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Name: _________________________________________ Date: ______________________
The Stock Market
The family has decided to start investing money to create more savings for the twins’ college
tuition. They have $1500 and are trying to decide in which stocks to invest. Using current
stock market data, calculate the money they made or lost during the week. Use this
information to determine in which company the family should invest.
Stock
Stock
Ticker
Symbol
Purchase
Price
Number of Shares
Purchased
Total Amount Spent
Balance
Disney
DIS
$114.89
10
1148.90
1148.90
Google
GOOG
$524.22
2
1048.44
1048.44
1. Complete the chart for both a Disney investment and a Google investment to determine
which stock would yield the highest profit.
The amount of money placed in a bank account if Disney is purchased: $1148.90
Day
Opening Price
Closing Price
1
$114.89
$103.10
2
$103.10
$144.10
3
$144.10
$102.70
4
$102.70
$165.00
5
$165.00
$144.50
6
$144.50
$203.80
7
$203.80
$214.40
Change
(Positive or
Negative)
Money Made
or Lost
Net Worth
The amount of money placed in a bank account if Google is purchased: $1048.44.
Day
2.
Opening Price
Closing Price
1
$524.22
$501.80
2
$501.80
$583.40
3
$583.40
$631.70
4
$631.70
$722.30
5
$722.30
$525.40
6
$525.40
$503.60
7
$503.60
$420.50
Change
(Positive or
Negative)
Money Made
or Lost
Disney
How much money did you deposit in the bank? _____________
What was the final net worth after Day 7? ___________
What was the total change? ________
What is the percent change? (total change  original deposit) __________
Google
How much money did you deposit in the bank? _____________
What was the final net worth after Day 7? ___________
What was the total change? ________
What is the percent change? (total change  original deposit) __________
Net Worth
3. Based on the percent change, what would have been the best company for them to invest
in? Explain how you used percent change to justify your answer.
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
4. What day would have been a good day to sell the shares for Disney or Google? Explain your
reasoning for the decision.
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Solutions
1. The amount of money placed in a bank account if Disney is purchased: $1148.90
Day
Opening Price
Closing Price
Money Made
or Lost
Net Worth
$103.10
Change
(Positive or
Negative)
-$11.79
1
$114.89
-$117.90
$1031.00
2
$103.10
$144.10
+$41.00
+$410.00
$1441.00
3
$144.10
$102.70
-$41.40
-$414.00
$1027.00
4
$102.70
$165.00
+$62.30
+$623.00
$1650.00
5
$165.00
$144.50
-$20.50
-$205.00
$1445.00
6
$144.50
$203.80
$59.30
$593.00
$2038.00
7
$203.80
$214.40
+$10.60
+$106.00
$2144.00
The amount of money placed in a bank account if Google is purchased: $1048.44.
Day
Opening Price
Closing Price
Money Made
or Lost
Net Worth
$501.80
Change
(Positive or
Negative)
-$22.42
1
$524.22
-$44.84
$1003.60
2
$501.80
$583.40
+$81.60
+$163.20
$1166.80
3
$583.40
$631.70
+$48.30
+$96.60
$1263.40
4
$631.70
$722.30
+$90.60
+$181.20
$1444.60
5
$722.30
$525.40
-$196.90
-$393.80
$1050.80
6
$525.40
$503.60
-$21.80
-$43.60
$1007.20
7
$503.60
$420.50
-$83.10
-$166.20
$841
2.
Disney
How much money did you deposit in the bank? $1148.90
What was the final net worth after Day 7? $2144.00
What was the total change? 995.10
What is the percent change? (total change  original deposit) .87 or 87%
Google
How much money did you deposit in the bank? $1048.44
What was the final net worth after Day 7? $841
What was the total change? -$207.44
What is the percent change? (total change  original deposit) -0.198 or -20%
3. Based on the percent change, what would have been the best company for them to invest
in? Explain how you used percent change to justify your answer.
Disney would have been the best company because it has a positive change.
4. What day would have been a good day to sell the shares for Disney or Google? Explain your
reasoning for the decision.
Possible answers could vary depending on whether students reasoned that they would sell
after they had the largest gain or the day after the biggest loss for fear of it dropping more.
Accept any reasonable explanation for this.