The performance is on the radar of money managers and investors alike, but take note that biotech is not completely in the clear yet. Venture capital will become more discerning and wherever it invests this money, larger ownership interests are going to be desirable.
Beware, though: BBH is a concentrated fund, with only 12 holdings. The top three holdings are making up about 80% of the ETF, so the approach is focused, and it is not the most cost-efficient fund around. The top holdings are Genetech (DNA), Affymetrix (AFFX), and Gilead Sciences (GILD).
A more diversified biotech ETF is the SPDR S&P Biotech (XBI), which is down 9.7% year-to-date. There are 22 holdings, with most weighted between 4%-5% of the fund.