The second half of 2018 has not been kind to Nvidia at all. The crypto craze is gone and AIB partners are still overstocked with pascal GPUs, the trade wars in China are creating economic instabilities and the launch of the RTX 2000-series was not really what the green team hoped for. This series of unfortunate events lead to falling share prices and investors are on the edge now.
https://www.notebookcheck.net/Nvidia-s-stock-takes-a-dive-again-largest-investor-ready-to-pull-out.377971.0.html