in the last 10 years...ARKK beat Berkshire...

Actually, no.
BRK ten year CAGR 13.42%
ARKK ten year CAGR 11.20%

Which is really surprising, since what's basically a momentum strategy should have done pretty well in what was mostly one long bull market for tech.

And for further comparison, to see if the manager earned her fees,
SPY ten year CAGR 12.74%
QQQE ten year CAGR 12.02%

As always, a single start point and single end point doesn't say that much. For once, a chart tells you more: ARKK did amazingly for 12 months from the pandemic low, then scarily gave all that back in the next 12 months, and had nice boring returns the other 8 years, though below market overall.

If there is a lesson, it's that overhyped growth stocks are *on average* poor picks. That they were poor picks for her in the last ten years, a golden age for them, is surprising.

Jim

Berkshire Hathaway FAQ

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