Onyx Rally Powers Biotech ETFs

ETF Trends

A rally of more than 50% in shares Onyx Pharmaceuticals (ONXX) on Monday boosted biotech ETFs, the best-performing sector in early trading.

Onyx shares soared after the company spurned a takeover bid from Amgen (AMGN).

The company said the $120-a-share cash offer “significantly undervalued Onyx and its prospects.” However, Onyx has authorized its financial advisor to contact potential acquirers.

Onyx is a top-10 holding in Market Vectors Biotech ETF (BBH) at 4.5% of the portfolio.

BBH was the largest gainer among unleveraged ETFs on Monday morning with a gain of more than 6%. Biotech has been a leading sector recently. BBH was up 28% year to date through the end of June to more than double the return of the S&P 500. [Biotech ETF Rallies as Cash Tumbles In]

ProShares Ultra Nasdaq Biotechnology (BIB), a leveraged fund, rose 9% on Monday.

Other biotech ETFs rallying early Monday included SPDR S&P Biotech (XBI), iShares Biotech (IBB) and PowerShares Dynamic Biotech & Genome (PBE). [Falling Correlations Good for Biotech ETFs]

Market Vectors Biotech ETF

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