Underlying Asset Performance: ULTY.US tracks the ProShares UltraPro QQQ, so its price is directly affected by the performance of that fund, which in turn tracks the Nasdaq-100 Index.

Market Sentiment: Overall investor confidence and risk appetite influence the demand for leveraged ETFs like ULTY.US, impacting its price.

Leverage Factor: ULTY.US is a triple-leveraged ETF, magnifying the daily returns of the Nasdaq-100, thus also magnifying price fluctuations.

Trading Volume/Liquidity: Higher trading volume generally means tighter bid-ask spreads and easier price discovery, but low liquidity can lead to price volatility.

Expense Ratio and Management Fees: The fund's operating costs are deducted from its returns, impacting its price over time.

Rebalancing Costs: ULTY.US rebalances its portfolio daily to maintain its 3x leverage, incurring transaction costs that affect the fund's value.

Interest Rates: Changes in interest rates can indirectly affect the valuations of the companies within the Nasdaq-100, influencing the price of ULTY.US.

Economic Data: Economic indicators like GDP growth, inflation, and unemployment can impact market sentiment and the performance of the Nasdaq-100, subsequently affecting ULTY.US.