Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX)

Fund Assets	17.10B
Expense Ratio	0.038%
Min. Investment	$3,000
Turnover	91.00%
Dividend (ttm)	0.78
Dividend Yield	4.39%
Dividend Growth	1.66%
Payout Frequency	Monthly
Ex-Dividend Date	Oct 1, 2026

Previous Close	17.84
YTD Return	-2.00%
1-Year Return	-1.07%
5-Year Return	0.02%
52-Week Low	17.64
52-Week High	19.13
Beta (5Y)	-0.04
Holdings	4890
Inception Date	Dec 3, 2009

About VMBSX

This economical index fund primarily invests in pass-through securities backed by U.S. mortgages, issued by government-sponsored entities such as GNMA, FNMA, and FHLMC. Beyond standard bond market fluctuations, a notable exposure is prepayment risk; consequently, the fund's yield is prone to decrease during periods of high mortgage refinancing activity. This offering may suit investors aiming for consistent monthly income over a medium-term horizon, intending it for the fixed income segment of their investment portfolio.

• Fund Family: Vanguard
• Category: US Mortgage
• Performance Rating: Average
• Risk Rating: Above Average
• Stock Exchange: Nasdaq
• Ticker Symbol: VMBSX
• Share Class: Admiral Shares
• Index: Bloomberg US MBS Float Adjusted TR USD

Performance

VMBSX had a total return of -1.07% in the past year, including dividends. Since the fund's inception, the average annual return has been 1.86%.

Equivalent ETF

VMBSX has an equivalent ETF with the ticker symbol VMBS, the Vanguard Mortgage-Backed Securities ETF. This is an ETF from the same fund company that follows the same index. It has an expense ratio of 0.03% compared to 0.038% for VMBSX.

Symbol	Name	Expense Ratio
VMBS	Vanguard Mortgage-Backed Securities ETF	0.03%

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
VMBIX	Institutional Shares	0.04%

Dividend History

Ex-Dividend	Amount	Pay Date
Oct 1, 2026	$0.0651	Oct 2, 2026
Sep 1, 2026	$0.0665	Sep 2, 2026
Aug 3, 2026	$0.0671	Aug 4, 2026
Jul 1, 2026	$0.0657	Jul 2, 2026
Jun 1, 2026	$0.0652	Jun 2, 2026
May 1, 2026	$0.0642	May 4, 2026

Data Sources: Tiingo, Financial Modeling Prep, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Financial Modeling Prep. Several fund data points are also provided by Finnhub.

Last checked:

Oct 15, 2026

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