Benzinga's Top Downgrades (AFFX, ESRX, NOK, ZMH)

Affymetrix Inc

was downgraded by Piper Jaffray from “overweight” to "neutral." AFFX's shares closed at $4.82 on Friday. Affymetrix's quarterly earnings plunged 175.60% y/y. Goldman downgraded Express Scripts Inc

from "buy" to "neutral." ESRX's shares closed at $49.60 on Friday. Express Scripts' 52-week trading range is $37.50-$54.00. Nokia Corporation

was downgraded by Bernstein from "market perform" to "underperform." NOK's shares closed at $10.06 on Friday. Nokia's earnings are likely to drop by 77.30% this year. Analysts at Goldman downgraded Zimmer Holdings Inc

from "buy" to "neutral." ZMH's shares closed at $51.81 on Friday. Zimmer's quarterly earnings dip 16.38% y/y.