I. Underlying Asset Value Logic (Most Fundamental Difference)

1. Stock Market
Stocks represent equity in a listed company; the company has revenue, products, cash flow, fixed assets. Long-term stock prices are supported by corporate profits, dividends, and performance growth; even if stock prices fall, the company's physical entity remains, and liquidation assets provide a safety net. Regulatory requirements mandate financial disclosures and audits, making information verifiable.
2. Cryptocurrency Circle
99% of tokens lack operational entities, revenue, or dividends; BTC has no profit, and most altcoins only have whitepapers without real revenue. Prices rely entirely on consensus, new capital inflows, and emotional speculation. Once funding dries up or consensus collapses, token value can drop to zero with no backing assets.

II. Differences in Trading Rules
1. Trading Hours
Stock Market: A-shares open during fixed hours Monday to Friday, closed on holidays, providing a cooling-off period; US stocks also close on weekends.
Crypto Circle: Trading occurs 24/7, 365 days a year, with no circuit breakers or closing times. Emotional sell-offs and rallies can happen at any moment.
2. Price Fluctuation Limits
Stock Market: A-shares have ±10% fluctuation limits, Sci-Tech Innovation Board (STAR Market) 20%; extreme market conditions have circuit breakers, preventing single-day halts or tenfold surges.
Crypto Circle: No fluctuation limits; daily increases or decreases of 50%, doubling, or dropping to zero are common.
3. Leverage Ecosystem
Stock Market: Formal margin trading leverage is low (1-2x), with high thresholds and strict regulation;
Crypto Circle: Exchanges freely offer 10–100x leverage, with hundreds of dollars enabling high-leverage contracts, and liquidation is common.

III. Regulation and Fund Security (Most Critical)
1. Stock Market: Strong regulation by securities commissions worldwide, licensed brokerages, third-party fund custody, illegal activities like insider trading, market manipulation, and price rigging are prohibited. Losses are part of investment risk, and victims can report crimes to seek rights.
2. Cryptocurrency Circle: China fully bans issuance and trading of virtual currency tokens; compliant exchanges do not exist domestically. Platforms without licenses may cut off internet access, manipulate charts, or run off with funds. Market manipulation, "rabbits" (small traders), and pump-and-dump schemes lack legal constraints; victims of principal theft have little legal recourse.

IV. Participant Structure and Speculation Styles
1. Stock Market: High proportion of institutional investors (funds, social security, foreign capital), with some long-term value investing; capital flows are relatively rational. Thematic speculation exists but is tied to fundamentals.
2. Cryptocurrency Circle: Dominated by retail investors and hot money, mostly engaging in short-term trading, meme coins, and news-driven speculation; project teams can issue tokens at low cost, pre-sell, and dump on retail investors with minimal barriers.

V. Supply of Chips (Ownership)
Stocks: Company issuance and unlocking require regulatory approval; circulating shares are controllable.
Tokens: Project teams hold large amounts of unlocked tokens, capable of large-scale dumping at any time; many unlocking details are not publicly disclosed.

Concise Summary
Stock Market: Earns from company growth, with rules, regulation, and physical assets as safety nets.
Crypto Speculation: Earns from latecomers entering the market, with zero rules, no regulation, and no underlying safety net; the game is more about speculation than investment.