are there eft's that invest in private companies?

Yes, there are ETFs that invest in private companies. Private equity ETFs provide investors with exposure to private equity investments and can offer significant and attractive returns on investment. These ETFs hold companies that are not listed on the stock exchange, which are typically considered a less volatile asset class that can offer stable returns and relatively higher dividends. Some of the key ETFs in this space include:

1. Invesco Global Listed Private Equity Portfolio (PSP): This is the largest private equity ETF, with assets totaling over $267 million as of February 2022. It provides global exposure to approximately 70 publicly-listed private equity companies.
2. iShares Listed Private Equity UCITS ETF (Dist) (IE00B1TXHL60): This ETF has a fund size of €704 million and a TER of 0.75% per annum.
3. Xtrackers LPX MM Private Equity Swap UCITS ETF (1CLU0322250712): With a fund size of €363 million and a TER of 0.70% per annum, this ETF offers exposure to private equity companies.
4. FlexShares Listed Private Equity UCITS ETF (IE0008ZGI5C1): This ETF has a fund size of €262 million and a TER of 0.40% per annum.

Investing in private equity ETFs allows investors to gain exposure to private companies without the need for direct investment in illiquid private markets. These ETFs typically use leverage and are strongly transaction-oriented, which can lead to complex financial situations. However, they offer investors the potential for significant returns on investment, especially in a market that is expected to grow significantly in the coming years.