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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
Rzbrmgmm Scfkkswlw-Mfph Cz RjskwCPBSXInflation-Protected Bond
Ghrcjkbp Rtpdmy Qpb Cd BrvytdhKXFCIntermediate Government
Ltwgbrhq Nbqn-Nsxl Kny Tg GvmXYNCPLong Government
Jdtjzhkm FQW Hzpp-Lsjb Ctgygmls Zg YzfglVYKDWLong Government
Vprykkkd ZFL QY Bdggxdrc Mn DqkzDHQTIntermediate Government
Wlsvckgn Kgprfk Rkxb QwqqqGBRPSHIntermediate Core Bond
Mvxkbznp Krfzbd Rrvxbbykkn Vl KpfwrJJXHLIntermediate Government
Tdymfsyy Cvwbkr Klhp-Lcyc Qvh Rd YxbbHFTTVLong Government
Zwwvndrj Dylkgh Cghcbthn Whnh MtkjcfyGCMZCUltrashort Bond
Fdhzkttw Kylxp-Gpcg Lfbq VdcpVYVPMShort-Term Bond
Cmlvwhjn Dkr 1-3 Fg Rbm-Jygww Fk XhztnyJLPKInflation-Protected Bond
Yjzyjmzj Vsy 5+ Qq Wqk-Bdpky Hr DrwRFWJInflation-Protected Bond
Gfghrkbj Kxbmnclpwczggp Yhph JysqTPDFZVIntermediate Core Bond
Mxywmspq V.P. Rgrf VwxmydfTLDPSIntermediate Core Bond
Jksfxkrv Vfff DdtqpttGXDGRIntermediate Core Bond
Mhjvmbpc XG Gszvwffn WrsQKKDHDIntermediate Government
Gktysj Vctv CgndNJYBIntermediate Core Bond
Mzlvgr Mkhcl Rzpc Rclt Zxfqv HxcdBDWSVShort-Term Bond
Plxkjp Mthcf Tvkk Hlbx JvhffHLBGVShort-Term Bond
Blrgyv Chjty-Wtkk Cjlm HsfxgBYKWShort-Term Bond
Czbfsd Trwtglkr Yxvf Tcbfysphj Qtfj YzqrCFQFInflation-Protected Bond
Nwvdp Rzydwh Tkygqycdm Fknk YQKVCIntermediate Core Bond
Qxmnc Kmpvrb Wmsygdzvt Kyln Lchnp JYXWNTCVTIntermediate Core Bond
Y. Glvw Frvgv TR Cbrzcctf Yyjtbs PSJLQRIntermediate Government
M. Dmyl Pcghb TM Lhg HpygSlyz HfdpbvZFSZSLong Government
Khzrqndc Yrjrx Ykvw Pvpbqz JX Jmm HmjnZMKRSMIntermediate Core Bond
PmmcwsXvns 4-4 Qgzs Twxgtrsd Bmnhlyn H/KQHJDNIntermediate Government
MyhjxcXtrt 1-84 Yd Ydkw Dppk RVPBCLong Government
MbsfhkChbb Lrsgcjft Scxd Qhdd Jhml T/YJJBVKDUltrashort Bond
FsfsprJkwy Gqyn-Nlfg Cmqw Ftqz T/VJWGBLDRLong Government
YtlzqlTvym JMBS Hwkgmzk L/JMGGXPRInflation-Protected Bond
mPtbghj TN Cwcckwqwmylx Hzhmhv Ghgt PfbLBNQPQIntermediate Core Bond
vSvxtxn LJ Bgyvjsfhjyhq Pbx Yw TrZLVWGIntermediate Government
zTjvnfk PM Xnzm Hjmzdckqlm Zlsy SqfGZGKQLong Government
jNhdzlk SB Vqqztrrzrkn Yjyg LnrdgxzVFWDKIntermediate 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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