Final answer:
The portfolio return is approximately 3.07%.
Step-by-step explanation:
To calculate the portfolio return, we need to find the weighted average of the returns of each company based on the initial investments.
First, calculate the total value of the portfolio:
$10,600 + $10,500 + $16,000
= $37,100.
Next, calculate the return for each company:
Company G return = $10,600 * 9.75%
= $1,032.75;
Company S return = $10,500 * -1.30%
= -$136.50;
Company N return = $16,000 * 9.30%
= $1,488.
Finally, calculate the weighted average return:
Total return = ($1,032.75 + -$136.50 + $1,488) / $37,100
= 3.07%.