(Bloomberg) -- Welcome to the era of ETF mashups, whose issuers act like Dr. Frankenstein and combine popular strategies hoping the result will be greater than the sum of its parts.

Maybe such creativity is expected when there are more than 1,700 ETFs and basically everything under the sun has already been ETF-ized. The question is: Do mashups offer an exciting new investing opportunity or just create financial mush? Here is a look at a few of the more promising FrankenETFs:

Register or login for access to this item and much more

All Financial Planning content is archived after seven days.

Community members receive:
  • All recent and archived articles
  • Conference offers and updates
  • A full menu of enewsletter options
  • Web seminars, white papers, ebooks

Don't have an account? Register for Free Unlimited Access