Rivian Shares Dip as $580M Volume Ranks 160th in U.S. Equities

Rivian Automotive (RIVN) closed lower by 0.95% on Sept. 26, with a trading volume of $580 million, ranking 160th among U.S. equities. The stock’s performance reflected mixed investor sentiment amid evolving market dynamics in the electric vehicle sector.

Analysts highlighted the company’s strategic focus on expanding its commercial vehicle segment, including partnerships with logistics firms to bolster long-term demand. However, near-term challenges persist, such as production delays at its Normal, Illinois plant due to supply chain bottlenecks. These factors contributed to cautious trading behavior, with institutional investors observed trimming positions ahead of quarterly earnings reports.

To run this back-test I need to turn your idea into a day-by-day trading “signal file” that the back-test engine can read. A few details are still open: 1. Universe • Do you want all U.S. listed common stocks (≈ 4 000 tickers), or a subset such as the S&P 500 constituents? 2. Ranking timestamp • Should the ranking be based on the previous day’s total volume (so we buy at today’s open), or on today’s intraday volume (which would require intraday data)? 3. Execution prices • Buy at the next day’s open and sell at the day’s close (typical), or buy at today’s close and sell tomorrow’s close? 4. Slippage / fees • Any commission or slippage assumption? Once those items are fixed I can: • Download daily volume data for every stock in the universe from 2022-01-03 to the present. • Generate, for each trading day, the list of the 500 tickers with the highest volume and create the corresponding 1-day holding signals. • Feed the signal file into the strategy back-test engine and return the performance statistics and chart.