Startup profile for Highstock: latest funding, latest known valuation, total disclosed funding, investors, status, sources, and why the company is interesting. Part of the Venture Capital Tracker startup directory.
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Highstock funding, valuation and investors

AI-native B2B marketplace that matches consumer brands’ excess inventory to vetted wholesale buyers without a public fire sale.

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Funding, valuation & investors

Answer-first snapshot

Latest funding

Series A

$30M · September 2026

Latest known valuation

Not publicly disclosed

Total disclosed equity funding

$36M

Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.

Current status

private

series a · New York, NY, USA (734 Broadway); Gurugram, India

Investors in latest funding

Lead: Andreessen Horowitz

Sources: latest funding Last verified: 2026-09-10

Overview

Highstock is a New York private marketplace that connects brands sitting on unsold consumer goods with a vetted network of global wholesale buyers, then runs matching, logistics, compliance, payments, and order paperwork. Beauty and personal care are the beachhead (WWD named Laura Geller, Bliss, and Versed); apparel is launching. CEO Camille van Horne spent six years as an Instacart Director of Product running fulfillment; CTO Sean Cashin spent a decade on Instacart’s engineering team. Fortune named Ashish Sinha cofounder and president at the February 2025 seed. On September 10, 2026 a16z led a $30 million Series A; Olivia Moore is joining the board and Jeff Jordan is an advisor. a16z and the company site claim more than $1 billion of inventory listed, 100+ major brands, and 10 million-plus pounds of product kept out of landfills. Valuation, GMV, recovery rate, and take rate are not disclosed.

Why Highstock is interesting

a16z led a $30M Series A on September 10, 2026 after listed inventory rose from $100M at a February 2025 Greylock seed to $1B+. Valuation, GMV, and take rate were not disclosed — the diligence question is sell-through, not the list.

Product & use cases

Private B2B marketplace: brands list leftover lots, vetted wholesale and live-commerce buyers bid or buy, Highstock handles matching plus logistics, compliance, payments, and paperwork. Highstock does not set the price (Fortune, Feb 2025).

  • Beauty brands moving short-dated SKUs retailers will not accept under 18 months of shelf life
  • Consumer brands reaching international wholesale and live-commerce sellers without a home-market discount bin
  • Wholesale and live sellers (including Whatnot / TikTok Live) sourcing branded lots they cannot buy direct

Key facts

  • Series A (Sep 10, 2026): $30M led by a16z; Olivia Moore joining the board; Jeff Jordan advising — valuation not disclosed (/2026-highstock-30m-series-a-a16z)
  • Seed (Feb 27, 2025): $5.5M led by Greylock (/fund/greylock-partners); Instacart cofounder Max Mullen participated (Fortune)
  • Listed inventory: $100M at seed (Fortune) → $1B+ at Series A (a16z / company site) — listed, not GMV
  • a16z: 100+ major brands; ~60% of volume from brands/conglomerates with >$500M annual revenue
  • Company site: 10M+ pounds of product claimed diverted from landfill; NYC HQ at 734 Broadway plus a Gurugram office

Funding history (newest first)

Series A

2026-09 $30M

Source: https://a16z.com/announcement/investing-in-highstock/

Seed

2025-02 $5.5M

Source: https://fortune.com/2025/02/27/exclusive-two-instacart-alumni-raise-5-5-million-to-build-highstock-an-ebay-for-big-brands-with-excess-inventory/

Investors in our directory

Funds linked from Highstock's profile — open a fund page for stage focus and related deal articles.

Andreessen Horowitz Greylock

Competitive landscape

Edge: Brand-safe privacy plus marketplace ops (matching, logistics, payments) on messy one-off lots. The public proof is listed supply and brand count, not disclosed GMV or recovery rates.

Surplus inventory still clears through off-price, brokers, or the landfill. Highstock is selling a private matching layer so brands can reach live-commerce and export buyers without a public markdown. Switching costs are relationships and trust that lots will not leak into the wrong channel — not a disclosed data moat.

  • Off-price retailers (TJX, Ross) incumbent

    Clear volume in the home market; the brand-dilution reason Highstock exists.

  • Liquidation brokers / jobbers direct

    Relationship-driven, opaque recovery; a16z’s foil for an AI-native matcher.

  • Whatnot / TikTok Live adjacent

    Downstream demand channels Highstock buyers already use, not a brand-side control layer.

  • Product destruction / write-off alternative

    Protects brand equity; forfeits cash. The option Highstock is priced against.

Notable stories

  • Van Horne told WWD the idea clicked in an Instacart-era CPG warehouse visit where sellable snacks were headed to a 'tank' — destruction.
  • Fortune (Feb 2025): typical transaction about $20,000; 50 brands; 50% of transactions outside the U.S.
  • WWD (Sep 2026): named live-commerce buyer The Boyzzz on Whatnot — ~170,000 followers and 145,000+ sales.

Industries

Consumer Marketplaces

Related funding articles

Venture Capital Tracker pieces that cover Highstock's financing or category context.

FAQs about Highstock

Practical answers founders, operators, and investors typically search for.

Highstock is a private B2B marketplace that matches consumer brands’ excess inventory to vetted wholesale buyers and runs the transaction ops (matching, logistics, compliance, payments). Beauty is the beachhead; apparel is launching.
Andreessen Horowitz (/fund/andreessen-horowitz) led a $30 million Series A on September 10, 2026. Greylock (/fund/greylock-partners) led a $5.5 million seed on February 27, 2025; Instacart cofounder Max Mullen participated. a16z did not say whether Greylock returned.
Not disclosed on the Series A or the seed. Do not invent a mark from the $1 billion listed-inventory figure — that is supply on the platform, not a company valuation.
No. a16z and the company site say more than $1 billion in inventory listed. Fortune reported $100 million of product on the platform at seed. GMV, sell-through, and recovery rate are not public.
New York City (734 Broadway, 5th floor) with an India office in Gurugram (company site).
CEO Camille van Horne (Instacart Director of Product, fulfillment). CTO Sean Cashin (Instacart engineering). Fortune named Ashish Sinha as cofounder and president at the February 2025 seed. Founded 2024.
No. Private Series A company as of September 10, 2026. No ticker.
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