Primer

Zhihu Inc. Primer

Zhihu (NYSE: ZH; HKEX: 2390) operates China's largest Q&A-inspired online content community, monetizing 12.2M paid members and an advertiser base through marketing services, paid memberships, vocational training and content-commerce. The investment story is a sharp pivot: revenue has been deliberately shrunk by roughly a quarter to retire low-margin, capital-intensive lines (notably vocational training), while management has reached its first-ever full year of non-GAAP profitability and is now repositioning the company around AI-powered search, creator tools and content IP. With a balance sheet carrying RMB 4.5 billion in cash against a market capitalization of roughly HK$2.2 billion, the stock trades below its net cash and the equity case rests on whether the AI-driven product cycle stabilizes top-line erosion. Zhihu reports financials in RMB; HK$ figures below are translated at the period-end cross-rate via USD (see note at end).

The share price has roundtripped within a wide post-IPO recovery band: down ~90% from 2021 peaks, an 8x rally from late-2023 lows through Q3 2025 as the cost-out story took hold, and then a give-back through 2026 as investors digested the FY2025 revenue contraction and a non-cash goodwill impairment.

Revenue peaked at HK$4.6B in FY2023 and has since fallen for two consecutive years as management pruned lower-quality revenue streams. Operating losses, however, have narrowed sharply — from HK$1.7B in FY2021 to ~HK$0.4B in FY2025 — and the company reached its first full year of non-GAAP profitability in FY2025 (adjusted net income RMB 37.9M / ~HK$40M, versus a RMB 96.3M / HK$103M adjusted net loss in FY2024).

Business In One Page

Zhihu (founded 2010, IPO on NYSE in March 2021, dual primary HKEX listing April 2022) is the largest Q&A-inspired online content community in China, where users ask questions, post long-form answers, follow creators and consume curated knowledge — primarily around work, study, technology, lifestyle and consumer decisions. Average daily time spent per user exceeded 41 minutes in 2025, with daily creation of high-quality content up 20% YoY and professional AI-related content up 30% YoY (Q4 2025 release).

Revenue is split across three pillars (Q4 2025 mix as proxy for run-rate):

• Marketing services (RMB 234.8M / ~36% of Q4): Brand and performance ads served within the feed and on knowledge topics. The Idea Plus product saw client count up 62% sequentially and average daily client spend up 200% sequentially in Q4 2025 — the core green shoot in the recovery thesis.
• Paid membership (RMB 333.5M / ~52% of Q4): Premium subscription to long-form content (including a meaningful online literature/serialized fiction component) with 12.2M average monthly paid members in Q4 2025, improving renewal rates and ARPU sequentially.
• Other revenue (RMB 75.2M / ~12% of Q4): Includes vocational training (deliberately downsized), content commerce, and emerging AI-product monetization.

Geography is overwhelmingly mainland China, with a dual-listed structure (NYSE ADS + HKEX ordinary). Unit economics improved in 2025 on a 53.6% Q4 gross margin (54.6% FY2025 implied), partially offset by goodwill impairment. The most important company-specific driver is the AI product cycle: Zhihu Zhida direct MAUs grew over 260% YoY in 2025, with double-digit click-through rate gains on AI answer cards and a 16%+ rise in average daily search queries per DAU. Management has framed AI as the "core growth engine for 2026."

Valuation And Balance Sheet Snapshot

The equity trades below net cash, which is the defining valuation fact:

• Market cap: HK$2.2B (price HK$7.93 on May 18, 2026, source Alpha Spread / HKEX live data).
• Cash & investments: RMB 4,451.2M (~HK$4,731M / ~HK$4.7B) at FY2025 year-end, comprising cash, term deposits, restricted cash and short-term investments (FY2025 results release, March 25, 2026).
• Implied enterprise value: materially negative — the market is assigning negative value to the operating business. Yahoo Finance shows trailing enterprise value of −$320M against $292M market cap.
• Multiples: With FY2025 revenue of HK$2.93B and op losses of HK$407M, multiples-based framing is awkward: EV/Sales is negative; price/book ~0.48x and trailing P/E ~19.8x (Yahoo, on a recovering bottom line) tell different stories. Investors are effectively buying the cash and a free option on the AI/AI-IP roadmap.
• Capital returns: Zhihu repurchased 31.1M Class A shares for US$66.5M on the open market in 2025, plus 16.6M shares for US$23.4M via a trustee program (cumulative trustee buybacks reached 6.29% of issued ordinary shares).

The likely framing: bears see a Chinese internet platform with a still-shrinking top line and execution risk on AI monetization; bulls see optionality on a debt-free, cash-rich, repurposing community with an active and well-priced buyback.

What Changed Recently

• First full-year non-GAAP profitability (FY2025): Adjusted net income of RMB 37.9M versus −RMB 96.3M in FY2024 — described by CEO Yuan Zhou as a "structural inflection point" (FY2025 earnings release, March 25, 2026).
• Revenue reset: FY2025 revenue fell 23.6% YoY to RMB 2,749M (~HK$2.93B) as management deliberately wound down lower-quality revenue, primarily in vocational training, before pivoting to higher-margin AI and content IP (Stock Analysis FY2025 standardized financials).
• Marketing services rebound: Q4 2025 marketing services revenue rose 24% sequentially to RMB 234.8M on better client quality, deeper industry penetration and new ad-product ramp; Idea Plus client count +62% sequentially and average daily client spend +200% sequentially.
• AI product surge: Direct MAUs of Zhihu Zhida +260% YoY; IP-related projects revenue +21% YoY; AI-related professional content creation +30% YoY (Q4 2025 release). Management identified AI as 2026's core growth engine.
• Goodwill impairment: A one-time, non-cash goodwill impairment charge of RMB 126.3M lifted reported Q4 operating expenses to RMB 608.7M, contributing to a GAAP Q4 net loss of RMB 210.8M; ex-impairment, adjusted Q4 net loss was RMB 39.4M.
• 2025 Form 20-F filing and Q1 2026 release scheduled: Zhihu filed its 2025 annual report on Form 20-F on April 17, 2026 (globenewswire.com), and will report Q1 2026 financial results on June 3, 2026 (May 11, 2026 announcement).

Risks And Watchpoints

• Revenue trajectory: A 23.6% FY2025 revenue decline is steep; until sequential growth resumes across all three pillars (not just marketing services), the "recovery" narrative remains qualitative. Watch Q1 2026 print on June 3.
• Goodwill impairment signal: The RMB 126.3M Q4 2025 goodwill impairment implies management has marked down the carrying value of past acquisitions — an admission that prior M&A returns disappointed. Future quarters may reveal further write-downs.
• VIE structure and PRC regulatory overhang: Zhihu Inc. is a Cayman holding company that controls its mainland operations via VIEs, with dividends from China-based subsidiaries subject to PRC restrictions (per its 2023 20-F filing on SEC.gov). Regulatory shifts in content moderation, paid education, or VIE enforceability remain live risks.
• Management turnover: CTO Bin Sun resigned effective September 30, 2025 (per Simply Wall St management timeline) — a notable departure given the company's AI-first 2026 strategy.
• Concentration in advertising cyclicality: Marketing services is sensitive to China's advertising spend cycle; the Q4 sequential bounce is encouraging but not yet a trend.
• Dual-listing and ADR risk: Continued NYSE-listing eligibility (HFCAA / PCAOB-related risks) and HK liquidity are watch items; sustained low trading volume at HK$2.2B market cap can amplify volatility.

What To Verify Next

• Q1 2026 results (June 3, 2026): Confirm whether marketing services sequential strength holds and whether paid membership reaccelerates from the 12.2M monthly base.
• AI monetization specificity: Look for first concrete revenue contribution numbers from Zhihu Zhida, AI search, AI reading and AI-driven IP — currently disclosed only as engagement growth rates.
• Updated cash and buyback cadence: Confirm RMB 4.5B cash balance trajectory after FY2025 free cash flow disclosure and quantify the 2026 buyback authorization remaining.
• 20-F detail (filed April 17, 2026): Read risk factors, VIE-related disclosures, segment economics and any restatements or audit-firm disclosures in the 2025 Form 20-F on the SEC's EDGAR.
• CTO succession: Confirm replacement for Bin Sun and any reorganization of the AI engineering function given the 2026 AI-first strategy.

Note: Zhihu reports financial statements in RMB; HK$ figures shown here are translated via USD at period-end FX rates (HKD↔USD from frankfurter.app; CNY↔USD at period-end exchange rates). Ratios, margins and member counts are unitless and reported as disclosed. Pre-2024 share prices in the chart above are approximations from public market history and should be interpreted as a trajectory rather than precise closes.