From Spock and Members

https://spockm.com/2016/09/20/closed-2-positions-today/

We’re buying down the value chain. NMI and MUX were and are probably great companies, but they’re on the open seas now (in the ETFs) and their stock is subject to additional forces beyond their control. The way I see it, we’re buying minnows and holding them until they’re big enough to swim in the ocean. That’s the best growth profile, even if it’s not nearly as fast and predictable as the growth of fish.

Good analogy!

…and once they get big enough to start swimming in the ocean the sharks come after them. I think this is sensible way to remove a little more risk from the portfolio.