Cathie Wood-led Ark Investment Management sold over 1.7 million shares of home-health services company Signify Health Inc (NYSE: SGFY), valued at over $47.9 million based on Monday’s closing price, through two of its exchange-traded funds.

Signify’s shares surged as much as 41% to $29.88 in New York before closing at $28 on Monday.

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UnitedHealth submitted the highest bid of over $30 a share, while Amazon’s offer is close to the price, the report said. Final bids are likely on Sept. 6, but a deal could be finalized earlier if any of the parties pre-empt the sales process, the report said.

Signify is the 17th largest holding in the firm’s flagship ARK Innovation ETF (NYSE:ARKK), valued at over $203 million with a weight of 2.43%.