Does Cigna (CI) stock go up or down depending on the month?
Cigna month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -0.4% | +5.7% | -8.0% | +8.9% | -4.5% | -0.6% | +1.2% | |||||
| 2025 | +6.5% | +5.0% | +6.5% | +3.4% | -6.9% | +4.4% | -19.1% | +12.5% | -4.2% | -15.2% | +13.4% | -0.7% |
| 2024 | +0.5% | +11.7% | +8.0% | -1.7% | -3.5% | -4.1% | +5.5% | +3.8% | -4.2% | -9.1% | +7.3% | -18.3% |
| 2023 | -4.4% | -7.8% | -12.5% | -0.9% | -2.3% | +13.4% | +5.2% | -6.4% | +3.6% | +8.1% | -15.0% | +13.9% |
| 2022 | +0.4% | +3.2% | +0.8% | +3.0% | +8.7% | -1.8% | +4.5% | +2.9% | -2.1% | +16.4% | +1.8% | +0.7% |
| 2021 | +4.3% | -3.3% | +15.2% | +3.0% | +4.0% | -8.4% | -3.2% | -7.8% | -5.4% | +6.7% | -10.2% | +19.7% |
| 2020 | -5.9% | -4.9% | -3.1% | +10.5% | +0.8% | -4.9% | -8.0% | +2.7% | -4.5% | -1.4% | +25.3% | -0.5% |
| 2019 | +5.2% | -12.7% | -7.8% | -1.2% | -6.8% | +6.4% | +7.9% | -9.4% | -1.4% | +17.6% | +12.0% | +2.3% |
| 2018 | +2.6% | -6.0% | -14.4% | +2.4% | -1.4% | +0.3% | +5.6% | +5.0% | +10.6% | +2.7% | +4.5% | -15.0% |
| 2017 | +9.6% | +1.8% | -1.6% | +6.7% | +3.1% | +3.8% | +3.7% | +4.9% | +2.7% | +5.5% | +7.4% | -4.1% |
| 2016 | -8.7% | +4.5% | -1.7% | +0.9% | -7.5% | -0.1% | +0.8% | -0.5% | +1.6% | -8.8% | +13.4% | -1.0% |
| 2015 | +3.8% | +13.9% | +6.4% | -3.7% | +13.0% | +15.0% | -11.1% | -2.3% | -4.1% | -0.7% | +0.7% | +8.4% |
| 2014 | -1.3% | -7.8% | +5.2% | -4.4% | +12.2% | +2.4% | -2.1% | +5.1% | -4.1% | +9.8% | +3.3% | +0.0% |
| 2013 | +0.2% | +6.7% | +6.1% | +2.6% | +6.8% | +7.4% | +1.1% | -2.3% | +0.2% | +13.6% | +0.0% | |
| Average | +0.9% | +0.3% | -0.0% | +2.4% | +0.8% | +2.3% | -0.1% | +0.9% | -1.1% | +2.4% | +6.0% | +0.4% |
| % of years up | 62% | 57% | 50% | 64% | 50% | 57% | 64% | 62% | 31% | 62% | 85% | 54% |
| Years observed | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Cigna month by month: the summary
Over 2013-2026, here's what Cigna (CI) stock did each month, on average: January +0.9% (up 62% of 13 years), February +0.3% (up 57% of 14 years), March -0.0% (up 50% of 14 years), April +2.4% (up 64% of 14 years), May +0.8% (up 50% of 14 years), June +2.3% (up 57% of 14 years), July -0.1% (up 64% of 14 years), August +0.9% (up 62% of 13 years), September -1.1% (up 31% of 13 years), October +2.4% (up 62% of 13 years), November +6.0% (up 85% of 13 years), December +0.4% (up 54% of 13 years). In other words, CI historically rose in January, February, April, May, June, August, October, November, December, and fell in March, July, September.
Does Cigna really go up in November?
Over 2013-2026, November is Cigna's strongest month: +6.0% on average, positive in 11 of 13 years. At the other end, September shows -1.1%. 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 Cigna stock go up or down in August?
Over 13 years, CI rose +0.9% on average in August, finishing the month up 8 times out of 13 (62%). Median: +2.7%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Cigna stock go up or down in October?
Over 13 years, CI rose +2.4% on average in October, finishing the month up 8 times out of 13 (62%). Median: +2.7%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Cigna stock go up or down in April?
Over 14 years, CI rose +2.4% on average in April, finishing the month up 9 times out of 14 (64%). Median: +2.7%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Cigna stock go up or down in June?
Over 14 years, CI rose +2.3% on average in June, finishing the month up 8 times out of 14 (57%). Median: +1.4%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Cigna stock go up or down in January?
Over 13 years, CI rose +0.9% on average in January, finishing the month up 8 times out of 13 (62%). Median: +0.5%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Cigna stock go up or down in May?
Over 14 years, CI rose +0.8% on average in May, finishing the month up 7 times out of 14 (50%). Median: -0.3%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
What is the best month to buy Cigna stock?
Historically, November: over the last 14 years, CI gained +6.0% on average that month and finished up 85% of the time (13 years observed). September is the weakest month (-1.1%). This is not a prediction: 14 years is a small sample, and the past is under no obligation to repeat.
Why does Cigna stock often rise in November?
November has averaged as its best month over 14 years (+6.0%, up 85% of years). No clearly established recurring seasonal driver explains this month — it's a statistical tendency over 14 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 CI it's November (+6.0% on average over 14 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 CI, November is the most consistent month (85% positive years). We also rank all 12 months for the whole market.
Does stock seasonality actually work?
Careful. A month that rose 14 times out of 14 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 CI's real monthly closing prices from 2013 to 2026 (14 years), source Yahoo Finance. Each cell = the price change over that month. Price performance, excluding dividends. Incomplete months and quote gaps are excluded.