RKLB ▼ -3.6% - Rocket Lab Corporation $RKLB Cathie Wood's ARK Investment buys 480.8K shares of Rocket Lab today Rocket Lab shares fell 3.6% today despite ARK Investment Management, the prominent growth-focused fund run by Cathie Wood, purchasing 480,800 shares of the company. The buying by one of Wall Street's highest-profile growth investors was insufficient to overcome broader market headwinds or existing selling pressure in the stock. 01-SEP-2026 08:19 PM ET