Vanguard Admiral Treasury Money Market Fund          
 
 
 
Schedule of Investments          
As of November 30, 2009          
 
      Face   Market  
    Maturity   Amount   Value  
  Yield 1   Date   ($000)   ($000)  

U.S. Government and Agency Obligations (106.3%)        
United States Treasury Bill   0.150%–0.290%   12/3/09   1,499,840   1,499,821  
United States Treasury Bill   0.140%–0.346%   12/10/09   1,036,575   1,036,505  
United States Treasury Bill   0.135%–0.290%   12/17/09   1,105,000   1,104,892  
United States Treasury Bill   0.100%   12/24/09   1,100,000   1,099,930  
United States Treasury Bill   0.101%–0.351%   12/31/09   669,913   669,800  
United States Treasury Bill   0.075%–0.285%   1/7/10   870,000   869,810  
United States Treasury Bill   0.070%   1/14/10   1,076,111   1,076,019  
United States Treasury Bill   0.080%–0.285%   1/21/10   1,051,786   1,051,404  
United States Treasury Bill   0.075%–0.275%   1/28/10   1,394,518   1,393,983  
United States Treasury Bill   0.060%   2/4/10   1,069,000   1,068,884  
United States Treasury Bill   0.065%–0.281%   2/11/10   1,912,000   1,911,484  
United States Treasury Bill   0.065%–0.270%   2/18/10   2,390,230   2,389,657  
United States Treasury Bill   0.040%–0.255%   2/25/10   1,810,000   1,809,591  
United States Treasury Bill   0.060%–0.240%   3/4/10   1,840,000   1,839,487  
United States Treasury Bill   0.225%   3/11/10   465,000   464,709  
United States Treasury Bill   0.210%   3/18/10   780,000   779,513  
United States Treasury Bill   0.190%   3/25/10   525,000   524,684  
United States Treasury Bill   0.190%   4/1/10   390,000   389,751  
United States Treasury Bill   0.150%   4/8/10   620,000   619,669  
United States Treasury Bill   0.170%   4/22/10   900,000   899,397  
United States Treasury Bill   0.185%   4/29/10   1,000,000   999,234  
United States Treasury Bill   0.165%   5/13/10   387,000   386,711  
United States Treasury Bill   0.140%   5/27/10   456,000   455,686  
Total U.S. Goverment and Agency Obligations (Cost $24,340,621)       24,340,621  
Other Assets and Liabilities-Net (-6.3%)         (1,436,911)  
Net Assets (100%)         22,903,710  

1      

Represents annualized yield at date of purchase for discount securities, and coupon for coupon-bearing securities.

Security Valuation: Securities are valued at amortized cost, which approximates market value.

Various inputs may be used to determine the value of the fund's investments. These inputs are summarized in three broad levels for financial statement purposes. The inputs or methodologies used to value securities are not necessarily an indication of the risk associated with investing in those securities.

Level 1—Quoted prices in active markets for identical securities.

Level 2—Other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).

Level 3—Significant unobservable inputs (including the fund's own assumptions used to determine the fair value of investments).

At November 30, 2009, 100% of the fund’s investments were valued using amortized cost, in accordance with rules under the Investment Company Act of 1940. Amortized cost approximates the current fair value of a security, but since the value is not obtained from a quoted price in an active market, securities valued at amortized cost are considered to be valued using Level 2 inputs.


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