Targa Resources Shares Dip as Trading Volume Surges to $280M, Ranking 458th in U.S. Equities

Targa Resources (TRGP) saw a 0.92% decline in trading on Sept. 30, 2025, with a daily trading volume of $280 million, up 37.39% from the previous day. The stock ranked 458th in trading activity among U.S. equities for the session.

Market participants noted heightened short-term volatility in the energy infrastructure sector following a regulatory filing disclosing adjustments to midstream operations. The filing highlighted strategic reallocation of capital toward liquids-rich basins, which analysts suggest could influence midstream peers' operational dynamics but may require time to manifest in earnings visibility for Targa.

Analysts emphasized that the stock's near-term trajectory remains sensitive to commodity price correlations and interest rate expectations. With energy infrastructure assets typically exhibiting low beta characteristics, the recent underperformance against broader market indices was attributed to sector-specific positioning rather than macroeconomic shifts.

To run this study properly, a dynamic, day-by-day list of the 500 highest-volume U.S. stocks must be generated and treated as an equal-weighted portfolio rebalanced daily. Our current back-test engine requires an intermediate file containing daily portfolio returns, which necessitates defining the equity universe (e.g., all primary-listed U.S. stocks on NYSE, NASDAQ, and AMEX) and specifying intraday pricing parameters for entry/exit points. Please provide preferences for these two inputs to proceed with the calculation plan.