Highstock raises $30M Series A led by a16z for AI-powered excess inventory marketplace

Highstock, an AI-driven B2B marketplace for excess consumer inventory, has raised a $30M Series A led by a16z, with Greylock, Abstract VC, Daybreak Fund and angel investors participating. The platform already lists over $1B of goods from 100+ major brands and is expanding from beauty into apparel.

Confirmed

• The round was announced by a16z's Olivia Moore and Justine Moore; Jeff Jordan, a marketplaces veteran, is involved per omooretweets.
• Highstock lists over $1B of goods from 100+ major brands, sold through vetted buyer channels.
• The team previously built a mature business in beauty and is expanding into apparel; founder Camille Van Horn previously worked at Instacart.
• Per venturetwins, AI agents handle pricing and matching in excess-inventory transactions.

Why it matters

• Both omooretweets and venturetwins note that consumer brands overproduce to avoid stockouts, creating trillions of dollars in stuck inventory that gets written down, dumped into brand-damaging discount/liquidation channels, or destroyed—eroding margins, brand equity and creating waste.
• Highstock uses AI to price and match this inventory while keeping brands safe, another case of AI landing in supply-chain and B2B transaction scenarios; the a16z-led round signals top-tier institutional conviction in the space.

2026-09-10 ~ 2026-09-11 · 8 related posts

• Highstock Raises $30M Series A Led by a16z to Expand B2B Inventory Marketplace Into Apparel — omooretweets · 2026-09-10
• a16z leads Series A for Highstock, an AI marketplace with $1B+ excess inventory listed — omooretweets · 2026-09-10
• a16z-Backed Highstock Uses AI to Price and Match Brand Excess Inventory — omooretweets · 2026-09-10
• a16z invests in Highstock, an AI marketplace clearing excess inventory — venturetwins · 2026-09-11

4 near-duplicate retellings: venturetwins · omooretweets · omooretweets · venturetwins