Four non-leveraged ETFs hit fresh all-time highs Thursday.  The RevenueShares Ultra Dividend Fund (NYSEArca: RDIV) was on that list, but RDIV is not even two weeks old.

Still, RDIV may be worth keeping an eye on. It is the first revenue weighted ETF. RDIV’s “index is weighted by top-line company revenue to emphasize constituents with high current yields that can be expected to drive price appreciation and dividend growth. RDIV is diversified among growth and income-oriented market sectors, as well as among large- and mid-cap companies,” according to a statement from RevenueShares issued last week when the ETF debuted. [A New Spin on Dividend ETFs]

For now, examine these three all-time high ETFs with a comment on each.

AlphaClone Alternative Alpha ETF (NYSEArca: ALFA)

Comment: Hedge fund legends and financiers such as Carl Icahn, David Einhorn and George Soros are getting more press than ever these days. Perhaps that is prompting more investors  to want to “invest like insert hedge fund scion name here.”  Whatever the reason, ALFA is up 22% this year.  Top holdings include Twenty-First Century Fox (NasdaqGM: FOXA), American International Group (NYSE: AIG) and Citigroup (NYSE: C).