Money market securities outstanding in 1990, 2004, 2007, 2010 and 2013
Billions $
Instrument 1990 2004 2007 2010 2013
Treasury Bills $ 527 $ 982 $1,010 $1,856 $1,607
Fed funds & Repos 372 1,585 2,731 1,656 1,097
Commercial Paper 538 1,310 2,109 1.083 1,001
Negotiable CDs 547 1,379 2,149 1,822 1,491
Banker’s Acceptances 52 4 1 1 0
Total $2,036 $5,260 $8,000 $6,418 $5,196
% of Total in Given Year
Instrument 1990 2004 2007 2010 2013
Treasury Bills 26% 19% 13% 29% 31%
Fed funds & Repos 18% 30% 34% 26% 21%
Commercial Paper 26% 25% 26% 17% 19%
Negotiable CDs 27% 26% 27% 28% 29%
Banker’s Acceptances 3% 0.1% 0.0% 0.0% 0%
100% 100% 100% 100% 100%
Source: Text
The increase in Treasury Bills is due to increased government borrowing during and after the
financial crisis. The decline in Fed funds and repos coincides with the growth of excess reserves
held by banks and a decline in unsecured lending during the crisis. Many banks borrowed at the
Federal Reserve’s discount window for funding needs during the crisis. Commercial paper
amounts declined with the financial crisis due to default risk concerns (as did the quantity of
negotiable CDs), weaker borrowing demand and lower long term funding costs.
a. Treasury Bills
T-bills are short term obligations of the U.S. government used to finance government spending
needs. In 2013 there was $1,607 billion outstanding comprising about 31% of total money
market securities. Original issue maturities are 4, 13, 26 or 52 weeks. The minimum
denomination is $100 but a round lot is $5 million. T-bills are thought to be free of default risk
and the T-Bill rate is often used as a measure of the short term ‘risk free rate.’ Each week new 13
and 26 week T-bills are offered for sale at competitive auction. T-bills are sold to the highest
bidder at auction, but no one bidder can purchase more than 35% of the total amount in any one
auction. Noncompetitive bids of up to $5 million can be made. The Treasury is using a single
price auction to determine the price all bidders pay.
Treasury securities used to be sold at a discriminating auction where high bidders paid higher
prices, and lower bidders paid lower prices. At that time noncompetitive bidders paid the average
price of the accepted bids. The text appendix discusses reasons for the change in bid process.
Today, competitive bidders submit a discount bid quote and the Treasury determines the price by
calculating the funds needed less the amount of noncompetitive bids and then chooses the ‘stop
out yield’ which is the maximum bid yield accepted.
In the event of an oversubscription, competitive bidders who bid lower yields receive their full
bid amount and bidders at the stop out yield receive a prorated amount of their quantity desired.