Underlying Asset Performance: 515180.SHG tracks a specific index. Its price closely reflects the performance of the securities within that index.

Supply and Demand: High demand for the ETF increases its price, while increased selling pressure lowers it.

Market Sentiment: Overall market optimism or pessimism can influence ETF prices, even if the underlying assets remain stable.

Expense Ratio: While not a direct driver of daily price fluctuations, a higher expense ratio can impact long-term returns and potentially influence investor interest.

Trading Volume & Liquidity: Higher trading volumes usually mean tighter bid-ask spreads and easier price discovery, which can indirectly impact price stability.

Index Composition Changes: Changes to the underlying index (additions or deletions of securities) can cause the ETF to rebalance and impact its price.

Economic Conditions: Macroeconomic factors like interest rates, inflation, and GDP growth can indirectly affect the performance of the underlying assets and thus the ETF price.