After a short hiatus, exchange-traded fund (ETF-s) issuers were back at it this week. Several products were launched, including a hefty dose of socially responsible funds. Building a portfolio around your conscience and ethics has become a popular theme for investors over the last few years as returns in the sector have caught up to expectations. And fund providers have been more than happy to oblige with new ways to do so. This week, investors added four new funds to do just that.