Can I increase my investment after it is finalized during a rolling cose?

Yes! You can increase your investment, however, this will effectively be made as a new investment.

Because of this, you can only later cancel or amend this part of the investment. 

For example, you had a $1,000 investment finalized and you later invested an additional $600. You can now:

• increase your total investment to $1,800 ($1,000 finalized + $600 new + $200 increase),
• decrease your total investment to $1,200 ($1,000 locked + $200 new), 
• cancel your $600 investment (prior to the cancellation deadline) and be left with the original $1,000 investment
• but you could not reduce your total investment below $1,000.