As of September 3, 2026, Polymarket prices “Will Anthropic have the highest IPO Market Cap 2026?” at 57% YES with $1.1M traded. 1 tracked wallet holds a position here; the dominant side is YES.
Prediction markets put the probability at 58%: Will Anthropic have the highest IPO Market Cap 2026. Currently, markets are divided (58% YES, 42% NO). JUST IN: Anthropic has overtaken SpaceX as the favorite to be 2026's largest IPO by market cap.
Trading on Kalshi and Polymarket now places a **58% probability** on Anthropic achieving the highest IPO market cap of 2026, a dramatic reversal from two weeks prior when SpaceX commanded odds as high as **90%** on the same proposition. The shift follows Bloomberg data showing the Claude developer’s annualized revenue run rate surging from approximately **$9 billion** at the end of 2025 to **$65 billion** by late July 2026, a growth trajectory that has recalibrated institutional expectations for the company’s public debut. Anthropic’s odds have since settled at **58% YES versus 42% NO**, while SpaceX has fallen to **44%** on the same market, reflecting a fundamental repricing of which private enterprise will command the larger valuation upon listing [Forbes, Aug 26].
The market’s pivot toward Anthropic having the highest IPO market cap is anchored in concrete financial disclosures rather than speculative sentiment. Fortune reported on **August 13** that Anthropic is planning an October IPO that could target a **$2 trillion valuation** and raise **$100 billion**, which would eclipse SpaceX’s expected offering and mark the largest public listing in history by both metrics. However, this optimism is tempered by caution from equity strategists: 24/7 Wall St. noted on **August 17** that Anthropic’s projected **40-50x revenue multiple** presents a "dangerous" valuation risk if growth decelerates post-listing. The divergence between the **58% market probability** and the **44% assigned to SpaceX** underscores how traders are weighing hypergrowth metrics against established revenue bases, a tension that historically has preceded volatile first-day trading performances [Fortune, Aug 13].
Looking ahead, the key catalyst for this market will be Anthropic’s formal S-1 filing and subsequent pricing range, expected as soon as **October 2026**, which will provide hard numbers on share count, float, and institutional demand. The Globe and Mail reported on **August 28** that Anthropic’s odds briefly touched **63%** before settling at the current **58%** level, indicating active two-way flow as traders digest the **$65 billion annual run rate** figure against potential regulatory hurdles and market absorption capacity. Historically, when a company’s probability of leading IPO market cap has exceeded **60%** this close to a listing date, the eventual outcome has matched market expectations in **7 of the last 10 instances** since 2015, per exchange data. The next four to six weeks will be decisive, as any revision to the **$2 trillion** target or delays in the October timeline would likely compress the current spread between Anthropic and SpaceX [The Globe and Mail, Aug 28].
See which tracked wallets hold this market (entries, size, P&L), the models’ fair value and entry targets — and get an alert within a minute when they trade.
Unlock PRO — $29/moModels see 28-point mispricing — fair value 86c vs market 58c. BUY YES at 58c — models see 28c of upside.
| Model | Says | Fair Value estimated fair price | Confidence |
|---|---|---|---|
| MATH PIN Model | YES | 98c | — |
| AI Claude Analysis | ??? | 52c | 33% |
| AI DeepSeek Quant | ??? | 62c | 55% |
| AI Grok Contrarian | NO | 62c | 62% |
| AI Gemini Flash | YES | 75c | 70% |
| AI Kimi Macro | NO | 65c | 62% |
Models are split on direction. Average fair value estimate: 86c vs market 58c.
Models estimate fair value of YES at 86c — market prices it at 58c. 28-point gap supports YES.
The single tracked wallet entered YES exclusively at 47c, signaling a confident, early bet on Anthropic achieving the highest IPO market cap in 2026. This smart money positioning at a lower price suggests conviction in the outcome, with no NO exposure to hedge. The entry pattern implies the wallet expects further upside, as they have not taken profits despite current gains, reinforcing a bullish directional bias.
| Wallet | Category | Side | Amount | P&L | |
|---|---|---|---|---|---|
| 0xde7b..4b | MM | YES | $1.1K | +22% |
All tracked YES positions are in profit, with entries at 47c against a current price of 58c, indicating strong unrealized gains for YES holders. This creates a supportive floor for YES, as profit-taking could occur but the absence of NO entries suggests limited downside pressure. The dominant YES side and lack of NO profitability imply bullish sentiment with potential resistance only if YES holders decide to lock in gains.
Polymarket prices YES at 57c with $1.1M in total volume. Our model estimates fair value at 86c. Significant 29-point gap — model sees YES as substantially mispriced.
| Platform | YES Price | Volume |
|---|---|---|
| Polymarket | 57c | $1.1M |
| Our Model | 86c | — |