Cathie Wood, the founder of Ark Invest, is fiercely bullish on cryptocurrencies. She expects Bitcoin to surge to as high as $1.25 million over the next five years, and Ether to soar to $160,000-$180,000 within the next six years.

We should take those sky-high estimates with a grain of salt. However, Wood is backing those bullish forecasts with some big purchases of crypto stocks across Ark’s flagship ETFs. Let’s take a closer look at two crypto stocks Wood keeps buying — Coinbase (COIN +6.01%) and Circle (CRCL +10.39%) — and see why they’re worth nibbling on in this choppy market.

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Coinbase

Coinbase is one of the world’s largest cryptocurrency exchanges. It generates most of its revenue from crypto trading…