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First to fall over when the atmosphere is less than perfect
Your sensibilities are shaken by the slightest defect
You live you life like a canary in a coalmine
You get so dizzy even walking in a straight line
- Canary in a Coalmine (The Police)

The MoMo stocks walked in a straight line. This is a weekly chart of F5 Networks - a superstar in the rally and one with nary a hiccup like dozens of others.

That is a weekly reversal although the week is not yet over. Down over 11% today alone.