The water is now the most expensive piece of "Harry Potter" ephemera ever auctioned.

Sotheby's has brought on the Hong Kong-based Christie's veteran Elaine Holt as head of Modern and Contemporary Art team in Asia

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The new space will cover more than 10,800 square feet across five floors, with 30 percent more exhibition space than Sotheby's had before.

Both Christie's and Sotheby's sold nearly $20 million in the category, with many lots well above high estimates, in March.

Despite cloudy financial outlook, Sotheby's paid shareholders $8.5 million in dividends in the first quarter of 2024 and a total of $90 million last year.

Once valued at $30 million, it now has a $15 million–$20 million estimate.

In May, the auction house's New York contemporary art sale was slow, but leadership said it was pleased with the result.

Brooke Lampley, the Global Chairman and Head of Global Fine Art at Sotheby's, is leaving the auction house to become a Senior Director at Gagosian.

The Top 200 collector sold 71 works through Sotheby's auctions and private sales.