NNDM is heavily retail driven, it's been a fan favorite for a year. Their institutional ownership is only 10%[1]. It's similar to IBIO, NKLA, etc, where there's some attention from funds but retail hype on social media is driving it up.
ARKK has been buying NNDM, yes, but:
- they're not passive. they're active.
- they only own 5% of the stock. almost any public stock will have at least 5% owned by some fund, so it's not notable and doesn't disprove the notion that it's retail driven.
- ARKK are known to pile into retail frenzy stocks, so that correlation is going to exist often.
[1] https://www.nasdaq.com/market-activity/stocks/nndm/instituti...