Subject: Re: question on starting position in brk-b
Dollar cost average is a good idea as right now BRK is rather expensive. So not a good point in time to go in big.

That makes some sense.

My suggestion: If you have decided that you are going to do dollar cost averaging, perhaps start out with quite small gradual dribs for now.
Pick up the pace if/when it's cheaper.

The reasoning: there is usually a point during most years that the stock is a much better deal than it is today, so you can buy a whole bunch the next time there is some panic in the market. If it's a really good deal (under 1.3 times book?), forget the DCA and just buy all you want at that time.

Fun with numbers (not to be taken too seriously): if the future resembles the last 16 years, there's a 92% chance that Berkshire will close at a ratio of price to peak-to-date book-per-share of 1.31 or lower in the next year. Emphasis on the "if"!

Jim