iShares US Aggregate Bond Index K (WFBIX)

Fund Assets	3.26B
Expense Ratio	0.05%
Min. Investment	$5,000,000
Turnover	93.00%
Dividend (ttm)	0.36
Dividend Yield	3.97%
Dividend Growth	5.71%
Payout Frequency	Monthly
Ex-Dividend Date	Jul 31, 2026

Previous Close	8.98
YTD Return	0.09%
1-Year Return	2.49%
5-Year Return	2.55%
52-Week Low	8.92
52-Week High	9.30
Beta (5Y)	0.25
Holdings	9737
Inception Date	Jul 2, 1993

About WFBIX

The iShares U.S. Aggregate Bond Index Fund Class K is an open-end mutual fund focused on tracking the total return performance of the Bloomberg U.S. Aggregate Bond Index. Its primary objective is to offer broad-based exposure to the U.S. investment-grade bond market, encompassing U.S. Treasury securities, agency mortgage-backed debt, and corporate bonds. The fund implements a passively managed strategy, typically allocating at least 90% of its assets to securities included in the benchmark index, resulting in a highly diversified portfolio with thousands of holdings. With a low expense ratio and institutional share class structure, this fund appeals to investors seeking efficient, cost-effective fixed income exposure. Notable features include monthly income distributions and significant positions in U.S. government and agency securities, alongside corporate debt from major financial institutions. As one of the core holdings in many bond portfolios, the fund serves a key role in providing broad market coverage, stability, and income generation within the fixed income sector.

• Fund Family: BlackRock
• Category: Intermediate Core Bond
• Performance Rating: Average
• Risk Rating: Average
• Stock Exchange: NASDAQ
• Ticker Symbol: WFBIX
• Share Class: Class K Shares
• Index: Bloomberg U.S. Aggregate Bond TR

Performance

WFBIX had a total return of 2.49% in the past year, including dividends. Since the fund's inception, the average annual return has been 4.16%.

Dividend History

Ex-Dividend	Amount	Pay Date
Jul 31, 2026	$0.03046	Aug 3, 2026
Jun 30, 2026	$0.03001	Jul 1, 2026
May 29, 2026	$0.03022	Jun 1, 2026
Apr 30, 2026	$0.02981	May 1, 2026
Mar 31, 2026	$0.03017	Apr 1, 2026
Feb 27, 2026	$0.02867	Feb 27, 2026

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Aug 27, 2026

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