United States · California

Duckhorn Vineyards

Duckhorn Vineyards was founded in 1976 by Dan and Margaret Duckhorn in St Helena, Napa Valley, and became the defining producer in elevating California Merlot to fine wine status. The estate's early commitment to single-vineyard Merlot — particularly Three Palms Vineyard in Calistoga — predates the Merlot boom of the 1980s and established benchmarks that outlasted its commercialisation. Now a publicly traded company (NYSE: NAPA) after a 2021 IPO, Duckhorn operates multiple California and Washington State brands but the Napa Valley estate wines anchor the portfolio. Across 1,308 auction lots averaging $125 per bottle, Three Palms Vineyard Merlot is the most valuable label, averaging above $180 and reaching $400+ for the 1994 and 2002 vintages. Estate Grown Merlot and Cabernet Sauvignon trade at $80–$120. The wine that drew Sideways-era criticism to Merlot has proven its age-worthiness: Three Palms from the 1990s routinely shows beautifully at auction with complex secondary character. Paraduxx, a Cabernet-Zinfandel blend, is a smaller-volume specialty. Duckhorn's scale is notable: total production exceeds 200,000 cases, making auction pricing primarily driven by single-vineyard premium lots rather than the broader portfolio.