsic value. Everything else is just noise.