Looking at all 3 companies over the last 4 trading days it appears the market is trying to determine how a failed merger will effect each company.  Even with todays big drop AvenEx is faring the best   I  think you will see PCE and AVF share pricse move back up once the shackles are off.  (todays prices prior to close)

Date

Close

Volume

Chg

% Chg

 

4 day Chg

2/26/2013

2.25

108,898

-0.09

-3.85%

AVF

-0.44%

 

2.79

33,286

-0.02

-0.71%

PCE

-1.79%

 

0.29

363,172

0.015

5.45%

CHX

-10.34%

2/25/2013

2.34

265,255

-0.01

-0.43%

AVF

 

 

2.81

30,513

-0.16

-5.39%

PCE

 

 

0.275

725,555

-0.03

-9.84%

CHX

 

2/22/2013

2.35

117,840

0.09

3.98%

AVF

 

 

2.97

70,554

0.13

4.58%

PCE

 

 

0.305

264,044

-0.015

-4.69%

CHX

 

2/21/2013

2.26

153,134

0.02

0.89%

AVF

 

 

2.84

45,163

-0.05

-1.73%

PCE

 

 

0.32

78,495

-0.015

-4.48%

CHX