Does Glaukos Corp. (GKOS) stock go up or down depending on the month?
Glaukos Corp. month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +5.7% | +0.9% | -10.6% | +33.4% | -28.1% | +35.2% | +19.3% | |||||
| 2025 | +4.3% | -23.3% | -18.0% | -4.2% | +0.0% | +9.5% | -16.7% | +11.3% | -14.9% | +8.0% | +20.7% | +6.2% |
| 2024 | +12.0% | -0.5% | +6.4% | +1.8% | +17.4% | +5.0% | -1.0% | +14.3% | -2.7% | +1.5% | +8.6% | +4.4% |
| 2023 | +12.3% | -3.7% | +6.1% | -5.2% | +20.0% | +24.9% | +8.3% | -2.6% | +0.1% | -9.4% | -6.3% | +24.4% |
| 2022 | +19.8% | +3.9% | +4.5% | -18.2% | -13.7% | +11.2% | +18.6% | -9.8% | +9.7% | +5.3% | -16.9% | -6.2% |
| 2021 | +17.8% | +6.6% | -11.2% | +12.2% | -21.9% | +15.3% | -39.9% | +16.9% | -19.2% | -5.1% | -5.9% | +3.3% |
| 2020 | +3.3% | -21.8% | -29.8% | +18.9% | +6.2% | -1.4% | +13.7% | +9.5% | +3.5% | +12.9% | +20.7% | +11.5% |
| 2019 | +13.6% | +16.3% | +5.7% | -8.0% | -10.6% | +16.9% | +8.3% | -21.3% | -2.8% | +2.1% | +0.5% | -15.1% |
| 2018 | +17.0% | +4.3% | -1.5% | +9.2% | +12.1% | +7.6% | +2.4% | +64.3% | -5.1% | -10.7% | +13.7% | -14.7% |
| 2017 | +20.2% | +10.4% | +12.7% | -7.3% | -14.3% | +1.9% | -3.1% | -6.0% | -12.6% | +7.0% | -24.2% | -4.2% |
| 2016 | -33.9% | +0.9% | +2.4% | +11.7% | +29.2% | +19.8% | +19.9% | -14.6% | +26.5% | -11.5% | -6.6% | +9.9% |
| 2015 | +9.7% | -7.6% | -17.6% | -17.2% | +29.2% | -4.7% | ||||||
| Average | +8.4% | -0.6% | -3.0% | +4.0% | -0.3% | +13.3% | +3.3% | +4.9% | -3.2% | -1.5% | +3.0% | +1.4% |
| % of years up | 91% | 64% | 55% | 55% | 55% | 91% | 67% | 45% | 36% | 55% | 55% | 55% |
| Years observed | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 11 |
Glaukos Corp. month by month: the summary
Over 2015-2026, here's what Glaukos Corp. (GKOS) stock did each month, on average: January +8.4% (up 91% of 11 years), February -0.6% (up 64% of 11 years), March -3.0% (up 55% of 11 years), April +4.0% (up 55% of 11 years), May -0.3% (up 55% of 11 years), June +13.3% (up 91% of 11 years), July +3.3% (up 67% of 12 years), August +4.9% (up 45% of 11 years), September -3.2% (up 36% of 11 years), October -1.5% (up 55% of 11 years), November +3.0% (up 55% of 11 years), December +1.4% (up 55% of 11 years). In other words, GKOS historically rose in January, April, June, July, August, November, December, and fell in February, March, May, September, October.
Does Glaukos Corp. really go up in June?
Over 2015-2026, June is Glaukos Corp.'s strongest month: +13.3% on average, positive in 10 of 11 years. At the other end, September shows -3.2%. 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 Glaukos Corp. stock go up or down in January?
Over 11 years, GKOS rose +8.4% on average in January, finishing the month up 10 times out of 11 (91%). Median: +12.3%. It's one of its most consistent months. ⚠️ 11 years of data is not a prediction.
Does Glaukos Corp. stock go up or down in August?
Over 11 years, GKOS rose +4.9% on average in August, finishing the month up 5 times out of 11 (45%). Median: -2.6%. Results are split year to year — there's no clear pattern. ⚠️ 11 years of data is not a prediction.
Does Glaukos Corp. stock go up or down in April?
Over 11 years, GKOS rose +4.0% on average in April, finishing the month up 6 times out of 11 (55%). Median: +1.8%. Results are split year to year — there's no clear pattern. ⚠️ 11 years of data is not a prediction.
Does Glaukos Corp. stock go up or down in July?
Over 12 years, GKOS rose +3.3% on average in July, finishing the month up 8 times out of 12 (67%). Median: +8.3%. Results are split year to year — there's no clear pattern. ⚠️ 12 years of data is not a prediction.
Does Glaukos Corp. stock go up or down in November?
Over 11 years, GKOS rose +3.0% on average in November, finishing the month up 6 times out of 11 (55%). Median: +0.5%. Results are split year to year — there's no clear pattern. ⚠️ 11 years of data is not a prediction.
Does Glaukos Corp. stock go up or down in March?
Over 11 years, GKOS fell -3.0% on average in March, finishing the month up 6 times out of 11 (55%). Median: +2.4%. Results are split year to year — there's no clear pattern. ⚠️ 11 years of data is not a prediction.
What is the best month to buy Glaukos Corp. stock?
Historically, June: over the last 12 years, GKOS gained +13.3% on average that month and finished up 91% of the time (11 years observed). September is the weakest month (-3.2%). This is not a prediction: 12 years is a small sample, and the past is under no obligation to repeat.
Why does Glaukos Corp. stock often rise in June?
June has averaged as its best month over 12 years (+13.3%, up 91% of years). No clearly established recurring seasonal driver explains this month — it's a statistical tendency over 12 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 GKOS it's June (+13.3% on average over 12 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 GKOS, January is the most consistent month (91% positive years). We also rank all 12 months for the whole market.
Does stock seasonality actually work?
Careful. A month that rose 12 times out of 12 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 GKOS's real monthly closing prices from 2015 to 2026 (12 years), source Yahoo Finance. Each cell = the price change over that month. Price performance, excluding dividends. Incomplete months and quote gaps are excluded.