Does TransMedics Group, Inc. (TMDX) stock go up or down depending on the month?
TransMedics Group, Inc. month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +10.1% | +8.4% | -31.6% | +1.4% | -33.3% | -1.2% | +15.2% | |||||
| 2025 | +8.3% | +13.0% | -11.8% | +36.8% | +38.2% | +5.4% | -11.2% | -3.4% | -2.4% | +17.2% | +11.2% | -16.9% |
| 2024 | +8.7% | -4.9% | -9.4% | +27.3% | +44.9% | +10.4% | -5.6% | +18.1% | -6.6% | -47.8% | +5.8% | -28.1% |
| 2023 | +2.1% | +27.1% | -5.4% | +4.5% | -8.1% | +15.6% | +11.0% | -29.6% | -16.6% | -31.5% | +101.9% | +4.3% |
| 2022 | -17.2% | +16.7% | +45.5% | -22.2% | +39.2% | +7.8% | +28.4% | +28.9% | -19.8% | +15.5% | +28.3% | -0.2% |
| 2021 | +14.5% | +57.6% | +15.6% | -30.8% | -10.7% | +29.4% | -14.0% | +14.6% | +1.3% | -17.1% | -19.7% | -13.1% |
| 2020 | -7.9% | -10.3% | -23.1% | +49.8% | -27.0% | +35.7% | +0.8% | -1.3% | -22.7% | -13.1% | +24.1% | +33.8% |
| 2019 | +6.6% | -18.1% | +0.9% | -0.8% | -24.5% | +4.5% | +1.4% | |||||
| Average | +2.7% | +15.4% | -2.9% | +9.5% | +6.2% | +13.7% | +0.8% | +4.0% | -9.7% | -14.5% | +22.3% | -2.7% |
| % of years up | 71% | 71% | 29% | 71% | 43% | 88% | 50% | 57% | 14% | 29% | 86% | 43% |
| Years observed | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 7 |
TransMedics Group, Inc. month by month: the summary
Over 2019-2026, here's what TransMedics Group, Inc. (TMDX) stock did each month, on average: January +2.7% (up 71% of 7 years), February +15.4% (up 71% of 7 years), March -2.9% (up 29% of 7 years), April +9.5% (up 71% of 7 years), May +6.2% (up 43% of 7 years), June +13.7% (up 88% of 8 years), July +0.8% (up 50% of 8 years), August +4.0% (up 57% of 7 years), September -9.7% (up 14% of 7 years), October -14.5% (up 29% of 7 years), November +22.3% (up 86% of 7 years), December -2.7% (up 43% of 7 years). In other words, TMDX historically rose in January, February, April, May, June, July, August, November, and fell in March, September, October, December.
Does TransMedics Group, Inc. really go up in November?
Over 2019-2026, November is TransMedics Group, Inc.'s strongest month: +22.3% on average, positive in 6 of 7 years. At the other end, October shows -14.5%. 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 TransMedics Group, Inc. stock go up or down in June?
Over 8 years, TMDX rose +13.7% on average in June, finishing the month up 7 times out of 8 (88%). Median: +9.1%. It's one of its most consistent months. ⚠️ 8 years of data is not a prediction.
Does TransMedics Group, Inc. stock go up or down in August?
Over 7 years, TMDX rose +4.0% on average in August, finishing the month up 4 times out of 7 (57%). Median: +0.9%. Results are split year to year — there's no clear pattern. ⚠️ 7 years of data is not a prediction.
Does TransMedics Group, Inc. stock go up or down in February?
Over 7 years, TMDX rose +15.4% on average in February, finishing the month up 5 times out of 7 (71%). Median: +13.0%. It's one of its most consistent months. ⚠️ 7 years of data is not a prediction.
Does TransMedics Group, Inc. stock go up or down in September?
Over 7 years, TMDX fell -9.7% on average in September, finishing the month up 1 times out of 7 (14%). Median: -6.6%. It's one of its weakest months. ⚠️ 7 years of data is not a prediction.
Does TransMedics Group, Inc. stock go up or down in April?
Over 7 years, TMDX rose +9.5% on average in April, finishing the month up 5 times out of 7 (71%). Median: +4.5%. It's one of its most consistent months. ⚠️ 7 years of data is not a prediction.
Does TransMedics Group, Inc. stock go up or down in May?
Over 7 years, TMDX rose +6.2% on average in May, finishing the month up 3 times out of 7 (43%). Median: -8.1%. 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 TransMedics Group, Inc. stock?
Historically, November: over the last 8 years, TMDX gained +22.3% on average that month and finished up 86% of the time (7 years observed). October is the weakest month (-14.5%). This is not a prediction: 8 years is a small sample, and the past is under no obligation to repeat.
Why does TransMedics Group, Inc. stock often rise in November?
November has averaged as its best month over 8 years (+22.3%, up 86% 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 TMDX it's November (+22.3% 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 TMDX, June is the most consistent month (88% 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 TMDX'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.