Interestingly, some research suggests that having less money (leverage constraints) can actually improve outcomes because it forces investors to sell losing assets sooner to fund new opportunities, rather than holding on to them indefinitely. 3. Market Sentiment Influences

Deep academic dives into why humans choose to buy or sell reveal significant psychological biases.

A 2023 study found that investors who make "sell or buy" decisions together (with family or friends) are significantly less overconfident and make better choices than those deciding alone.

The HRPM Framework (mentioned above) is significant for managing the "commission fee" problem—it learns that simply knowing whether to buy or sell isn't enough; you must also minimize the cost of the trade itself. 2. Behavioral & Decision-Making Research

Research from the American Economic Association shows that investors are generally more likely to sell a security when they have a gain rather than a loss, even if holding onto the "loser" is financially detrimental.

A popular approach where a "trader agent" learns to maximize profits through trial and error. Papers in this field often define actions simply as -1 (sell), 0 (hold), and 1 (buy).

Studies have found that combining Convolutional Neural Networks (CNN) with Long Short-Term Memory (LSTM) models offers higher accuracy than simple time-series methods.