By most measures, Charles Schwab’s venture into the ETF space is off to a pretty good start; at the end of March, Schwab’s eight ETFs had aggregate assets of more than $950 million. All of the San Francisco-based firm’s existing ETFs track equity indexes, but that could change in coming months. Schwab recently filed details [...] Related Stories: PIMCO Rounds Out Treasury ETFs With ZROZ, FIVZ PIMCO To Launch New Treasury ETFs TIPS From PIMCO: Bond Giant’s Latest ETF Offering