New highs were scarce Friday as the Nasdaq suffered a weekly decline of nearly 7%. But a few small caps managed to buck Friday’s sell-off. BioTelemetry (BEAT) rose 0.59, or 4.5%, to a six-year high of 13.69 in above-average volume. The stock is well extended past an 11.43 buy point of a long cup-with-handle base it cleared in mid-July.