iShares
 
Bonds98.74%
Cash0.00%
Other*1.26%
*May include dividends booked but not yet received.
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Holdings Detail as of 2/9/2012 (Holdings subject to change)

CUSIP Name % Net
Assets
Market
Value ($)
Maturity Credit
Rating
Moody's
/S&P
Effective Duration Effective
Duration
Coupon Yield
to
Maturity
Yield
to
 Worst
Sector
-- TREASURY BOND 8.57 $275,873,819 5/15/2041 Aaa /
AA+
17.66 4.38 3.14 3.14 Treasuries
-- TREASURY BOND 8.35 $268,814,308 2/15/2040 Aaa /
AA+
16.89 4.62 3.10 3.10 Treasuries
-- TREASURY BOND 8.26 $265,944,481 11/15/2040 Aaa /
AA+
17.58 4.25 3.13 3.13 Treasuries
-- TREASURY BOND 8.09 $260,633,796 5/15/2040 Aaa /
AA+
17.31 4.38 3.12 3.12 Treasuries
-- TREASURY BOND 8.08 $260,266,066 2/15/2041 Aaa /
AA+
17.14 4.75 3.12 3.12 Treasuries
-- TREASURY BOND 7.91 $254,675,287 11/15/2039 Aaa /
AA+
17.13 4.38 3.11 3.11 Treasuries
-- TREASURY BOND 7.86 $253,090,387 8/15/2040 Aaa /
AA+
17.67 3.88 3.14 3.14 Treasuries
-- TREASURY BOND 7.74 $249,135,918 8/15/2041 Aaa /
AA+
18.14 3.75 3.16 3.16 Treasuries
-- TREASURY BOND 6.00 $193,212,924 8/15/2039 Aaa /
AA+
16.80 4.50 3.10 3.10 Treasuries
-- TREASURY BOND 5.67 $182,658,801 5/15/2039 Aaa /
AA+
17.05 4.25 3.10 3.10 Treasuries
-- TREASURY BOND 4.45 $143,174,088 11/15/2041 Aaa /
AA+
19.07 3.12 3.19 3.19 Treasuries
-- TREASURY BOND 4.22 $135,825,448 2/15/2039 Aaa /
AA+
17.47 3.50 3.12 3.12 Treasuries
-- TREASURY BOND 3.58 $115,148,528 5/15/2038 Aaa /
AA+
16.49 4.50 3.07 3.07 Treasuries
-- TREASURY BOND 3.08 $99,062,245 5/15/2037 Aaa /
AA+
15.77 5.00 3.04 3.04 Treasuries
-- TREASURY BOND 2.86 $91,960,601 2/15/2038 Aaa /
AA+
16.34 4.38 3.07 3.07 Treasuries
-- TREASURY BOND 2.56 $82,387,699 2/15/2037 Aaa /
AA+
15.69 4.75 3.04 3.04 Treasuries
-- TREASURY BOND 1.50 $48,463,255 2/15/2036 Aaa /
AA+
15.46 4.50 3.01 3.01 Treasuries
-- BLACKROCK FDS III 0.00 $5,777 -- Aaa /
AA+
0.00 0.00 0.00 0.00 S-T Securities
 

Please note: Total allocation percentages may not equal 100% due to rounding or omission of holdings of less than 1%. Information on certain fund holdings of less than 1% may not be widely available and may not be included in this list.