Underlying Asset Performance: 091220.KO's price is primarily driven by the performance of the assets it holds. If the underlying assets increase in value, the ETF's price will likely increase, and vice versa.

Supply and Demand: Market forces of supply and demand impact ETF prices. Higher demand than supply pushes the price up, while higher supply than demand pushes it down.

Expense Ratio: The expense ratio, or the annual fee charged to manage the ETF, affects its returns and, indirectly, its price. Higher expense ratios can slightly reduce the potential appreciation.

Trading Volume: High trading volume generally leads to tighter bid-ask spreads, making the ETF more liquid and potentially affecting the price fluctuations.

Market Sentiment: Overall investor sentiment towards the specific sector or asset class that 091220.KO tracks significantly affects its price. Positive sentiment can drive prices up, while negative sentiment can drive them down.

Interest Rates: Interest rate changes can affect the valuations of assets held by 091220.KO, especially if it holds fixed-income securities or companies sensitive to interest rate changes.

Economic Conditions: Broader economic conditions such as GDP growth, inflation, and unemployment can influence investor confidence and asset valuations, subsequently impacting the ETF's price.