Its most recent increase involved biotechnology stocks in the early 1990's.
Of that, we took a new 6 percent position in biotechnology stocks.
A second big biotechnology stock was also making news yesterday, but it rose.
But it then fell back, along with many other biotechnology stocks.
The move is expected to provide a lift to biotechnology stocks.
Biotechnology stocks, which have been among the market's leaders so far this year, turned in a mixed performance.
Yesterday was a wild day in other biotechnology stocks as well.
Indeed, biotechnology stocks have rallied with the rest of the market in recent weeks.
Biotechnology stocks helped lead the decline in the technology sector.
He said biotechnology stocks were still above their lows of 1998, so they could have further to fall.