iShares Core US Aggregate Bond ETF (AGG) NYSEArca - NYSEArca Delayed Price. Currency in USD. We discuss whether it will be prudent to buy bond ETFs given the edgy global political scenario. Zacks. Aggregate Bond & Gold Bullion: 2 ETFs to Watch on Outsized Volume. ETFs Tracking The Barclays Capital U.S. Aggregate Bond Index – ETF Holdings. The following table presents holdings data for all ETFs tracking the Barclays Capital U.S. Aggregate Bond Index. For more detailed holdings data for an ETF click the ‘View’ link in the right column. The Bloomberg Barclays US Aggregate Bond Index, or the Agg, is a broad base, market capitalization-weighted bond market index representing intermediate term investment grade bonds traded in the United States. Investors frequently use the index as a stand-in for measuring the performance of the US bond market.