The BCW Index returned after skipping a week due to the Thanksgiving holiday with a .3-percent decline. The tracking period included four days of trading rather than the usual five days due to the holiday. Harvard Bioscience led gainers during the week with a 5.2-percent increase, while Waters led decliners with a 2.2-percent drop.

In comparison, the Dow Jones Industrial Average posted a meager gain of .2 percent for the week, while the Nasdaq fell .9 percent, and the Nasdaq Biotech Index dropped 4 percent.

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