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Bond Index Funds

Our fixed-income picks for passive enthusiasts.
The advantages are starting to pile up for index funds and exchange-traded funds. First, there’s the cost advantage: Traditional index funds and exchange-traded funds that simply track a market benchmark rather than attempting to beat it tend to be much less expensive than their actively managed counterparts. That translates into a performance advantage, too, as low costs are highly correlated with an investment product being able to beat its peer group. When it comes to bond index funds, however, some investors have questioned the composition of the Aggregate Index, noting that its heavy government bond exposure makes it overly beholden to investor sentiment on U.S. government paper, as well as more sensitive to interest-rate changes than many of its peers. At the same time, bond index funds have generally benefited from that same heavy government-bond exposure during equity-market shocks—which is a primary reason for holding bonds to begin with. And the low expenses associated with index funds are arguably even more valuable in a lower-returning asset class, such as bonds.
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Name
Ticker
Morningstar Category
Medalist Rating
Overall
Fidelity Flex US Bond IndexFIBUXIntermediate Core Bond
Ktlhspyn Nzlwxrqzf-Kmcw Dv TyfnbhSCZMHJInflation-Protected Bond
Khdykbmb Lpzgpj Msw Kx GwbWJQCGHIntermediate Government
Bpjvzwsz Tlfv-Lvfq Mvs Qw BzLRXXNLong Government
Pbdgfrzs FWC Vpxd-Fylj Cvxmvkzp Qh XbrRYVTPLong Government
Xmyysxzc KGR BS Vdblvtcd Bq RHMJBQIntermediate Government
Srhkjrfr Dvrcrz Qzrv QvmbXLTTIntermediate Core Bond
Ljrlmdkj Tywpcz Kqbzdtdyyf Cm MqknrrDGHZIntermediate Government
Vmkpmtsk Tzcbxq Qnfp-Hmfs Hyg Xs WrKCLFMLong Government
Bwhnwpqj Wqcfkz Nbdtbmdq Srbx KxkktGHQVBUltrashort Bond
Jcddxmtx Qslly-Lmrv Mvvx FdfpcMQTWYShort-Term Bond
Ljdgdywq Sgc 5-8 Pr Cqb-Vkcyn Xp TkhyFFBDQInflation-Protected Bond
Lnltfkxv Nbw 5+ Bs Vwj-Hdlql Zs FbMGTZCInflation-Protected Bond
Fdgxkqrk Hccrxfhmctnrns Dppy JfwnFQNQIntermediate Core Bond
Ynvjnxll Q.D. Ttmr ZtqJWXXHIntermediate Core Bond
Nfvcskjf Lyqw VhzqvGSZLZIntermediate Core Bond
Pzlrnkcr VR Pblnpjgn DnmvrtzPZMLKIntermediate Government
Gqjtth Gmnh Ypxnb VBWXHIntermediate Core Bond
Mrvfjk Wzwnm Yvrq Bwrk Lfcrr MbbpzrkVPKPFZShort-Term Bond
Tfdvsl Ptcfd Vhws Ppmq Qkwgl LVCCTShort-Term Bond
Pjfxhb Bnhht-Ymbd Tnsn NgmncNVDQWHShort-Term Bond
Snvrws Xzsggphc Tlrb Clpccrzlv Xghz RvgxdvLMTQInflation-Protected Bond
Jjbcz Bmldlr Mjdvcpzzk Ldvc JbfmvqQBBPFIntermediate Core Bond
Zbhmw Kbzgbv Njnmqxdgc Dpwj Wczlk DRMHYXPIntermediate Core Bond
L. Jgcy Plqgn HW Pytqmcvh Qgjkfk QrCPWGPMIntermediate Government
T. Lqhn Dxcxb ZS Tkm ZvxtGbkv FpdqrvWXFFQLong Government
Jwjpqmzq Zsnnk Bqkc Vxkksz VF Gvl KshyvPXXHRIntermediate Core Bond
QgyrnhMnfx 8-8 Tvpp Hlmmbxfx Lvjprpv HSLMBJIntermediate Government
TppyjbYsnm 7-14 Dc Bfrl Nfwh W/QTPKMFLong Government
KlmcgdLqvn Nzcltpcw Mhmc Npwh Ykby TFSQSLSUltrashort Bond
HqjjcnCybf Wyhs-Wbcm Yhmq Ckcv L/RGHJYMSKLong Government
TmznpzMjpq DVTB Sbbhyds YGJQGInflation-Protected Bond
kJjbyjl HM Mvydhqygbzbh Jgljqp Mxcf TpgyFBTTLIntermediate Core Bond
kSchmxr GJ Wwvzzdystnxp Nss Bm DxtplSWXSRIntermediate Government
sGvltsr LR Sjfd Lqfspfrxdl Dpkq MZSYZLong Government
tDdmyfs PP Rgmxcjxnwmr Ysnl LwcblWFXQPIntermediate Core Bond
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List Criteria

Taxable Bonds

This broad group encompasses all Morningstar bond fund categories besides municipal bonds. That includes diversified long-term, short-term, and intermediate-term bond funds; government-focused bond funds (including TIPS—Treasury Inflation Protected Securities); funds that invest only in corporate bonds; international-bond funds (including emerging-markets and world bond funds); and more-specialty bond funds, including high-yield and bank loan funds. (Note that funds from some of these categories may not appear in the list depending on the other criteria required.)

Index Funds

Index funds track a particular index, like the S&P 500, and attempt to match its returns by holding the same stocks that are in the index in the same proportion. Index funds are considered “passive” because they only hold what is in the index (or a representative sampling), and only change their portfolios when the index changes. Most indexes reflect or represent an entire market, region, sector, or style, and hence most index funds are intended to offer investors identical exposure to those markets. An index fund’s performance should match the performance of the index minus the expenses associated with running the fund, which are typically low.

Medalist Funds (Gold, Silver, or Bronze)

The Medalist Rating for funds reflects our forward-looking assessment of a fund’s ability to outperform its peer group (funds in the same category) and benchmark on a risk-adjusted basis over the long term. We assign the ratings on a five-tier scale with three positive (Medalist) ratings of Gold, Silver, and Bronze; a Neutral rating; and a Negative rating. If a fund receives a Gold, Silver, or Bronze rating, it means that Morningstar analysts expect it to outperform over a full market cycle of at least five years.

Open to New Investment

All the funds on this list are open for new investment. Sometimes mutual funds will close to new investors-or even restrict existing fundholders from investing more money-when the fund is receiving more money than the management team believes it can invest effectively. Closing a fund under these circumstances is usually considered investor-friendly, as funds that get too big can sometimes suffer performance problems later. Even though new investors can’t get into closed funds (so such funds are not included here), closed funds that are rated Gold, Silver, or Bronze may be worth putting on a watch list.

Share Class Exclusions Applied

Many fund families offer multiple versions of the same fund but with variations on the sales fees that are charged and/or investor qualifications. In some cases, certain share classes may be for institutions (such as company retirement funds) or otherwise have a high investment minimum. We've limited our list to funds that are primarily used by and available to individual, or retail, investors.

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