U.S. stocks logged a second consecutive week of gains with all three major U.S. indices gaining more than 2% on the week.

Despite frigid weather across much of the U.S., some exchange traded funds remain hot according to this week’s search data on ETF Trends.

Of the 10 most searched tickers on ETF Trends this week, just two were not related to commodities, dividends or Europe. However, those outliers – the iShares Nasdaq Biotechnology ETF (Nasdaq: IBB) and the PowerShares Buyback Achievers Portfolio (NYSEArca: PKW) – are familiar friends of our top-10 list. Biotech continues to soar and recent talk of PKW possibly becoming home to Apple (NasdaqGM: AAPL) in the coming months prompted high levels of searches for those ETFs this week. [Apple Advances Toward Buyback ETF]

Exchange traded funds backed by physical holdings of gold have been on the receiving end of inflows after bleeding cash last year while silver ETFs are in breakout mode. Said another way, it is not surprising that the PureFunds ISE Junior Silver Small Cap Miners/Explorers ETF (NYSEArca: SILJ) and the Market Vectors Gold Miners ETF (NYSEArca: GDX) were among the most searched ETFs this week. GDX and SILJ are among the best non-leveraged ETFs in 2014. [Seven Mining ETFs to Remember

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