Underlying Index Performance: XACT-BULL.ST aims to deliver twice the daily performance of its underlying index, so the index's movements strongly impact its price.

Leverage and Compounding: The 2x leverage means amplified gains and losses, while daily rebalancing leads to compounding effects that can deviate from twice the index's longer-term performance.

Trading Volume and Liquidity: Higher trading volume generally leads to tighter bid-ask spreads, improving price efficiency, while lower liquidity can increase volatility and trading costs.

Management Fees and Expenses: The ETF's expense ratio reduces returns over time, impacting its relative performance compared to the underlying index.

Market Sentiment: Overall investor sentiment towards the market or specific sectors tracked by the underlying index can influence demand for XACT-BULL.ST, affecting its price.

Interest Rates: Interest rate changes can impact the cost of maintaining the leveraged position, indirectly affecting the ETF's price.

Rebalancing Costs: Costs associated with daily rebalancing to maintain the 2x leverage can erode returns.

Tracking Error: Imperfect tracking of the underlying index due to various factors can affect the ETF's price.

Supply and Demand: Basic supply and demand dynamics also play a role; increased demand pushes the price up, while increased supply pushes it down.