Largest Negative Opening Gaps for REGN

How does REGN usually behave after a large gap-down move?

Using the 12 largest gap-down moves over the last 3 years in REGN stock, the average move was -3.3% with the single largest opening gap of -14.8% occurring on 30-May-2025. Following the opening, REGN tended to drift higher to the closing price 58% of the time for an average gain of +0.5%. The following day, REGN stock price averaged -0.2% losses, with up moves and down moves occurring equally. Earnings dates have been excluded from this analysis.

Catalysts

1 of REGN's 12 largest moves corresponded with a large gap down in the overall market. 7 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 +7.9% on 9-Apr-2025, while the biggest drop from the open to the low was -6.0% on 30-May-2025. On average, the REGN stock price gain from the opening price to the highest point of the day was +2.1%, and the average drop to the lowest point was -2.4%.

Day Drift Open-to-Close

The best performance in REGN stock price from opening price to closing price (referred to as the "drift" for the day) was on 9-Apr-2025 for a +7.2% gain after the stock gapped down -3.4% at the open. The worst worst return from the opening price to the closing price was on 30-May-2025 when the stock lost -5.0% after the stock gapped down -14.8%. Overall in the 12 available observations, the stock drifted higher 58% of the time for an average gain of +0.5%.