Ark added to existing stakes in Joby Aviation (JOBY +0.18%), Kodiak AI (KDK 3.47%), and CRISPR Therapuetics (CRSP 4.52%). Even after Thursday's slide, Joby Aviation stock is still beating the market with a 33% return over the past year. However, the market just erased $2 billion in market cap in a single day because Joby moved to raise $1.2 billion. At its summertime peak last year, this was a $19 billion company. Kodiak AI hit the market as a special-purpose acquisition company deal valued at $2.5 billion back in September.