Does Onto Innovation (ONTO) stock go up or down depending on the month?
Onto Innovation month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +28.0% | +6.8% | -5.0% | +43.9% | -12.5% | +46.5% | -31.7% | |||||
| 2025 | +22.9% | -28.9% | -16.7% | +0.5% | -24.6% | +9.8% | -6.1% | +11.9% | +21.9% | +4.4% | +6.1% | +10.3% |
| 2024 | +5.6% | +14.0% | -1.7% | +2.4% | +16.8% | +1.3% | -12.9% | +11.5% | -2.7% | -4.4% | -17.2% | +1.5% |
| 2023 | +15.5% | +4.9% | +6.6% | -7.9% | +32.6% | +8.5% | +6.7% | +11.8% | -8.2% | -11.9% | +25.5% | +8.4% |
| 2022 | -9.6% | -5.8% | +0.8% | -18.1% | +13.0% | -13.2% | +19.4% | -14.7% | -9.8% | +4.4% | +19.6% | -14.8% |
| 2021 | +13.7% | +15.6% | +5.2% | +4.3% | +4.7% | +1.8% | -4.1% | +5.8% | -2.5% | +9.6% | +18.9% | +7.5% |
| 2020 | +3.8% | -19.4% | -2.9% | +9.4% | -4.3% | +9.5% | +11.1% | -17.4% | -4.7% | +7.7% | +37.9% | +7.6% |
| 2019 | +4.2% | +8.9% | ||||||||||
| Average | +11.4% | -1.8% | -2.0% | +4.9% | +3.7% | +9.2% | -2.5% | +1.5% | -1.0% | +1.6% | +13.6% | +4.2% |
| % of years up | 86% | 57% | 43% | 71% | 57% | 86% | 43% | 67% | 17% | 67% | 86% | 86% |
| Years observed | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 7 |
Onto Innovation month by month: the summary
Over 2019-2026, here's what Onto Innovation (ONTO) stock did each month, on average: January +11.4% (up 86% of 7 years), February -1.8% (up 57% of 7 years), March -2.0% (up 43% of 7 years), April +4.9% (up 71% of 7 years), May +3.7% (up 57% of 7 years), June +9.2% (up 86% of 7 years), July -2.5% (up 43% of 7 years), August +1.5% (up 67% of 6 years), September -1.0% (up 17% of 6 years), October +1.6% (up 67% of 6 years), November +13.6% (up 86% of 7 years), December +4.2% (up 86% of 7 years). In other words, ONTO historically rose in January, April, May, June, August, October, November, December, and fell in February, March, July, September.
Does Onto Innovation really go up in November?
Over 2019-2026, November is Onto Innovation's strongest month: +13.6% on average, positive in 6 of 7 years. At the other end, July shows -2.5%. But a monthly gap is often built on one or two extreme years — the table above shows it: look at the spread, not just the average. Seasonality only means something when it has a cause (selling season, earnings calendar, year-end tax effects); with no identified cause, it's probably noise.
Frequently asked questions
Does Onto Innovation stock go up or down in January?
Over 7 years, ONTO rose +11.4% on average in January, finishing the month up 6 times out of 7 (86%). Median: +13.7%. It's one of its most consistent months. ⚠️ 7 years of data is not a prediction.
Does Onto Innovation stock go up or down in August?
Over 6 years, ONTO rose +1.5% on average in August, finishing the month up 4 times out of 6 (67%). Median: +8.6%. Results are split year to year — there's no clear pattern. ⚠️ 6 years of data is not a prediction.
Does Onto Innovation stock go up or down in June?
Over 7 years, ONTO rose +9.2% on average in June, finishing the month up 6 times out of 7 (86%). Median: +8.5%. It's one of its most consistent months. ⚠️ 7 years of data is not a prediction.
Does Onto Innovation stock go up or down in April?
Over 7 years, ONTO rose +4.9% on average in April, finishing the month up 5 times out of 7 (71%). Median: +2.4%. It's one of its most consistent months. ⚠️ 7 years of data is not a prediction.
Does Onto Innovation stock go up or down in December?
Over 7 years, ONTO rose +4.2% on average in December, finishing the month up 6 times out of 7 (86%). Median: +7.6%. It's one of its most consistent months. ⚠️ 7 years of data is not a prediction.
Does Onto Innovation stock go up or down in May?
Over 7 years, ONTO rose +3.7% on average in May, finishing the month up 4 times out of 7 (57%). Median: +4.7%. Results are split year to year — there's no clear pattern. ⚠️ 7 years of data is not a prediction.
What is the best month to buy Onto Innovation stock?
Historically, November: over the last 8 years, ONTO gained +13.6% on average that month and finished up 86% of the time (7 years observed). July is the weakest month (-2.5%). This is not a prediction: 8 years is a small sample, and the past is under no obligation to repeat.
Do Onto Innovation's quarterly earnings move the stock?
November — when Onto Innovation reports quarterly earnings — has been its best month over 8 years (+13.6% on average, up 86% of years). Earnings are a known driver of moves. ⚠️ This is a past tendency over a short history, not a rule. Use it as context, never as a buy plan.
Why does Onto Innovation stock often rise in November?
November has averaged as its best month over 8 years (+13.6%, up 86% of years). This month covers Onto Innovation's quarterly earnings release — a known driver of moves, and over this history it has tended to push the stock higher.
Why is Onto Innovation stock weaker in July?
July has averaged as its weakest month over 8 years (-2.5%, up only 43% of years). No clearly established recurring seasonal driver explains this month — it's a statistical tendency over 8 years of history, not a prediction.
Is there a best month to invest in the stock market in general?
There's no universal rule: every stock has its own seasonality. For ONTO it's November (+13.6% on average over 8 years) — another stock will look completely different. The calendar effects people cite ("sell in May", the year-end rally) are market-wide averages, not laws: on ONTO, January is the most consistent month (86% positive years). We also rank all 12 months for the whole market.
Does stock seasonality actually work?
Careful. A month that rose 8 times out of 8 can simply be chance: with 12 months and a dozen years, patterns appear naturally even in random data. Seasonality describes what happened; it doesn't explain why and predicts nothing. Treat it as context, never as a standalone buy signal.
What data is this table based on?
On ONTO's real monthly closing prices from 2019 to 2026 (8 years), source Yahoo Finance. Each cell = the price change over that month. Price performance, excluding dividends. Incomplete months and quote gaps are excluded.