Underlying Index Performance: 100D.LSE tracks the performance of its underlying index. Fluctuations in that index directly impact the ETF's price.

Supply and Demand: Market forces of supply and demand influence the ETF's trading price. Higher demand tends to increase the price, while increased supply can decrease it.

Interest Rates: Changes in interest rates can affect investor sentiment towards equities, thereby impacting demand for the ETF and its price.

Economic Conditions: Overall economic health, including factors like GDP growth, inflation, and unemployment, can affect market confidence and influence the ETF's price.

Currency Fluctuations: If the underlying assets are denominated in a foreign currency, exchange rate fluctuations can impact the ETF's value when translated back to the base currency.

Dividend Payments: Dividend distributions from companies within the underlying index will affect the ETF's net asset value (NAV), influencing its market price.

ETF Management Fees: While management fees don't directly change the market price moment to moment, they affect the ETF's NAV and overall return, which can indirectly influence its attractiveness and price over time.