Wall Street falls after strong week; Pfizer and Allergan drag

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Allergan Inc (NYSE: AGN) Delayed: 193.02 --0 (-0%)
Previous Close $193.02    52 Week High $322.68 
Open $15.33    52 Week Low $186.34 
Day High $193.02    P/E 45.96 
Day Low $193.02    EPS $4.20 
Volume 43,377       

Pfizer Inc. (NYSE: PFE) Delayed: 27.91 +0.17 (0.61%)
Previous Close $27.74    52 Week High $37.39 
Open $27.74    52 Week Low $28.25 
Day High $27.92    P/E 16.92 
Day Low $27.49    EPS $1.65 
Volume 6,587,290       

Tyson Foods (NYSE: TSN) Delayed: 52.24 +0.22 (0.42%)
Previous Close $52.02    52 Week High $77.05 
Open $52.21    52 Week Low $42.90 
Day High $52.71    P/E 22.04 
Day Low $52.16    EPS $2.37 
Volume 399,876