BGRN targets USD-denominated bonds that align with MSCIs Green Bond Principles. Qualifying bonds must be issued to fund projects in one of six categories: alternative energy, energy efficiency, pollution prevention and control, sustainable water, green building, and climate adaption. Additionally, bond issuers must maintain processes for evaluating and selecting green projects, managing proceeds, and reporting environmental impact. BGRN may still hold bonds that dont meet all the criteria if they were issued before 2014 and have been widely accepted as green, as determined by the index committee. BGRNs selection pool includes both government and corporate issuers from developed and emerging markets. Holdings may be of any term and are generally held to maturity. BGRNs portfolio is weighted by market value and is rebalanced monthly.