Private investments

Private Investments
Cash Flow
Previous Cash Investment Fund 162,203M SC$ Total Investment FundCash
New Contributions by the Population 640M SC$ Contributions to the Investment Fund
Dividend from Private Investments 0M SC$ Dividend Income
Income from Selling Shares 0M SC$ Income from Fund Shares Sold This Month
Cost of Buying Shares 0M SC$ Cost of Shares Bought This Month
Payout to Workers Last Month (1.00% Per Year Of Total Fund Assets) -135M SC$ Amount Paid Out By The Fund
Current Cash Investment Fund 162,707M SC$ Fund Total Cash

Assets
Current Cash Investment Fund 162,707M SC$ Fund Total Cash
Investment Fund Investments 0M SC$ Value of the Fund Share Portfolio
Total Funds Assets 162,707M SC$ Total Investment Fund

Payout to Workers
Percentage Of Fund Pa

The investment funds are profitable and very efficient when you have automatic buying and selling. It's difficult to get higher profits manually. But the share market is fun and will allow you to learn plenty about corps. It's worth at least experimenting with some manual buying and selling.

In your case:
Your fund has no investments at all. Cash does not accrue interest. The only way you'll see the fund grow is if the cash is invested in shares.
You probably switched off the automatic buying/selling of shares in your "country automation" settings.

In general:
Performance of the fund depends on how the share market is doing. Manually controlling the share portfolio of the investment fund can earn your more than letting it happen automatically but it does require time and effort.