| Symbol | Name | Country | Exchange |
|---|---|---|---|
| DTW | DTE Energy Company 2017 Series E 5.25% Junior Subordinated Debentures due 2077 | US | NYSE |
| E | ENI S.p.A. | US | NYSE |
| ENBA | Enbridge Inc 6.375% Fixed-to-Floating Rate Subordinated Notes Series 2018-B due 2078 | US | NYSE |
| LNG | Cheniere Energy, Inc. | US | AMEX |
| PDCE | PDC Energy, Inc. | US | NASDAQ |
| PSX | Phillips 66 | US | NYSE |
| SOJC | Southern Company (The) Series 2017B 5.25% Junior Subordinated Notes due December 1, 2077 | US | NYSE |
| SR | Spire Inc. | US | NYSE |
| PTCH | Petrochemical | IL | TA |