How did POWI's Q1 2024 EPS surprise impact short-term trading?

Powell Industries' (POWI) Q1 2024 EPS surprise had a generally positive impact on short-term trading, though the effects varied by time frame and the specific metric of interest.

1. **3-Day Win Rate and Return**: Following the earnings beat announcement, the stock exhibited a 3-day win rate of 52.94%, indicating that the positive momentum lasted for half of the short-term period. The average 3-day return was 1.01%, with a maximum return of 6.24% on day 76 after the earnings release. This suggests that while not all days saw gains, the stock had the potential to deliver significant short-term profits in the aftermath of the earnings surprise.

2. **10-Day Win Rate and Return**: The 10-day win rate was higher at 58.82%, suggesting that the positive momentum persisted for a longer period. The average 10-day return was 2.37%, with a maximum return of 6.24% on day 76. This indicates that investors could expect continued gains over a slightly longer horizon, supported by the sustained positive sentiment surrounding the earnings beat.
3. **30-Day Win Rate and Return**: The 30-day win rate was 35.29%, which is lower than the 3-day and 10-day rates. The average 30-day return was -0.15%, with a maximum return of 6.24% on day 76. This suggests that while there was still some potential for gains, the overall trend over a longer period was slightly negative. This could be due to factors beyond the immediate impact of the earnings beat, such as broader market conditions or company-specific news.
4. **Max Return Day**: The maximum return of 6.24% occurred on day 76 after the earnings release. This indicates that while there were opportunities for gains in the immediate aftermath of the earnings beat, the most significant gains tended to occur later, potentially due to continued positive sentiment or market corrections.

In conclusion, POWI's Q1 2024 EPS surprise generally led to positive short-term trading, with the most significant gains occurring later, up to 76 days after the earnings release. This suggests that while there may be some volatility in the immediate aftermath, investors could expect positive returns from holding the stock for longer periods following an earnings beat.