The shares were down 1.2% at $129/60.
The Boston company's net loss widened to $1.98 a share from $1.13 in the year-earlier quarter. The adjusted losses were $1.35 a share against 77 cents. Shares outstanding rose 3% to 91.8 million.
Analysts surveyed by FactSet were modeling for a loss of $1.35 a share.
Revenue advanced 42% to $2.34 billion from $1.66 billion. The FactSet view: $2.26 billion.
"As we continue to strengthen our global logistics network through the addition of Castlegate warehouses and last-mile-delivery facilities, we are driving cost efficiencies and building an unparalleled experience for our customers with even faster delivery," Wayfair Chief Executive Niraj Shah said in a statement.
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