DMBS vs VMBS

DMBSCDoubleLine Mortgage ETF

VMBSAVanguard Mortgage-Backed Securities ETF

In short

DMBS DoubleLine's mortgage desk in an ETF wrapper: an actively managed bond fund built to exceed the Bloomberg U.S. Mortgage-Backed Securities Index over a full market cycle, in a corner of the market almost everyone else simply indexes.

VMBS The plumbing of the U.S. housing market in one ticker: pooled home loans from Ginnie, Fannie and Freddie, tracked by index for 0.03% a year, with income paid monthly.

Stated mandate

DMBS The Fund seeks total return through capital appreciation and current income, exceeding the Bloomberg U.S. Mortgage-Backed Securities Index over a full market cycle.

VMBS The fund seeks moderate and sustainable current income by investing primarily in U.S. agency mortgage-backed pass-through securities issued by GNMA, FNMA, and FHLMC.

Why people hold it

• DMBS Active by design. Managers pick the mortgage bonds instead of copying the index, with a stated aim of exceeding the Bloomberg U.S. Mortgage-Backed Securities Index over a full market cycle.
• Pays monthly, matching the rhythm of the mortgage cash flows underneath it.
• Trades with decent everyday liquidity for an active bond ETF, and sits in the upper half of its mortgage-bond peer group on our review.
• A US agency mortgage mandate run inside a standard 1940 Act fund. No exotic wrapper, no K-1 surprises.

• VMBS 0.03% a year is the cheap end of the mortgage-bond aisle: SPMB and MBB charge 0.04%, JMTG 0.24%, and the typical peer runs far higher.
• Agency pass-throughs from GNMA, FNMA and FHLMC. Credit isn't the main variable here; rates and mortgage behavior are.vanguard.com
• Trading since 2009, a multi-billion-dollar fund holding roughly 300 pools and paying monthly. Boring in the way bond ballast is supposed to be.
• Sits in the top quartile of its mortgage-bond peer group, one of the stronger builds in a crowded, look-alike category.

Worth knowing

• DMBS At 0.39% a year it runs above the typical mortgage-bond ETF, and roughly ten times index trackers like VMBS (0.03%) and MBB (0.04%). Active management has to earn that gap.
• Launched in 2023, so its track record is short relative to the full market cycle the fund itself uses as the yardstick.
• Results ride on the manager's security selection rather than the benchmark, which means the gap versus the index can cut either way.

• VMBS Mortgages don't keep a schedule. Homeowners refinance when rates fall, returning cash to reinvest at lower yields; when rates rise, payoffs slow and bonds stretch out.vanguard.com
• The mandate is current income from one slice of the bond market. No Treasuries, no corporates, no equity kicker.
• Share prices move with interest rates, so this behaves like a bond fund, not a cash parking spot.vanguard.com

Full DMBS profile⁠

Full VMBS profile⁠