Does MasTec (MTZ) stock go up or down depending on the month?
MasTec month by month, year by year
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +10.6% | +23.9% | +8.0% | +22.5% | -4.0% | +10.0% | -36.8% | |||||
| 2025 | +6.6% | -10.0% | -10.6% | +9.1% | +22.5% | +9.3% | +11.0% | -4.0% | +17.1% | -4.1% | +4.8% | +1.6% |
| 2024 | -13.3% | +14.9% | +23.6% | -4.9% | +26.6% | -4.7% | +2.8% | +2.8% | +8.8% | -0.2% | +17.2% | -5.5% |
| 2023 | +15.1% | -0.5% | -3.4% | -6.0% | +14.1% | +16.4% | -0.2% | -15.5% | -27.7% | -17.4% | +2.0% | +24.9% |
| 2022 | -6.7% | -8.6% | +10.6% | -17.3% | +16.1% | -14.3% | +10.1% | +2.0% | -21.1% | +21.4% | +17.8% | -6.1% |
| 2021 | +13.2% | +12.4% | +8.0% | +11.4% | +11.5% | -8.8% | -4.6% | -9.7% | -5.6% | +3.3% | +3.4% | +0.1% |
| 2020 | -10.0% | -15.0% | -33.3% | +9.7% | +9.1% | +14.6% | -11.3% | +16.2% | -8.7% | +17.6% | +14.2% | +20.2% |
| 2019 | +9.4% | -2.7% | +11.4% | +5.3% | -8.2% | +10.8% | -0.4% | +22.5% | +3.3% | -3.1% | +5.4% | -3.3% |
| 2018 | +9.1% | -4.6% | -7.7% | -6.5% | +6.0% | +8.8% | -8.3% | -5.9% | +1.9% | -2.6% | +3.6% | -10.0% |
| 2017 | -2.6% | +5.4% | +2.0% | +10.2% | -4.0% | +6.5% | +2.3% | -11.7% | +13.7% | -6.1% | +3.0% | +9.1% |
| 2016 | -11.2% | +10.0% | +19.2% | +12.0% | +1.5% | -3.0% | +9.5% | +20.4% | +1.0% | -4.0% | +32.9% | +0.8% |
| 2015 | -18.1% | +19.2% | -12.6% | -7.0% | -1.6% | +12.5% | -7.2% | -10.1% | -4.4% | +5.9% | +21.8% | -14.9% |
| 2014 | +9.8% | +13.9% | +6.1% | -8.9% | -9.0% | -14.4% | -11.8% | +12.2% | +0.4% | -6.5% | -15.9% | -6.2% |
| 2013 | +6.3% | -3.1% | -4.6% | +14.4% | +3.5% | +0.3% | -3.6% | -4.7% | +5.5% | -1.0% | +3.4% | |
| Average | +0.9% | +4.6% | +1.3% | +1.8% | +6.8% | +3.4% | -3.2% | +1.2% | -2.0% | +0.8% | +8.4% | +1.1% |
| % of years up | 54% | 57% | 57% | 50% | 64% | 64% | 43% | 46% | 54% | 38% | 85% | 54% |
| Years observed | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
MasTec month by month: the summary
Over 2013-2026, here's what MasTec (MTZ) stock did each month, on average: January +0.9% (up 54% of 13 years), February +4.6% (up 57% of 14 years), March +1.3% (up 57% of 14 years), April +1.8% (up 50% of 14 years), May +6.8% (up 64% of 14 years), June +3.4% (up 64% of 14 years), July -3.2% (up 43% of 14 years), August +1.2% (up 46% of 13 years), September -2.0% (up 54% of 13 years), October +0.8% (up 38% of 13 years), November +8.4% (up 85% of 13 years), December +1.1% (up 54% of 13 years). In other words, MTZ historically rose in January, February, March, April, May, June, August, October, November, December, and fell in July, September.
Does MasTec really go up in November?
Over 2013-2026, November is MasTec's strongest month: +8.4% on average, positive in 11 of 13 years. At the other end, July 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 MasTec stock go up or down in August?
Over 13 years, MTZ rose +1.2% on average in August, finishing the month up 6 times out of 13 (46%). Median: -3.6%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does MasTec stock go up or down in May?
Over 14 years, MTZ rose +6.8% on average in May, finishing the month up 9 times out of 14 (64%). Median: +7.5%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does MasTec stock go up or down in February?
Over 14 years, MTZ rose +4.6% on average in February, finishing the month up 8 times out of 14 (57%). Median: +5.8%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does MasTec stock go up or down in June?
Over 14 years, MTZ rose +3.4% on average in June, finishing the month up 9 times out of 14 (64%). Median: +7.6%. Results are split year to year — there's no clear pattern. ⚠️ 14 years of data is not a prediction.
Does MasTec stock go up or down in September?
Over 13 years, MTZ fell -2.0% on average in September, finishing the month up 7 times out of 13 (54%). Median: +0.4%. Results are split year to year — there's no clear pattern. ⚠️ 13 years of data is not a prediction.
Does MasTec stock go up or down in April?
Over 14 years, MTZ rose +1.8% on average in April, 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 MasTec stock?
Historically, November: over the last 14 years, MTZ gained +8.4% on average that month and finished up 85% of the time (13 years observed). July is the weakest month (-3.2%). This is not a prediction: 14 years is a small sample, and the past is under no obligation to repeat.
Why does MasTec stock often rise in November?
November has averaged as its best month over 14 years (+8.4%, 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 MTZ it's November (+8.4% 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 MTZ, 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 MTZ'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.