In: Finance
SPY and XIU are ETFs tracking the S&P 500 and S&P/TSX 60 index, which are often used as proxies for the U.S. and Canadian stock markets, respectively. From a set of their historical data, the annual expected returns and standard deviations of those two ETFs and their covariance are estimated as follows: SPY: E(r)= 0.15 σ=0.28 XIU: E(r)= 0.18 σ=0.32 Covariance between SPY and XIU = 0.0618
Suppose that you have $10 million to invest for one year and you want to invest that money into SPY, XIU, and the Canadian one-year T-bill. Assume that the interest rate of the one-year T-Bill is 3% per annum.
Suppose that you have the following utility function: U=E(r) – ½ Aσ2 and A=3
Answer the following questions using Excel:
Draw the opportunity set offered by these two securities (with an increment of 0.01 in weight).
What is the optimal portfolio of SPY and XIU?
Determine your optimal asset allocation among SPY, XIU, and T-Bill, in percentage and in dollar amounts.
Canadian one-year T-bill is the risk-free asset
Draw the opportunity set offered by these two securities
Weight in SPY | Weight in XIU | Expected return | Expected risk (Standard deviation) |
1% | 99.00% | 0.1797 | 0.318737698 |
2% | 98.00% | 0.1794 | 0.317488393 |
3% | 97.00% | 0.1791 | 0.316252241 |
4% | 96.00% | 0.1788 | 0.315029395 |
5% | 95.00% | 0.1785 | 0.313820012 |
6% | 94.00% | 0.1782 | 0.312624247 |
7% | 93.00% | 0.1779 | 0.311442258 |
8% | 92.00% | 0.1776 | 0.310274201 |
9% | 91.00% | 0.1773 | 0.309120236 |
10% | 90.00% | 0.177 | 0.307980519 |
11% | 89.00% | 0.1767 | 0.30685521 |
12% | 88.00% | 0.1764 | 0.305744468 |
13% | 87.00% | 0.1761 | 0.304648453 |
14% | 86.00% | 0.1758 | 0.303567324 |
15% | 85.00% | 0.1755 | 0.30250124 |
16% | 84.00% | 0.1752 | 0.301450361 |
17% | 83.00% | 0.1749 | 0.300414847 |
18% | 82.00% | 0.1746 | 0.299394856 |
19% | 81.00% | 0.1743 | 0.298390549 |
20% | 80.00% | 0.174 | 0.297402085 |
21% | 79.00% | 0.1737 | 0.296429621 |
22% | 78.00% | 0.1734 | 0.295473315 |
23% | 77.00% | 0.1731 | 0.294533326 |
24% | 76.00% | 0.1728 | 0.293609809 |
25% | 75.00% | 0.1725 | 0.292702921 |
26% | 74.00% | 0.1722 | 0.291812817 |
27% | 73.00% | 0.1719 | 0.29093965 |
28% | 72.00% | 0.1716 | 0.290083574 |
29% | 71.00% | 0.1713 | 0.289244741 |
30% | 70.00% | 0.171 | 0.2884233 |
31% | 69.00% | 0.1707 | 0.287619401 |
32% | 68.00% | 0.1704 | 0.286833192 |
33% | 67.00% | 0.1701 | 0.286064818 |
34% | 66.00% | 0.1698 | 0.285314423 |
35% | 65.00% | 0.1695 | 0.28458215 |
36% | 64.00% | 0.1692 | 0.283868138 |
37% | 63.00% | 0.1689 | 0.283172527 |
38% | 62.00% | 0.1686 | 0.282495451 |
39% | 61.00% | 0.1683 | 0.281837045 |
40% | 60.00% | 0.168 | 0.28119744 |
41% | 59.00% | 0.1677 | 0.280576763 |
42% | 58.00% | 0.1674 | 0.279975142 |
43% | 57.00% | 0.1671 | 0.279392699 |
44% | 56.00% | 0.1668 | 0.278829554 |
45% | 55.00% | 0.1665 | 0.278285824 |
46% | 54.00% | 0.1662 | 0.277761624 |
47% | 53.00% | 0.1659 | 0.277257065 |
48% | 52.00% | 0.1656 | 0.276772253 |
49% | 51.00% | 0.1653 | 0.276307293 |
50% | 50.00% | 0.165 | 0.275862284 |
51% | 49.00% | 0.1647 | 0.275437325 |
52% | 48.00% | 0.1644 | 0.275032507 |
53% | 47.00% | 0.1641 | 0.27464792 |
54% | 46.00% | 0.1638 | 0.274283649 |
55% | 45.00% | 0.1635 | 0.273939774 |
56% | 44.00% | 0.1632 | 0.273616374 |
57% | 43.00% | 0.1629 | 0.27331352 |
58% | 42.00% | 0.1626 | 0.27303128 |
59% | 41.00% | 0.1623 | 0.27276972 |
60% | 40.00% | 0.162 | 0.272528898 |
61% | 39.00% | 0.1617 | 0.272308869 |
62% | 38.00% | 0.1614 | 0.272109684 |
63% | 37.00% | 0.1611 | 0.271931388 |
64% | 36.00% | 0.1608 | 0.271774024 |
65% | 35.00% | 0.1605 | 0.271637626 |
66% | 34.00% | 0.1602 | 0.271522227 |
67% | 33.00% | 0.1599 | 0.271427854 |
68% | 32.00% | 0.1596 | 0.271354528 |
69% | 31.00% | 0.1593 | 0.271302267 |
70% | 30.00% | 0.159 | 0.271271082 |
71% | 29.00% | 0.1587 | 0.271260981 |
72% | 28.00% | 0.1584 | 0.271271967 |
73% | 27.00% | 0.1581 | 0.271304036 |
74% | 26.00% | 0.1578 | 0.271357182 |
75% | 25.00% | 0.1575 | 0.271431391 |
76% | 24.00% | 0.1572 | 0.271526647 |
77% | 23.00% | 0.1569 | 0.271642927 |
78% | 22.00% | 0.1566 | 0.271780205 |
79% | 21.00% | 0.1563 | 0.271938449 |
80% | 20.00% | 0.156 | 0.272117622 |
81% | 19.00% | 0.1557 | 0.272317682 |
82% | 18.00% | 0.1554 | 0.272538584 |
83% | 17.00% | 0.1551 | 0.272780278 |
84% | 16.00% | 0.1548 | 0.273042707 |
85% | 15.00% | 0.1545 | 0.273325813 |
86% | 14.00% | 0.1542 | 0.273629531 |
87% | 13.00% | 0.1539 | 0.273953792 |
88% | 12.00% | 0.1536 | 0.274298524 |
89% | 11.00% | 0.1533 | 0.274663649 |
90% | 10.00% | 0.153 | 0.275049087 |
91% | 9.00% | 0.1527 | 0.275454751 |
92% | 8.00% | 0.1524 | 0.275880554 |
93% | 7.00% | 0.1521 | 0.276326401 |
94% | 6.00% | 0.1518 | 0.276792196 |
95% | 5.00% | 0.1515 | 0.277277839 |
96% | 4.00% | 0.1512 | 0.277783225 |
97% | 3.00% | 0.1509 | 0.278308246 |
98% | 2.00% | 0.1506 | 0.278852793 |
99% | 1.00% | 0.1503 | 0.27941675 |
100% | 0.00% | 0.15 | 0.28 |
What is the optimal portfolio of SPY and XIU
We get the optimal portfolio using an excel solver
Initially, enter some random weights ( here 50%-50%)
Solving,
Hence, the weight of SPY in optimal portfolio is 53.50% and of XIU is 46.50%
Determine your optimal asset allocation among SPY, XIU, and T-Bill
We again use an excel solver.
Initially, we input the random weights in SPY, XIU and the Canadian one year T-bill (risk-free -asset) and enter the following constraints in excel solver
Solving we get,
Hence, weight in SPY = 23.90%
weight in XIU = 34.40%
Weight in Canadian T-bill (risk-free asset) = 41.70%
In dollar amounts,
in SPY = 23.90% * 10,000,000 = $2390000
in XIU =34.40%* 10,000,000 = $3440000
in Canadian T-bill (risk-free asset) =41.70%* 10,000,000 = $4170000