The Setup: An AI Pure-Play Hiding in Plain Sight
AI tools like Claude, Gemini ChatGPT and Perplexity have arrived in the mass market. I personally use them every day, both privately and professionally, and in many ways they are already superior to traditional Google search. User numbers are growing explosively. And yet, when I look at the stock market, there is no real listed pure-play on these large language model (LLM) applications. The operators like Google, who also offer AI features, are arguably more threatened than enriched by the shift. Companies like Nvidia benefit indirectly – but historically, the best business models have always been the ones with a direct relationship to the end user.
So what if I told you there is a stock that is essentially a public AI pure-play, with a profitable core community business underneath, and it trades at a negative enterprise value? Meaning: the company’s cash on the balance sheet exceeds its entire stock market capitalization. That stock is Zhihu Inc. (NYSE: ZH; HKEX: 2390).
Product and Business Model: China’s Knowledge Community Meets AI Search
Zhihu, founded in 2010 by Zhou Yuan, is China’s largest Q&A-inspired online content community – think of it as a blend of Reddit, Quora, and increasingly, Perplexity. The platform hosts high-quality, expert-driven discussions across verticals ranging from technology and science to finance, literature, and lifestyle. With over 81 million monthly active users (MAUs) as of late 2024 and daily average time spent exceeding 41 minutes per DAU, the engagement metrics are remarkable.
Zhihu monetizes through three primary revenue streams. First, paid membership: users subscribe for premium content access including audio books, curated knowledge columns, e-books, and exclusive Q&A content. In FY2025, paid membership generated RMB 1.54 billion (roughly $220 million), making it the largest segment at about 56% of total revenue. Second, marketing services (advertising and content-commerce solutions) contributed RMB 844 million ($121 million), or about 31% of revenue. Third, other revenues including vocational training and a growing intellectual property (IP) derivatives business – Zhihu’s content library has been adapted into TV shows and video series on partner platforms – contributed the remaining RMB 366 million.
But here is where it gets truly interesting: Zhihu launched its own AI search product called Zhihu Zhida (“Direct Answer”) in mid-2024, accessible at zhida.ai. Zhida leverages the platform’s massive archive of expert-generated content combined with LLMs – including integration of the powerful DeepSeek-R1 model – to deliver AI-powered search with source attribution. Unlike generic AI chatbots, Zhida can trace its answers back to real community experts, dramatically reducing hallucination risk. By Q3 2025, Zhida’s penetration rate exceeded 15%, nearly four times the level a year earlier. The platform also launched a “Professional Search” feature covering over 50 million Chinese and English academic papers – making it the first domestic product to combine AI search with a legitimate academic paper library.
CEO Zhou Yuan has positioned Zhihu as “the connection layer for humans in the AI era,” and CFO Han Wang envisions the platform evolving into something resembling a combination of X (Twitter) and LinkedIn for China’s professional community. These are ambitious visions, but the underlying assets – a decade of curated expert content, a trusted brand, and growing AI capabilities – provide real substance.
Market: Large TAM, Structural Tailwinds, and Political Realities
China’s online content and knowledge-sharing market is enormous. The country has roughly one billion internet users, and the appetite for high-quality content continues to grow, particularly among urban, educated professionals. Zhihu occupies a unique niche: unlike short-video platforms like Douyin (TikTok) or Kuaishou that dominate entertainment, Zhihu serves the long-form, expert-driven knowledge segment where depth and trust matter.
The AI search market represents an additional enormous opportunity. In China, Zhihu Zhida competes with Baidu’s Ernie bot and other general-purpose AI assistants, but it differentiates through its curated content base. Importantly, just as Reddit in the West has become a key data source and content partner for AI companies – Reddit signed licensing deals and saw its traffic benefit from AI search citations – Zhihu is positioned similarly in China. AI tools need high-quality training data and citable sources, and Zhihu’s expert content is exactly that.
The cyclicality is moderate: advertising revenue is cyclical and has been under pressure in China’s challenging macro environment, but membership and content monetization provide more recurring characteristics. Political risk is the elephant in the room – this is China, and content platforms operate under regulatory oversight from the Cyberspace Administration (CAC). However, Zhihu’s focus on professional, factual content rather than politically sensitive social media makes it relatively lower-risk within the Chinese internet landscape. The stock is dual-listed in both New York (ADR) and Hong Kong (HKEX: 2390), which provides a safety valve against potential US delisting concerns – investors can convert between the two listings.
Culture and Management: Founder-Led with a Long-Term Vision
Zhihu remains led by its founder, Zhou Yuan, who serves as chairman and CEO. In my experience, founder-led companies tend to think more long-term and make bolder strategic bets – and that is exactly what we see here. Zhou Yuan has consistently prioritized content quality over short-term revenue maximization. The deliberate decision to accept revenue declines while investing in AI capabilities and improving unit economics is a classic founder move that hired-gun CEOs rarely make.
Management has demonstrated disciplined capital allocation: they cut operating expenses by 19% year-over-year in FY2025, achieved the company’s first full-year non-GAAP profitability, and actively returned capital to shareholders through a $66.5 million share buyback (31.1 million Class A shares on the open market, plus an additional 16.6 million shares through a trustee, retiring approximately 6.3% of issued shares). Insiders own roughly 20% of the company. Citi maintains a Buy rating following the most recent earnings call, and CICC also has a Buy rating – both of which I take as a positive signal that informed analysts see the turnaround thesis.
Financials: Revenue Pain, Profitability Inflection, Massive Cash Position
Let me be honest about the numbers: Zhihu’s revenue trajectory has been ugly on the surface. FY2025 total revenue was RMB 2.75 billion ($393 million), down 24% from RMB 3.60 billion in FY2024, which itself was down from RMB 4.20 billion in FY2023. That is a significant decline. The drop is broad-based: marketing services fell 32% YoY, paid membership declined 13%, and vocational training was scaled back strategically.
However, the profitability picture tells a completely different story. FY2025 marked Zhihu’s first-ever full-year non-GAAP profitability, with adjusted net income of RMB 37.9 million ($5.4 million), reversing an adjusted net loss of RMB 96.3 million in FY2024. This was achieved through aggressive cost discipline: total operating expenses were cut by 19%, selling and marketing expenses dropped 22%, and R&D expenses fell 28%. The first three quarters of 2025 showed improving trends, with Q2 being particularly strong (GAAP net income of RMB 72.5 million). Q4 was weaker due to a one-time RMB 126.3 million non-cash goodwill impairment charge, which distorted the GAAP results.
The gross margin remained healthy at 59.9% for the full year, though Q4 compressed to 53.6% as the company broadened content offerings. For a content platform, a nearly 60% gross margin is solid.
And now the key number: as of December 31, 2025, Zhihu held RMB 4.45 billion ($636.5 million) in cash, term deposits, restricted cash, and short-term investments. At the current share price of approximately $3.50 and roughly 88 million ADS outstanding (each representing 3 ordinary shares, so about 264 million ordinary shares), the market capitalization is approximately $310 million. That means the net cash position of ~$637 million exceeds the market cap by over $300 million, resulting in a negative enterprise value of roughly negative $320 million. You are essentially being paid to own the operating business.
I think profitability should come faster than consesus, what makes Zhihu an asymetric investment.
Recent Developments and AI Strategy
Several developments in late 2025 and early 2026 are worth highlighting. In February 2025, Zhihu Zhida integrated the DeepSeek-R1 model, significantly enhancing its reasoning capabilities. The platform launched a knowledge base feature allowing users to upload files, bookmark web pages, and manage RSS subscriptions within the AI search interface – essentially building a personal knowledge management tool powered by AI.
Q4 2025 saw marketing services revenue reach RMB 234.8 million, rising 24% quarter-over-quarter, signaling an inflection in advertiser demand even as year-over-year comparisons remained negative. Daily generation of high-quality content grew over 20% YoY in Q4 and 31% for the full year. Professional AI-related content climbed over 30%, and AI-focused creators increased about 16%.
Zhihu also continued to mine its content library for intellectual property – recent TV and video adaptations of Zhihu stories performed strongly on partner platforms, validating an additional monetization angle. Into 2026, the company has continued aggressive share buybacks, with filings showing repurchases continuing through January, February, and into April 2026.
CEO Zhou Yuan’s vision to position Zhihu as the “upstream trusted data source” for Chinese LLMs could create entirely new revenue streams through data licensing or API access – similar to what Reddit has achieved in the West. This is not yet reflected in the numbers but represents genuine optionality.
Conclusion: Why This Opportunity Exists – and Why It’s Interesting
Let me be clear about why this stock trades where it does. The obvious reasons: it is a Chinese ADR, which many institutional investors will not touch due to geopolitical risk, VIE structure concerns, and potential US delisting fears. Revenue has declined for three consecutive years. The China macro environment remains uncertain. The AI business is nascent and unproven as a revenue driver. And the stock has fallen 95% from its IPO highs near $80 – that kind of chart damage scares away momentum and technical traders.
But here is the other side: you have a founder-led company that has just achieved its first full-year non-GAAP profitability, is sitting on $636 million in cash against a $310 million market cap (negative EV of ~$320 million), actively buying back shares, holds a dual listing in Hong Kong as a delisting hedge, owns one of China’s most recognized knowledge brands with 81 million MAUs, and is building a differentiated AI search product that leverages a decade of curated expert content.
I compare this to the Reddit thesis: community-driven platforms with high-quality user-generated content are not victims of AI – they are suppliers to AI. Just as Reddit’s stock has performed strongly since its IPO partly on this narrative, Zhihu could see a similar re-rating once the market recognizes the AI content licensing opportunity and the platform’s direct-to-consumer AI search product.
Is it risky? Absolutely. This is a contrarian bet on a beaten-down Chinese internet stock where execution on the AI pivot and revenue stabilization must materialize. But with the cash floor providing substantial downside protection, a near-breakeven operating business, and genuine AI optionality that the market is currently pricing at zero, I believe the risk-reward is compelling for investors with the right risk tolerance and time horizon.
Key Risks
China / Geopolitical Risk: US-China tensions, potential ADR delisting (mitigated by Hong Kong dual listing), VIE structure, and regulatory unpredictability remain the dominant risk factor.
Revenue Decline: Three consecutive years of declining revenue is a serious concern. If the decline accelerates or the AI pivot fails to generate new revenue, the company could burn through its cash position over time.
Competition: Baidu, ByteDance (Douyin), and other well-funded Chinese tech giants compete aggressively in both content and AI. Zhihu Zhida must differentiate against well-resourced rivals.
Cash Deployment Risk: While the cash position is a strength, there is always a risk with Chinese companies that cash could be deployed in value-destructive ways (acquisitions, related-party transactions) rather than returned to shareholders.
Subscriber Erosion: Paying subscribers declined from 14.1 million in Q4 2024 to 12.2 million in Q4 2025. If this trend continues, the membership revenue base could erode further.
Currency Risk: Revenues are in RMB; the ADR is priced in USD. RMB depreciation against the dollar would reduce the USD value of Zhihu’s cash and earnings.
AI Monetization Uncertainty: Zhihu Zhida is growing in penetration but has not yet proven itself as a significant revenue driver. Chinese LLMs are often offered cheaply or free, making monetization harder.
Risk Disclaimer
This article is for informational and educational purposes only and does not constitute investment advice, a recommendation, or a solicitation to buy or sell any securities. All investments carry risk, including the possible loss of principal. Past performance is not indicative of future results. The author, Philipp Haas, is indirectly invested in Zhihu Inc. (ZH) through the Haas Invest4 Innovation Fund, which may create a conflict of interest. Always conduct your own due diligence and consult a qualified financial advisor before making any investment decisions.
Zhihu Inc. (ZH) is a holding in the portfolio of the cost-efficient Haas Invest4 Innovation investment fund (invest4.net). The fund provides diversified exposure to innovative global companies at low cost. For more information, visit invest4.net.
Data sources include SEC filings (Form 6-K), company earnings calls, and publicly available financial data. All financial figures are unaudited and based on company disclosures as of March 25, 2026. Share price data is approximate as of mid-April 2026.