TSLA's gone up a lot in the last few years, perhaps 20% of Ark's market cap being in a single stock might be bad business? But I wonder if it's more likely to d

TSLA's gone up a lot in the last few years, perhaps 20% of Ark's market cap being in a single stock might be bad business? But I wonder if it's more likely to do with them losing 50% of their assets in less than a year: > As of February 2021, the company had $50 billion in assets under management. By January 2022, assets had dropped to $23.9 billion, after a period of poor performance.