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United States

The performance quoted represents past performance and does not guarantee future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when sold, may be worth more or less than the original cost. Current performance may be lower or higher than the performance quoted.


Broad Market
AA+
Aa1
5.95
4.20
4.42
4.03
1.78
3.01
3.36
Government
Govt
Govt
0.35
0.34
0.32
0.09
0.14
0.26
0.17
Government
Govt
Govt
1.96
1.91
1.86
1.17
0.72
0.95
0.80
Government
Govt
Govt
4.97
4.51
4.53
2.39
2.17
2.35
2.23
Government
Govt
Govt
8.54
7.18
7.48
3.51
3.31
3.44
3.42
Government
Govt
Govt
14.50
9.47
9.89
3.77
3.97
4.11
4.08
Government
Govt
Govt
27.55
14.82
15.78
4.15
4.38
4.55
4.49
Government
Govt
Govt
9.07
3.64
4.48
0.06
0.75
3.03
3.19
Government
Govt
Govt
3.47
2.91
N/A
2.15
1.38
1.60
N/A
Government/Credit
AA+
Aa1
4.44
3.80
3.78
3.21
2.23
2.42
2.43
Government/Credit
AA+
Aa1
7.26
5.06
5.17
3.44
2.72
2.90
2.91
Government/Credit
AA-
Aa2
21.20
11.22
11.83
5.18
5.10
5.17
5.26
Credit
A+
A1
2.46
1.86
1.82
3.11
1.74
1.88
2.12
Credit
A
A2
5.34
4.20
4.27
4.78
3.34
3.48
3.66
Credit
A
A2
9.69
5.89
6.13
5.19
4.00
4.12
4.26
Credit
A-
A3
22.57
10.95
11.58
5.75
5.87
5.85
6.12
Credit
A
A2
12.07
7.13
0.00
5.47
4.66
4.69
5.32
Credit
B+
B2
5.12
4.18
N/A
9.65
8.43
8.49
9.06
Mortgages
Govt
Govt
3.18
2.65
3.23
4.58
-0.12
2.96
3.89
Municipal
AA
Aa3
2.35
2.12
2.19
1.69
0.79
0.98
1.12
Municipal
AA
Aa3
8.01
7.46
6.17
4.06
3.14
3.33
3.69
Municipal
AA
Aa3
2.26
2.15
2.24
0.93
0.60
0.89
0.97
Municipal
AA
Aa2
3.26
3.02
3.12
1.30
0.93
1.21
1.34
Municipal
AA+
Aa2
4.22
3.83
3.97
1.65
1.12
1.39
1.61
Municipal
AA
Aa2
5.23
4.63
4.77
2.18
1.61
1.86
2.02
Municipal
AA+
Aa2
6.22
5.36
5.52
2.62
2.04
2.30
2.51
Municipal
AA+
Aa2
7.22
6.06
6.25
2.95
2.39
2.67
2.83
Municipal
AA-
A1
10.08
7.90
6.90
4.32
3.52
3.79
4.04
Municipal
AA
Aa3
6.89
7.12
5.41
3.88
2.92
3.13
3.73
International
AA
Aa1
1.85
1.78
1.78
1.07
0.82
1.16
1.17
International
AA
Aa1
8.24
6.26
6.41
2.26
2.04
2.38
2.39
International
BBB-
Baa3
11.92
6.88
7.23
6.17
5.15
5.76
0.07

Definitions:

Weighted Average Maturity (yrs)
The mean of the remaining term to maturity of the underlying bonds in a portfolio.

Effective Duration
A measure of the responsiveness of a bond or portfolio's price to changes in interest rates. Effective Duration takes into account the possible changes in expected bond cash flows due to interest rate changes.

Weighted Average Coupon (%)
The mean of the coupon rate of the underlying bonds in a portfolio.

Distribution (%)
The Distribution relates the amount of dividends paid to the market price. This measure is only a component of the total return of the fund and should be used along with price return to calculate a total return. This yield calculation is relevant for shareholders because it is the yield they receive.

30 Day SEC Yield
A standard yield calculation developed by the Securities and Exchange Commission that allows for fairer comparisons among bond funds. It is based on the most recent 30-day period. This yield figure reflects the interest earned during the period after deducting the fund's expenses for the period.

Average Yield to Maturity (%)
The Average YTM is the interest rate that will make the present value of the cash flows from a bond equal to its market price plus accrued interest. The average yield to maturity considers not only the coupon income, but any capital gain or loss that the investor will realize by holding the bonds to maturity. It also considers the reinvestment of the coupons.

Option Adjusted Spread (OAS)
OAS measures the yield spread over US Treasuries for a bond or portfolio. OAS takes into account the possible changes in expected bond cash flows due to interest rate changes.

Tax Equivalent Yields (%)
Tax Equivalent Yields are calculated using the 35% tax bracket

# of Fund Holdings
Holdings are subject to change.

NAV ($)
Net Asset Value is calculated by dividing the total value of all the securities in its portfolio, less any liabilities, by the number of fund shares outstanding.

Fund Size ($M)
Amount of money in the fund which is subject to change.

Estimated Tracking Error
Estimated tracking error is a range of a divergence between the price behavior of a position or a portfolio and the price behavior of a benchmark.



This information must be accompanied by standardized returns. For standardized performance and performance current to the most recent month end, click on the "Monthly Performance Report" at the top of the screen.

This information must be accompanied by a current prospectus. Click here for a prospectus. Investors should read it carefully before investing.


Investing involves risk, including possible loss of principal.

Bonds and bond funds will decrease in value as interest rates rise.

Shares of iShares Funds are bought and sold at market price (not NAV) and are not individually redeemed from the Fund. Brokerage commissions will reduce returns.

An investment in the fund(s) is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

The iShares Funds ("Funds") are distributed by SEI Investments Distribution Co. (SEI).

The iShares Funds are not sponsored, endorsed, issued, sold or promoted by iBoxx®, J.P. Morgan Securities Inc., or Standard & Poor's, nor are they sponsored, endorsed, or issued by Barclays Capital. None of these companies make any representation regarding the advisability of investing in the Funds. Neither SEI, nor any of its affiliates, are affiliated with the companies listed above.

©2010 BlackRock Institutional Trust Company, N.A. All rights reserved. iShares® is a registered trademark of BlackRock Institutional Trust Company, N.A. All other trademarks, servicemarks or registered trademarks are the property of their respective owners.