| Robert W. Baird & Co. Incorporated |
Johnston, Lemon & Co., Incorporated |
| William Blair & Company, LLC |
Keefe, Bruyette & Woods, Inc. |
| Harold C. Brown & Co., LLC |
D.M. Kelly & Company |
| Cadaret, Grant & Co., Inc. |
Morgan Keegan & Company, Inc. |
| Canadian Imperial Bank of Commerce |
Natexis Bleichroeder Inc. |
| Capital Institutional Services, Inc. |
Needham & Company, Inc. |
| City Securities Corporation |
NorthStar Financial Services Group, LLC |
| CNBS, LLC |
Northwestern Mutual Investment Services, LLC |
| Commercebank Investment
Service, Inc. |
Pershing LLC |
| D. A. Davidson & Co. |
Piper Jaffray Companies |
| Deltec Asset Management LLC |
Raymond James Financial, Inc. |
| Depository Trust & Clearing Corporation |
RBS Greenwich Capital |
| A.G. Edwards, Inc. |
Roth Capital Partners, LLC |
| Ferris, Baker Watts, Incorporated |
Ryan Beck & Co., Inc. |
| Fimat USA, Inc. |
Sanders Morris Harris, Inc. |
| First Southwest Company |
The Charles Schwab Corporation |
| Fiserv Securities, Inc. |
Scottrade, Inc. |
| Garban LLC |
Securities Investor Protection Corporation |
| Gilman & Ciocia, Inc. |
Signal Hill Capital Group LLC |
| Haywood Securities (USA) Inc. |
Smith Hayes Financial Services Corporation |
| Hazlett, Burt & Watson, Inc. |
Southwest Securities, Inc. |
| Howe Barnes Investments, Inc. |
Stephens Inc. |
| Investec (US) Incorporated |
Stifel, Nicolaus & Company, Incorporated |
| Janney Montgomery Scott LLC |
T. Rowe Price Investment Services, Inc. |
| Edward Jones |
Tocqueville Asset Management LP |
| |
UNX, Inc. |
