Largest Negative Opening Gaps for MKSI

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

Using the 12 largest gap-down moves over the last 3 years in MKSI stock, the average move was -4.9% with the single largest opening gap of -5.7% occurring on 3-Apr-2025. Following the opening, MKSI tended to drift lower to the closing price 58% of the time for an average loss of -1.0%. The following day, MKSI stock price averaged +0.6% gains, with up moves more frequent than down moves. The stock was up 67% of the time in that period one day after these significant gaps. Earnings dates have been excluded from this analysis.

Catalysts

7 of MKSI's 12 largest moves corresponded with a large gap down 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 +21.4% on 7-Apr-2025, while the biggest drop from the open to the low was -16.5% on 3-Apr-2025. On average, the MKSI stock price gain from the opening price to the highest point of the day was +4.2%, and the average drop to the lowest point was -4.9%.

Day Drift Open-to-Close

The best performance in MKSI stock price from opening price to closing price (referred to as the "drift" for the day) was on 7-Apr-2025 for a +10.1% gain after the stock gapped down -5.1% at the open. The worst worst return from the opening price to the closing price was on 3-Apr-2025 when the stock lost -16.2% after the stock gapped down -5.7%. Overall in the 12 available observations, the stock drifted lower 58% of the time for an average loss of -1.0%.