Does Pfizer (PFE) stock go up or down depending on the month?
Pfizer month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +6.2% | +4.6% | +1.6% | -4.9% | -1.9% | -8.0% | +3.9% | |||||
| 2025 | -0.0% | -0.3% | -4.1% | -3.7% | -3.8% | +3.2% | -3.9% | +6.3% | +2.9% | -3.3% | +4.4% | -3.3% |
| 2024 | -5.9% | -1.9% | +4.5% | -7.7% | +11.9% | -2.4% | +9.1% | -5.0% | -0.2% | -2.2% | -7.4% | +1.2% |
| 2023 | -13.8% | -8.1% | +0.6% | -4.7% | -2.2% | -3.5% | -1.7% | -1.9% | -6.2% | -7.9% | -0.3% | -5.5% |
| 2022 | -10.8% | -10.9% | +10.3% | -5.2% | +8.1% | -1.2% | -3.7% | -10.5% | -3.3% | +6.4% | +7.7% | +2.2% |
| 2021 | -2.5% | -6.7% | +8.2% | +6.7% | +0.2% | +1.1% | +9.3% | +7.6% | -6.6% | +1.7% | +22.8% | +9.9% |
| 2020 | -5.0% | -10.2% | -2.3% | +17.5% | -0.4% | -14.4% | +17.7% | -1.8% | -2.9% | -3.3% | +13.8% | -3.9% |
| 2019 | -2.7% | +2.1% | -2.0% | -4.4% | +2.2% | +4.3% | -10.3% | -8.5% | +1.1% | +6.8% | +0.4% | +1.7% |
| 2018 | +2.3% | -2.0% | -2.3% | +3.1% | -1.8% | +1.0% | +10.1% | +4.0% | +6.1% | -2.3% | +7.4% | -5.6% |
| 2017 | -2.3% | +7.5% | +0.3% | -0.9% | -3.7% | +2.9% | -1.3% | +2.3% | +5.3% | -1.8% | +3.4% | -0.1% |
| 2016 | -5.6% | -2.7% | -0.1% | +10.3% | +6.1% | +1.5% | +4.8% | -5.7% | -2.7% | -6.3% | +1.3% | +1.1% |
| 2015 | +0.3% | +9.8% | +1.4% | -2.5% | +2.4% | -3.5% | +7.5% | -10.6% | -2.5% | +7.7% | -3.1% | -1.5% |
| 2014 | -0.8% | +5.6% | +0.0% | -2.6% | -5.3% | +0.2% | -3.3% | +2.4% | +0.6% | +1.3% | +4.0% | +0.0% |
| 2013 | +0.3% | +5.4% | +0.7% | -6.3% | +2.9% | +4.4% | -3.5% | +1.9% | +6.8% | +3.4% | -3.5% | |
| Average | -3.1% | -0.9% | +1.5% | +0.1% | +0.4% | -1.1% | +3.0% | -1.9% | -0.5% | +0.3% | +4.4% | -0.6% |
| % of years up | 23% | 43% | 64% | 36% | 43% | 57% | 57% | 38% | 46% | 46% | 77% | 38% |
| Years observed | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Pfizer month by month: the summary
Over 2013-2026, here's what Pfizer (PFE) stock did each month, on average: January -3.1% (up 23% of 13 years), February -0.9% (up 43% of 14 years), March +1.5% (up 64% of 14 years), April +0.1% (up 36% of 14 years), May +0.4% (up 43% of 14 years), June -1.1% (up 57% of 14 years), July +3.0% (up 57% of 14 years), August -1.9% (up 38% of 13 years), September -0.5% (up 46% of 13 years), October +0.3% (up 46% of 13 years), November +4.4% (up 77% of 13 years), December -0.6% (up 38% of 13 years). In other words, PFE historically rose in March, April, May, July, October, November, and fell in January, February, June, August, September, December.
Does Pfizer really go up in November?
Over 2013-2026, November is Pfizer's strongest month: +4.4% on average, positive in 10 of 13 years. At the other end, January shows -3.1%. 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 Pfizer stock go up or down in August?
Over 13 years, PFE fell -1.9% on average in August, finishing the month up 5 times out of 13 (38%). Median: -1.9%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Pfizer stock go up or down in July?
Over 14 years, PFE rose +3.0% on average in July, finishing the month up 8 times out of 14 (57%). Median: +4.1%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Pfizer stock go up or down in March?
Over 14 years, PFE rose +1.5% on average in March, finishing the month up 9 times out of 14 (64%). Median: +0.4%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Pfizer stock go up or down in June?
Over 14 years, PFE fell -1.1% on average in June, finishing the month up 8 times out of 14 (57%). Median: +0.6%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Pfizer stock go up or down in February?
Over 14 years, PFE fell -0.9% on average in February, finishing the month up 6 times out of 14 (43%). Median: -1.1%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Pfizer stock go up or down in December?
Over 13 years, PFE fell -0.6% on average in December, finishing the month up 5 times out of 13 (38%). Median: -0.1%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
What is the best month to buy Pfizer stock?
Historically, November: over the last 14 years, PFE gained +4.4% on average that month and finished up 77% of the time (13 years observed). January is the weakest month (-3.1%). This is not a prediction: 14 years is a small sample, and the past is under no obligation to repeat.
Do Pfizer's quarterly earnings move the stock?
November — when Pfizer reports quarterly earnings — has been its best month over 14 years (+4.4% on average, up 77% 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 Pfizer stock often rise in November?
November has averaged as its best month over 14 years (+4.4%, up 77% of years). This month covers Pfizer's quarterly earnings release — a known driver of moves, and over this history it has tended to push the stock higher.
Why is Pfizer stock weaker in January?
January has averaged as its weakest month over 14 years (-3.1%, up only 23% 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 PFE it's November (+4.4% 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 PFE, November is the most consistent month (77% 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 PFE'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.