Anthropic Stock: Can You Buy It? The $965B Company Blocked Secondary Sales

You cannot buy real Anthropic stock today — and since May 11, 2026, the company has actively voided the secondary-market routes that used to offer a workaround. That's the short answer. The longer answer is more interesting.

Search "Anthropic stock" and you'll land on listing pages at Forge Global and Hiive that look like functioning marketplaces. They aren't, at least not for new buyers. Anthropic's $965 billion Series H and its reported push toward a $2 trillion IPO valuation have made it one of the most-wanted private equities on earth, which is exactly why the company moved to shut down the unauthorized channels selling access to it. We track its private pricing on our AI valuations dashboard.

Can You Buy Anthropic Stock Today?

You cannot buy Anthropic stock on a public exchange, and unlike OpenAI's still-functioning secondary market, Anthropic has gone further and actively shut down the private workarounds. On May 11, 2026, Anthropic declared that it does not permit SPVs to acquire its stock and that any transfer of shares to one is void under its transfer restrictions — a statement that named eight platforms directly.

The named platforms were Open Door Partners, Unicorns Exchange, Pachamama, Lionheart Ventures, Hiive, Forge Global, Sydecar, and Upmarket. The market reaction was immediate: a tokenized Anthropic product on the Solana-based platform PreStocks fell from roughly $1,400 to $900 within a day, a nearly 40% drop that shows how much of the "market" in these shares was really just confidence in a transfer that the issuer had never approved.

Five Ways to Get Anthropic Exposure — Ranked by What Actually Works

There is no "buy Anthropic stock" button, and after May 2026 there are fewer real workarounds than there were for OpenAI. Ranked from most to least viable:

Route-by-Route Comparison

Figures are August 2026 estimates blended from Anthropic's May 2026 transfer-restriction statement, Forge Global and Hiive platform pages, and RVI's public fund disclosures. Platform inventory changes frequently — verify current availability directly before attempting any transaction.

Why Anthropic Blocked Its Own Secondary Market

The obvious read is defensive: a company approaching a $2 trillion IPO target doesn't want unofficial platforms setting a price for its stock, especially tokenized products that can swing 40% on a single tweet-length disclosure. There's also a cap-table hygiene angle — unauthorized SPV layers make it harder for a company to know who actually owns its equity heading into an S-1, and regulators scrutinize exactly that during IPO review.

Axios reported that OpenAI issued a similar warning around the same time, suggesting this wasn't one company's isolated decision but a shared response among the largest private AI labs to a secondary-share ecosystem that had outrun what either company had actually authorized.

What the headline misses

The "$965B company, $2T IPO target" framing skips the fact that the $2 trillion figure is investor speculation reported by six backers to the Financial Times, not a number Anthropic's own executives have confirmed even internally. It also assumes revenue keeps compounding at a pace — from $14B to $47B in about three months — that has no real precedent in enterprise software and would need to roughly double or triple again by year-end to justify the multiple implied at $2 trillion.

It's also worth separating "blocked" from "worthless." Anthropic voiding unauthorized transfers doesn't cancel the underlying equity that legitimate shareholders — employees, VCs, and other authorized holders — actually own. It cancels the claim that an SPV or token issuer had a right to sell a slice of someone else's shares to you without the company's sign-off. Existing option holders and direct cap-table investors are unaffected; it's the secondary layer built on top of their positions that got zeroed out.

How Anthropic Compares to OpenAI's Secondary Market

The contrast with OpenAI is the most useful data point here. OpenAI still runs a functioning secondary market — Forge quotes shares near $721.85, EquityZen and Hiive operate SPVs, and OpenAI itself completed a $7 billion employee tender on August 10, 2026 at its $852 billion valuation. Anthropic, at a higher $965 billion valuation, has instead closed that door for anyone without a direct, company-approved relationship.

That leaves RVI in an unusual position: it's now one of very few vehicles offering any retail-accessible Anthropic exposure at all, since the SPV and tokenized routes that used to compete with it for that role no longer have the issuer's blessing. Track how Anthropic's private pricing moves against OpenAI and SpaceX on our tech IPO tracker.