Does Thermo Fisher Scientific (TMO) stock go up or down depending on the month?
Thermo Fisher Scientific month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -0.1% | -9.9% | -5.7% | -2.6% | +2.8% | +1.8% | +14.5% | |||||
| 2025 | +14.9% | -11.5% | -5.9% | -13.8% | -6.1% | +0.7% | +15.3% | +5.4% | -1.6% | +17.0% | +4.1% | -1.9% |
| 2024 | +1.5% | +5.8% | +1.9% | -2.1% | -0.1% | -2.6% | +10.9% | +0.3% | +0.6% | -11.7% | -3.1% | -1.8% |
| 2023 | +3.6% | -5.0% | +6.4% | -3.7% | -8.4% | +2.6% | +5.2% | +1.5% | -9.1% | -12.1% | +11.5% | +7.1% |
| 2022 | -12.9% | -6.4% | +8.6% | -6.4% | +2.6% | -4.3% | +10.1% | -8.9% | -7.0% | +1.3% | +9.0% | -1.7% |
| 2021 | +9.4% | -11.7% | +1.4% | +3.0% | -0.2% | +7.4% | +7.0% | +2.8% | +3.0% | +10.8% | -0.0% | +5.4% |
| 2020 | -3.6% | -7.1% | -2.5% | +18.0% | +4.3% | +3.8% | +14.2% | +3.6% | +2.9% | +7.2% | -1.7% | +0.2% |
| 2019 | +9.8% | +5.7% | +5.5% | +1.4% | -3.8% | +10.0% | -5.4% | +3.4% | +1.5% | +3.7% | +4.0% | +3.5% |
| 2018 | +18.0% | -6.9% | -1.0% | +1.9% | -1.0% | -0.5% | +13.2% | +1.9% | +2.1% | -4.3% | +6.8% | -10.3% |
| 2017 | +8.0% | +3.5% | -2.6% | +7.6% | +4.5% | +1.0% | +0.6% | +6.6% | +1.1% | +2.4% | -0.6% | -1.5% |
| 2016 | -6.9% | -2.2% | +9.6% | +1.9% | +5.2% | -2.6% | +7.5% | -4.2% | +4.5% | -7.6% | -4.7% | +0.7% |
| 2015 | -0.1% | +3.8% | +3.3% | -6.4% | +3.1% | +0.1% | +7.5% | -10.1% | -2.5% | +7.0% | +5.8% | +2.5% |
| 2014 | +3.4% | +8.2% | -3.5% | -5.2% | +2.6% | +0.9% | +3.0% | -1.1% | +1.2% | -3.4% | +10.0% | -3.1% |
| 2013 | +2.3% | +3.6% | +5.5% | +9.4% | -4.2% | +7.7% | -2.5% | +3.7% | +6.1% | +3.1% | +10.4% | |
| Average | +3.5% | -2.3% | +1.4% | -0.1% | +1.1% | +1.0% | +8.0% | -0.1% | +0.0% | +1.3% | +3.4% | +0.7% |
| % of years up | 62% | 43% | 57% | 50% | 57% | 64% | 93% | 62% | 69% | 62% | 62% | 54% |
| Years observed | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Thermo Fisher Scientific month by month: the summary
Over 2013-2026, here's what Thermo Fisher Scientific (TMO) stock did each month, on average: January +3.5% (up 62% of 13 years), February -2.3% (up 43% of 14 years), March +1.4% (up 57% of 14 years), April -0.1% (up 50% of 14 years), May +1.1% (up 57% of 14 years), June +1.0% (up 64% of 14 years), July +8.0% (up 93% of 14 years), August -0.1% (up 62% of 13 years), September +0.0% (up 69% of 13 years), October +1.3% (up 62% of 13 years), November +3.4% (up 62% of 13 years), December +0.7% (up 54% of 13 years). In other words, TMO historically rose in January, March, May, June, July, September, October, November, December, and fell in February, April, August.
Does Thermo Fisher Scientific really go up in July?
Over 2013-2026, July is Thermo Fisher Scientific's strongest month: +8.0% on average, positive in 13 of 14 years. At the other end, February shows -2.3%. 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 Thermo Fisher Scientific stock go up or down in August?
Over 13 years, TMO fell -0.1% on average in August, finishing the month up 8 times out of 13 (62%). Median: +1.5%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Thermo Fisher Scientific stock go up or down in January?
Over 13 years, TMO rose +3.5% on average in January, finishing the month up 8 times out of 13 (62%). Median: +3.4%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Thermo Fisher Scientific stock go up or down in November?
Over 13 years, TMO rose +3.4% on average in November, finishing the month up 8 times out of 13 (62%). Median: +4.0%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Thermo Fisher Scientific stock go up or down in March?
Over 14 years, TMO rose +1.4% on average in March, finishing the month up 8 times out of 14 (57%). Median: +1.7%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does Thermo Fisher Scientific stock go up or down in October?
Over 13 years, TMO rose +1.3% on average in October, finishing the month up 8 times out of 13 (62%). Median: +2.4%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does Thermo Fisher Scientific stock go up or down in May?
Over 14 years, TMO rose +1.1% on average in May, finishing the month up 8 times out of 14 (57%). Median: +2.6%. 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 Thermo Fisher Scientific stock?
Historically, July: over the last 14 years, TMO gained +8.0% on average that month and finished up 93% of the time (14 years observed). February is the weakest month (-2.3%). This is not a prediction: 14 years is a small sample, and the past is under no obligation to repeat.
Do Thermo Fisher Scientific's quarterly earnings move the stock?
July — when Thermo Fisher Scientific reports quarterly earnings — has been its best month over 14 years (+8.0% on average, up 93% 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 Thermo Fisher Scientific stock often rise in July?
July has averaged as its best month over 14 years (+8.0%, up 93% of years). This month covers Thermo Fisher Scientific's quarterly earnings release — a known driver of moves, and over this history it has tended to push the stock higher.
Why is Thermo Fisher Scientific stock weaker in February?
February has averaged as its weakest month over 14 years (-2.3%, up only 43% 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 TMO it's July (+8.0% 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 TMO, July is the most consistent month (93% 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 TMO'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.