Pioneer Investments: Pioneer Treasury Reserves Fund


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Pioneer Treasury Reserves Fund

Monthly Portfolio Holdings as of 7/30/2010

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Security Name	Par / Shares	Market Value
U.S TREASURY BILL .16%, 8/05/10	55,850,000	$55,849,442
U.S TREASURY BILL .1745%, 8/9/10	50,000,000	$49,996,500
U.S TREASURY BILL .3045%, 8/26/10	46,910,000	$46,905,778
U.S TREASURY BILL .3395%, 2/10/11	1,325,000	$1,323,582
UNITED STATES TREASU .0895%, 8/12/10	25,100,000	$25,099,247
UNITED STATES TREASU .14%, 10/14/10	1,500,000	$1,499,580
UNITED STATES TREASU .1585%, 9/09/10	33,000,000	$32,995,050
UNITED STATES TREASU .1845%, 9/2/10	37,045,000	$37,040,555
UNITED STATES TREASU .2%, 1/16/11	3,000,000	$2,997,720
UNITED STATES TREASU .2185%, 12/2/10	5,000,000	$4,997,250
UNITED STATES TREASU .247%, 11/18/10	1,620,000	$1,619,255
UNITED STATES TREASU .3285%, 4/7/11	700,000	$699,027
UNITED STATES TREASU .362%, 1/13/11	10,000,000	$9,991,700
UNITED STATES TREASU 0.217%, 10/7/10	32,065,000	$32,057,625
UNITED STATES TREASU 0.2595%, 9/23/10	3,255,000	$3,254,284
UNITED STATES TREASU 0% 11/04/10	3,420,000	$3,418,666

The portfolio is actively managed, and current holdings may be different.

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