Asset Performance: The underlying assets' performance directly impacts SYI.AU's price; strong asset performance drives price up.

Supply and Demand: High demand for SYI.AU increases its price, while increased supply decreases it.

Interest Rates: Rising interest rates can make bonds (potentially held within the ETF) less attractive, lowering the ETF's price.

Market Sentiment: Overall investor confidence and market conditions influence the ETF's price, positive sentiment leads to an increase.

Expense Ratio: A high expense ratio can indirectly affect returns; the ETF has to perform that much better to justify the cost.

Currency Fluctuations: If the ETF holds international assets, currency fluctuations can impact the AUD value of those holdings.

Index Tracking: How closely SYI.AU tracks its benchmark index affects price deviations; better tracking means lower deviations.

Liquidity: Higher liquidity typically reduces price volatility, impacting buying and selling costs.