I give the Invesco WilderHill Clean Energy ETF (NYSEARCA: PBW ) a hold rating. The fund’s focus on small cap companies comes with a high level of risk, and the fund’s returns are highly volatile. Of course, sources of strong upside can beI am a dynamic finance professional with a Master’s in Banking & Finance from Université Paris 1 Panthéon-Sorbonne. My investing background mix corporate finance, M&A, and investment analysis, with a focus on real estate, renewable energy, and equity markets. I specialize i ...