Some securities I own are illiquid. A few are very illiquid. When I wrote for theStreet.com, we had a warning that we posted for every security mentioned where the market cap was less than half a billion dollars, because what we wrote could budge the market, and sometimes it did. I remember when I wrote a post about personal lines P&C insurers, and I mentioned Safety Insurance (NASDAQ:SAFT), which was definitely small, as one of the companies that I thought was worth owning, and we did own it at the firm that I worked for. The stock popped about 5% before settling down.

But frenzies to buy are usually tame compared with frenzies to sell. There is an urgency to preserving value that makes the seller particularly zealous in getting out rapidly.

In the last three weeks, I’ve experienced this twice with two securities that I own. In both cases I bought more as the seller got aggressive. Let me show you what happened.

Image Credit: Aleph Blog

This is a graph of National Western Life Insurance (NWLI) over the last three weeks. It’s my largest holding in one of my strategies. On September 23rd, near the close, an aggressive seller, on no news, sold a large block of stock, driving down the price temporarily. I was one of those buying from him, but by no means the biggest buyer.

Image Credit: Aleph Blog

Then there is TCW Strategic Income Fund (NYSE:TSI), which is the second-largest holding as bond funds go for my clients, behind PIMCO Enhanced Short Maturity Active ETF (NYSEARCA:MINT), which I use for liquidity. Yesterday, someone was aggressively selling until 2PM or so, and then they seemed to be done. They may have been selling for three days prior to that. In this