Seasoned pros know to expect the unexpected in the financial markets. However, there are times when the expected is just what we get.

That was the case with the most searched tickers on ETF Trends this week. Without the benefit of a fully functional crystal ball, we do not know for certain on Sundays which ETFs will captivate investors during the week. However, as this week unfolded, it became obvious  which ETFs had investors talking.

A common theme among some members of this week’s most searched group is that they also ranked among the top-performing ETFs in 2013. [Some of 2013’s Best Sector ETFs]

That group includes the Global X Social Media Index ETF (NasdaqGS: SOCL). SOCL gained nearly 3.1% for the week and made a new all-time even as top-10 holding Twitter (NYSE: TWTR) endured a four-day losing streak and double-digit plunge. The SOCL/Twitter scenario reminds investors of an important point. If one can handle less upside than an individual story stock delivers, ETFs can offer protection and sometimes profit when those story stocks fall as Twitter did this week. [Social Media ETF Bests Twitter]

Kudos to SOCL for being our most searched ticker and congratulations go out to the AdvisorShares Peritus High Yield ETF (NYSEArca: HYLD) as well. Not only was HYLD named a five-star fund by Morningstar this week, but it was the most searched bond ETF on ETF Trends. Earning the five-star rating means the actively managed HYLD was in the top 10% of high yield bond ETFs and mutual funds. [Actively Managed Junk Bond ETF Wins Five-Star Rating]

The dominant theme among our 10 most searched tickers was health care, specifically biotech.  Four of the seven most searched tickers on ETF Trends this week were healthcare funds, led by the SPDR S&P Biotech ETF (NYSEArca: XBI).

XBI soared in price and Internet prominence for a simple reason, as we were the first to point out: The ETF is the only member of the biotech ETF group to have an allocation, albeit small, to Intercept Pharmaceuticals (NasdaqGM: ICPT). That stock gained a 550% this week, enough to turn XBI’s 1.6% weight to it into a 17.3% pop. [The One ETF Really Getting a Lift from Intercept Pharma]

Not surprisingly, the Direxion Daily Healthcare Bull 3x Shares (NYSEArca: CURE) was the most searched leveraged ETF on the site. Two dividend ETFs, the Vanguard Dividend Appreciation (NYSEArca: VIG) and the Guggenheim Global Dividend Opportunities Index ETF (NYSEArca: LVL), also found spots on our 10 most searched list. [A 6% Yield on an ETF No One Talks About]