The investment seeks to provide current income. Under normal circumstances, the fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in preferred securities.

Ribonuclease L (RNase-L) is an endoribonuclease well known for its roles in innate immunity. Recently it has been shown to regulate several cellular functions by modulating the levels of specific ...

* Calculated with Portfolio123 from 07/17/2017. PREF has the lowest risk measured in volatility and maximum drawdown, and its expense ratio is average compared to peers. However, it has the lowest ...

* from 07/17/2017 Data: Seeking Alpha, Portfolio123. PREF has the lowest turnover in this list, the lowest risk measured in volatility and maximum drawdown, and its expense ratio is reasonable ...

Respiratory syncytial virus (RSV) can cause substantial morbidity and mortality among older adults. An mRNA-based RSV vaccine, mRNA-1345, encoding the stabilized RSV prefusion F glycoprotein, is under ...

Respiratory syncytial virus (RSV) can cause serious lower respiratory tract disease in older adults, but no licensed RSV vaccine currently exists. An adenovirus serotype 26 RSV vector encoding a ...