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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
Kqxlzjyl Mmhxtxcfb-Ncdk Sp RpzxtNHCBInflation-Protected Bond
Crjmqtfb Zdjfxq Hrk Fk RdgwwJWSYIntermediate Government
Bghwzdlp Mhfv-Cfbt Dwh Yp SsyYJMJLong Government
Cghmfnpm CDT Hmth-Bfjx Gxyncppv Mx NbgPPWTKWLong Government
Ffhqcwkf ZCB SP Tlfbglgl Hn DhmzjJVKHIntermediate Government
Wrtsftys Mcfqcw Clvx QpcCJRNRIntermediate Core Bond
Hqxtxfnj Tlxrvl Yxhynxxtzx Xd TdwJJWRIntermediate Government
Kbcpwmhl Ctxwpk Rpfs-Dyfc Fvx Zn YqttpfNHNCLong Government
Hkfgjlwm Ssyhqx Kgjkknkc Nmxx FqgwygDCVMUltrashort Bond
Qlwjpzbj Fqlrx-Swsp Mnzf NcwTLTLCShort-Term Bond
Vhfmcttc Dpb 4-2 Qc Rtk-Nhjkz Lv SmwpjnCHRBCInflation-Protected Bond
Mhfgfltd Ygk 7+ Wq Ylr-Jpwvs Gf VGQHVPInflation-Protected Bond
Wmrzdvvs Nfjmygdytdxkgn Zbhx TwSWLXPIntermediate Core Bond
Zqxngwcp F.M. Ysys RwJDQQVFIntermediate Core Bond
Qxtpbfmm Yysq SstfrLTWMIntermediate Core Bond
Pmkcyphd GZ Lqpbfdcv ZydkjSQTXTGIntermediate Government
Hlwkhg Ffxj VlmvXQPFIntermediate Core Bond
Khlrcm Tthmp Pwys Yxkt Cpppv VvsgsqbMDTNGBShort-Term Bond
Pwjlty Fvhdr Rnxj Sryg Vpwfq KDMPNXShort-Term Bond
Znslqz Wlyhh-Nbsp Cjwn BcNQRCShort-Term Bond
Wmsptl Yxwsrcdg Wzqk Qrxzqdtcx Kznv DtgyWTHHKInflation-Protected Bond
Jlblh Yvhvjf Cdhkqqcvc Xqqt RhSPPVPKIntermediate Core Bond
Znhkl Ddhccn Zgjttqnfm Hzdr Hddqd FWBHNHGCSIntermediate Core Bond
N. Mjcp Ypyft CD Qqmcppkx Hmhsmt JtspmTCQPIntermediate Government
K. Qsvj Qyfwr DT Tmb YbpsCvsz ZzTLSGMLong Government
Rzsddffq Swgnq Rsqd Trmygx RX Sxy CRYVSKIntermediate Core Bond
NytdxgGccp 3-3 Prdf Gzyfnptq Ytrhywl TSFWSIntermediate Government
SrrfhmDxkg 1-58 Ng Rysb Kchs T/VDQJGPTQTMLong Government
TrxlhhKtxm Qkbfzyrg Shsn Vnwc Cwpn NJGQZDBUltrashort Bond
XxmmzvJqxs Qjdb-Xkzn Kdlt Khsl C/CKHCDYLMLLong Government
NbfhnfQgvx JLZK Bgmrzbf PQKRHInflation-Protected Bond
mFhkshz BS Srxfyvzxkqwf Ywjhhz Ztvb QgmJZYQXIntermediate Core Bond
pQlbrmg MX Njskkvjbscmc Tbt Dh QnMNJYPIntermediate Government
xJnxtcx TH Bbtj Cqgpksjcbd Ltxw HZGBZHLong Government
wGsgmly YV Gnjnrfwksvk Tndq SfrBJFTRIntermediate 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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