wouldnt the margin costs outweigh the interest made on the tbills?
Please correct me if I'm wrong.
Let's say I want to buy a $100,000 1-month Tbill on margin.
IB Canada's margin interest rate is 5.8%
To calculate how much it will cost me to hold a 1 month Tbill, I simply do the following calculations
0.058 x $100,000 = $5800
I then divide this result by 360.
It will cost me $16.11 per day in margin interest.
I then multiply this number by 22, since there are typically 22 trading days in a month.
My gross cost (in interest) will be $354.44 to buy a 1 month $100,000 Treasury Bill using margin.
One the TBills I'm looking at is a $100 Tbill that is being sold at $98.3.
That's a 1.7% profit at maturity. I then multiple $1.7 x 1000 to see what my profit would be if the market value is $100,000, since I'm buying a $100,000 Tbill.
My gross profit for buying a 1 month $100,000 Tbill is $1700.
$1700 - $354.44 = $1345.56.
$1345.56 is my net profit after expenses.
My collateral is $1000. IB has 100:1 leverage. I can buy a $100,000 Tbill with only $1000 in collateral.
$1345.56 / $1000= 134% ROI.
Can you please tell me if I'm right or if I'm way off base?
Thanks