| Firm |
| Barclays Capital |
| BMO Capital Markets |
| CastleOak Securities, LP |
| Citigroup Global Markets, Inc. |
| Deutsche Bank |
| Drexel Hamilton, LLC |
| Fifth Third Securities, Inc. |
| FTN Capital Markets |
| Great Pacific Securities |
| HSBC Securities (USA) Inc. |
| Jefferies & Company |
| JP Morgan |
| KeyBank |
| Loop Capital Markets |
| Merrill Lynch, Pierce, Fenner & Smith |
| Mesirow Financial, Inc. |
| Mischler Financial Group |
| Mizuho Securities USA Inc. |
| Morgan Stanley |
| Northern Trust Company |
| Piper Jaffray |
| Raymond James |
| RBC Dain Rauscher |
| RBS Securities, Inc. |
| Robert W. Baird & Co., Inc. |
| Stifel Nicolaus & Co. |
| SunTrust Robinson Humphrey |
| SWS Securities, Inc. |
| UBS Financial Services |
| Vining Sparks |
| Wells Fargo |