Merus Edges Up 0.13% But Trails in Daily Trading Activity at Rank 445

On October 7, 2025, Merus (MRUS) closed with a 0.13% gain, trading at a volume of $0.25 billion, placing it at rank 445 in terms of trading activity for the day. The stock’s modest upward movement reflects limited immediate catalysts in the market, with no major news directly linked to the company’s operations or strategic developments. Analysts noted that the volume level suggests a relatively low level of institutional or retail investor engagement compared to its peers in the broader market.

To assess the stock’s performance in a broader context, a back-test framework requires clarification on several parameters. Key considerations include defining the stock universe—whether to use all U.S.-listed common stocks or focus on a narrower index like the S&P 500. The trade-price convention must also be established, such as whether to use closing prices for entry and exit or include opening prices. Additionally, the weighting scheme within the daily portfolio (e.g., equal-weight, volume-weighted, or market-cap-weighted) and assumptions about transaction costs or slippage will shape the accuracy of the back-test results. These details are critical to constructing a reliable equity curve for further analysis.