SPY, representing a broad market ETF, is not directly tied to natural gas storage levels or prices. However, significant changes in energy markets, such as the reported increase in natural gas storage, can influence overall market sentiment and sectors within the SPY ETF, particularly energy companies. The effect is more indirect and nuanced, depending on the broader market's interpretation of the energy sector's health and future prospects.

The United States Natural Gas Fund (UNG) is directly impacted by changes in natural gas storage levels, as these can indicate supply trends. The increase to 24B suggests a potential easing of supply constraints, which could stabilize or lower natural gas prices, affecting UNG's performance. However, the impact on UNG's price can be complex, influenced by broader market trends, seasonal demand shifts, and investor sentiment.