11.   Many people who are interested in such securities opt for what is called a unit investment trust.

12.   Moreover, many unanswered questions remain about unit investment trusts, including how the most popular ones will perform in a market downturn.

13.   Q. I read your column involving unit investment trusts.

14.   Schwab calculates that its unit investment trust is substantially cheaper for investors than replicating the Dow-dog strategy on their own.

15.   Since the Vanguard GNMA fund has a very good record of maintaining net asset value over the long haul, I would prefer it to a unit investment trust.

16.   Spiders are unit investment trusts, which do not have a board and are prohibited from using futures and options.

17.   Such unit investment trusts are available through most brokerage houses.

18.   Technically, a spider is a unit investment trust.

19.   The firm is also offering a wider array of investment products, including variable annuities and unit investment trusts.

20.   The leading sponsor of the unit investment trusts, which invest equal amounts in only the Dow dogs, is a consortium of brokers led by Merrill Lynch.