iShares - Product Information - Fixed Income Funds

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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.

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Fixed Income Product As of: 3/18/2010	Ticker	Category	Ratings, Maturity, Risk					Yields (%)
			S&P Average Rating	Moody's Average Rating	The mean remaining term to maturity of the underlying bonds in a portfolio. Weighted Average Maturity (yrs)	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. Effective Duration		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. Dist (%)	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. 30 Day SEC	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. Average Yield to Maturity
			S&P Average Rating	Moody's Average Rating		Fund	Index			Fund	Index


iShares Barclays Aggregate Bond Fund	AGG	Broad Market	AA+	Aa1	5.95	4.20	4.42	4.03	1.78	3.01	3.36
iShares Barclays Short Treasury Bond Fund	SHV	Government	Govt	Govt	0.35	0.34	0.32	0.09	0.14	0.26	0.17
iShares Barclays 1-3 Year Treasury Bond Fund	SHY	Government	Govt	Govt	1.96	1.91	1.86	1.17	0.72	0.95	0.80
iShares Barclays 3-7 Year Treasury Bond Fund	IEI	Government	Govt	Govt	4.97	4.51	4.53	2.39	2.17	2.35	2.23
iShares Barclays 7-10 Year Treasury Bond Fund	IEF	Government	Govt	Govt	8.54	7.18	7.48	3.51	3.31	3.44	3.42
iShares Barclays 10-20 Year Treasury Bond Fund	TLH	Government	Govt	Govt	14.50	9.47	9.89	3.77	3.97	4.11	4.08
iShares Barclays 20+ Year Treasury Bond Fund	TLT	Government	Govt	Govt	27.55	14.82	15.78	4.15	4.38	4.55	4.49
iShares Barclays TIPS Bond Fund	TIP	Government	Govt	Govt	9.07	3.64	4.48	0.06	0.75	3.03	3.19
iShares Barclays Agency Bond Fund	AGZ	Government	Govt	Govt	3.47	2.91	N/A	2.15	1.38	1.60	N/A
iShares Barclays Intermediate Government/Credit Bond Fund	GVI	Government/Credit	AA+	Aa1	4.44	3.80	3.78	3.21	2.23	2.42	2.43
iShares Barclays Government/Credit Bond Fund	GBF	Government/Credit	AA+	Aa1	7.26	5.06	5.17	3.44	2.72	2.90	2.91
iShares 10+ Year Government/Credit Bond Fund	GLJ	Government/Credit	AA-	Aa2	21.20	11.22	11.83	5.18	5.10	5.17	5.26
iShares Barclays 1-3 Year Credit Bond Fund	CSJ	Credit	A+	A1	2.46	1.86	1.82	3.11	1.74	1.88	2.12
iShares Barclays Intermediate Credit Bond Fund	CIU	Credit	A	A2	5.34	4.20	4.27	4.78	3.34	3.48	3.66
iShares Barclays Credit Bond Fund	CFT	Credit	A	A2	9.69	5.89	6.13	5.19	4.00	4.12	4.26
iShares 10+ Year Credit Bond Fund	CLY	Credit	A-	A3	22.57	10.95	11.58	5.75	5.87	5.85	6.12
iShares iBoxx $ Investment Grade Corporate Bond Fund	LQD	Credit	A	A2	12.07	7.13	0.00	5.47	4.66	4.69	5.32
iShares iBoxx $ High Yield Corporate Bond Fund	HYG	Credit	B+	B2	5.12	4.18	N/A	9.65	8.43	8.49	9.06
iShares Barclays MBS Bond Fund	MBB	Mortgages	Govt	Govt	3.18	2.65	3.23	4.58	-0.12	2.96	3.89
iShares S&P Short Term National AMT-Free Municipal Bond Fund	SUB	Municipal	AA	Aa3	2.35	2.12	2.19	1.69	0.79	0.98	1.12
iShares S&P National AMT-Free Municipal Bond Fund	MUB	Municipal	AA	Aa3	8.01	7.46	6.17	4.06	3.14	3.33	3.69
iShares 2012 S&P AMT-Free Municipal Series	MUAA	Municipal	AA	Aa3	2.26	2.15	2.24	0.93	0.60	0.89	0.97
iShares 2013 S&P AMT-Free Municipal Series	MUAB	Municipal	AA	Aa2	3.26	3.02	3.12	1.30	0.93	1.21	1.34
iShares 2014 S&P AMT-Free Municipal Series	MUAC	Municipal	AA+	Aa2	4.22	3.83	3.97	1.65	1.12	1.39	1.61
iShares 2015 S&P AMT-Free Municipal Series	MUAD	Municipal	AA	Aa2	5.23	4.63	4.77	2.18	1.61	1.86	2.02
iShares 2016 S&P AMT-Free Municipal Series	MUAE	Municipal	AA+	Aa2	6.22	5.36	5.52	2.62	2.04	2.30	2.51
iShares 2017 S&P AMT-Free Municipal Series	MUAF	Municipal	AA+	Aa2	7.22	6.06	6.25	2.95	2.39	2.67	2.83
iShares S&P California AMT-Free Municipal Bond Fund	CMF	Municipal	AA-	A1	10.08	7.90	6.90	4.32	3.52	3.79	4.04
iShares S&P New York AMT-Free Municipal Bond Fund	NYF	Municipal	AA	Aa3	6.89	7.12	5.41	3.88	2.92	3.13	3.73
iShares S&P/Citigroup 1-3 Year International Treasury Bond Fund	ISHG	International	AA	Aa1	1.85	1.78	1.78	1.07	0.82	1.16	1.17
iShares S&P/Citigroup International Treasury Bond Fund	IGOV	International	AA	Aa1	8.24	6.26	6.41	2.26	2.04	2.38	2.39
iShares JPMorgan USD Emerging Markets Bond Fund	EMB	International	BBB-	Baa3	11.92	6.88	7.23	6.17	5.15	5.76	0.07

*Effective Duration and Avg. Yield to Maturity as of previous month end.

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.