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20

High-quality bonds are a tough sell these days. Yields

are low so that you are not getting paid much to own

them. On top of that, if they rise, you might lose

money on the underlying bond whether you own the

bond or a high-quality fund. But it doesn’t make

sense to dump them, especially if you have a big fixed-

income stake. Retired investors have long struggled

with how to allocate assets and how much to with-

draw. The well-known

1998

Trinity Study, which

suggested a

4%

annual withdrawal rate for retirees,

was updated in

2009

and concluded that an alloca-

tion of

50%

to bonds (less for certain investors) would

allow an investor to preserve portfolio value for

25

to

30

years, while withdrawing up to

7%

per year.

The

2009

Trinity Study used high-grade corporate

bonds as a proxy for its bond allocation, though other

studies have used intermediate-term U.S. government

bonds with similar results. Most investors will point

out that U.S. government bonds are generally consid-

ered to be the most sensitive to changes in interest

rates because they are default-free. The same applies

to investment-grade corporate bonds, which have

low default rates. However, long-term investors should

not be in the business of choosing bond allocations

based on predictions of the timing and magnitude of

interest-rate movements. What’s more, the yield

curve tends not to shift in a parallel fashion, making it

difficult to predict which bonds will be more or less

affected by changing interest rates. For example, by

mid-February, short-term Treasury rates rose (as

expected), but long-term rates actually dropped. This

was against a backdrop of uneasiness about global

growth and, as a result, the Barclays

US

Treasury Long

Index gained

6%

by Feb.

5

while the Barclays

US

Corporate Bond Index gained

0

.

47%

.

Investors seeking traditional bond exposure—gener-

ally a mix of ballast, diversification from equity risk,

and income—should avoid investing too much in

higher-risk bond funds, including those that hold

sizable portions of high-yield bonds, emerging-markets

bonds, and bank loans. These funds have better yields,

but they will not provide the protection investors

need should the equity market unexpectedly take a

turn for the worse. For most investors, a more

“plain-vanilla” bond allocation—one with a diversified

portfolio, minimal credit risk, and moderate interest-

rate risk that will act as a true diversifier to the equi-

ties in a portfolio—is likely the most suitable choice

for a retired investor, with a moderate time horizon,

who makes annual withdrawals from his or her port-

folio. These “core bond funds” typically fall into

the intermediate-term bond Morningstar Category and

generally keep their duration close to the Barclays

Aggregate Bond Index. Many actively managed core

bond funds don’t hold the level of Treasuries that

the index does, though some hold high-yield, emerging-

markets, asset-backed, and mortgage-backed bonds,

so it’s important to know what you own.

In the year-to-date fund performance through

February

2016

, you can see why this is. High-quality

funds held up quite well while lower-quality

funds took on losses. The intermediate-term bond

Morningstar Category gained

1

.

16%

while the

high-yield bond category lost

1

.

35%

.

Investors looking for passive exposure to the index

can’t do much better than

Vanguard Total Bond

Market Index

VBTLX

, which charges rock-bottom

fees (

7

basis points) and has tracked the index’s

returns reasonably well over the long haul.

For more active exposure, investors can look to

Metro-

politan West Total Return Bond

MWTRX

, which

has a Morningstar Analyst Rating of Gold and ranks in

the top percentile of returns over the trailing

10

years through February

2016

, or

Western Asset Core

Bond

WATFX

, which often takes the opposite side

of consensus bets, making it a slightly more daring

option. While investors may view core bond funds

as boring, in many cases, boring is best.

K

Contact Cara Esser at

cara.esser@morningstar.com

The Case for Core Bond Funds

Income Strategist

|

Cara Esser