To calculate the average returns for both the US and UK markets from the perspective of a US investor and a UK investor, we need to account for the exchange rate fluctuations in addition to the returns in each respective market.

Here’s the step-by-step approach for both perspectives:

1. US Investor (Holding UK Assets)

The US investor will experience two factors that affect their returns:

• The return in the UK market.
• The changes in the exchange rate (since the investor is converting pounds back to dollars at the end of each period).

The return for a US investor holding UK assets is computed using the following formula for each period:

$R_{US}^{UK} = (1 + R_{UK}) \times \left(\frac{E_{t-1}}{E_{t}}\right) - 1$

Where:

• $R_{US}^{UK}$ = return from a US perspective on UK assets.
• $R_{UK}$ = return in the UK market.
• $E_{t-1}$ = exchange rate at the beginning of the period.
• $E_{t}$ = exchange rate at the end of the period (dollars per pound).

We’ll apply this formula for each period and then average the returns.

2. UK Investor (Holding US Assets)

The UK investor will also be influenced by:

• The return in the US market.
• The changes in the exchange rate (since the investor is converting dollars back to pounds).

The return for a UK investor holding US assets is computed similarly:

$R_{UK}^{US} = (1 + R_{US}) \times \left(\frac{E_{t}}{E_{t-1}}\right) - 1$

Where:

• $R_{UK}^{US}$ = return from a UK perspective on US assets.
• $R_{US}$ = return in the US market.
• $E_{t-1}$ = exchange rate at the beginning of the period.
• $E_{t}$ = exchange rate at the end of the period (dollars per pound).

We’ll apply this formula for each period and then average the returns.

Let me calculate the respective average returns using this method.The average returns are as follows:

1. US Investor holding UK assets: The average return is 23.75%.
2. UK Investor holding US assets: The average return is approximately -5.47%.

The significant difference arises due to both the returns in the respective markets and fluctuations in the exchange rate.

Would you like further details on how these values were computed, or do you have any questions?

Here are 5 related questions you may consider:

1. How do changes in the exchange rate influence foreign investments?
2. What other factors can affect the returns for international investors?
3. How does hedging against currency risk impact returns?
4. What is the difference between nominal and real returns in this context?
5. How would the return calculations change if the exchange rate stayed constant?

Tip: Always account for both market returns and exchange rate movements when calculating returns for international investments.