With the S&P 500 inching to new highs, it’s no wonder that equities are seeing the majority of fund flows in Vanguard’s ETF suite, but a pair of bond funds are also receiving strong flows year-to-date. As part of the top five in fund flows YTD, bond funds like the  Vanguard Total Bond Market Index Fund ETF Shares (BND)  and the Vanguard Short-Term Bond Index Fund ETF Shares (BSV) are making the cut.