In an unprecedented “AI-for-equity” real estate deal, a tech investment banker has listed his $4.8 million California estate with an unusual requirement: he will only accept shares in the AI giant Anthropic as payment.
The seller, Storm Duncan, founder of the boutique investment bank Ignatious, listed the 13-acre estate in Mill Valley (Marin County) in late April 2026. The move highlights the “absolute frenzy” surrounding Anthropic stock, which recently surged to a $1 trillion valuation on secondary markets.
1. The Deal: “Diversification Play”
Duncan, a longtime Bay Area resident, described the offer as a way to rebalance his personal portfolio.
- Asset Swapping: Duncan explained that he is “over-concentrated in real estate” and “under-concentrated in AI.” He believes an early Anthropic employee or investor might be in the exact opposite position—holding millions in illiquid stock while needing a physical home.
- The Incentive: To sweeten the deal, Duncan is allowing the buyer to retain 20% of the upside value of the exchanged shares for the duration of any official lockup period.
- Scarcity Factor: Small investors currently face a “share wall,” as direct access to Anthropic’s cap table is highly restricted. This private barter allows the seller to bypass opaque secondary market fees and scarcity.
2. The Property: A $4.8M Tech Oasis
The estate is a fully furnished, high-end retreat designed for the Silicon Valley elite.
- Location: 13 prime acres in Mill Valley, offering sweeping views of the San Francisco skyline.
- Features: The home includes an infinity-edge pool, guest quarters, and luxury finishes throughout.
- The “VC” Tenant: Duncan noted that the home’s current occupant is a “high-profile venture capitalist,” adding to the property’s prestige within the tech community.
3. Context: Anthropic’s “Epic Run”
The timing of the listing coincides with Anthropic’s valuation nearly tripling in just three months—from $380 billion in January to $1 trillion in April 2026.
- The “Claude Code” Effect: Much of the hype is driven by the massive commercial success of Claude Code, Anthropic’s AI coding agent, which has significantly boosted the company’s revenue projections.
- Secondary Market FOMO: Investors are currently “hounding” Anthropic shareholders with daily offers. At a $1 trillion valuation, Anthropic has technically surpassed its rival OpenAI (currently trading at $880 billion on marketplaces like Forge Global).