Largest Positive Opening Gaps for HAL

How does HAL usually behave after a large gap-up move?

Using the 12 largest gap-up moves over the last 3 years in HAL stock, the average move was +4.1% with the single largest opening gap of +9.0% occurring on 5-Jan-2026. Following the opening, HAL tended to drift lower to the closing price 67% of the time for an average loss of -1.2%. The following day, HAL stock price averaged +1.1% gains, with up moves more frequent than down moves. The stock was up 58% of the time in that period one day after these significant gaps. Earnings dates have been excluded from this analysis.

Catalysts

4 of HAL's 12 largest moves corresponded with a large gap up in the overall market. 3 of the moves coincided with a company-issued press release.

Open-to-High and Open-to-Low

The largest percentage gain from the open to the high of the day was +4.0% on 2-Jun-2023, while the biggest drop from the open to the low was -8.6% on 8-Apr-2025. On average, the HAL stock price gain from the opening price to the highest point of the day was +1.7%, and the average drop to the lowest point was -2.8%.

Day Drift Open-to-Close

The best performance in HAL stock price from opening price to closing price (referred to as the "drift" for the day) was on 9-Oct-2023 for a +3.3% gain after the stock gapped up +3.4% at the open. The worst worst return from the opening price to the closing price was on 8-Apr-2025 when the stock lost -6.8% after the stock gapped up +3.4%. Overall in the 12 available observations, the stock drifted lower 67% of the time for an average loss of -1.2%.