The takeaway
Tectonic Therapeutic, Inc. shows a pronounced seasonal pattern over 8 years of data — strongest in October (+13.4%) and softest in June (−6.3%).
Right now
In July, the stock has risen 63% of years, averaging +12.8%, about +10.6 pts better than the S&P 500.
The full picture
Tectonic Therapeutic, Inc.'s most dependable month has been October, higher in 7 of 8 years; June has been its least reliable, up just 13% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| 2018 | — | — | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in May (+12.4 pts); it has trailed the market most in March (−8.8 pts).
“vs S&P” is Tectonic Therapeutic, Inc.’s average for a month minus the S&P 500’s average for that same month — isolating Tectonic Therapeutic, Inc.’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, October has closed higher 80% of the time versus 88% across the last 8 years — the pattern is holding.
Figures are the typical (median) October return and how often it rose — the last 5 years versus the last 8(the heatmap’s default window). This verdict stays anchored to that 8-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
The seasonal story is really one month's story — October. It has closed higher in 7 of 8 Octobers, a concentration the rest of the calendar can't touch.
Read it with one caveat: the average (+13.4%) runs well ahead of the median (+7.5%), so a handful of outsized years — not steady strength — do much of the lifting. Few months are steadier: October's returns vary by just 13.9% year to year, and even its worst October in 8 years lost only 0.4% — the gentlest downside anywhere on its calendar. Better still, that strength is the stock's own and not just a buoyant market — October has outpaced the S&P 500 by +12.4 points on average. Few peers keep such company in October — the typical stock clears it just 53% of the time.
It doesn't stand entirely alone — May, July, and December have leaned firm as well, if less emphatically. The weaker half of the year is plainer: June has been the soft spot — the weakest of 6 months that average a loss (−6.3%), and the edge isn't year-round — the stock has trailed the S&P 500 in March, June, and January. Its roughest month on record was a −52.0% January in 2022 — a reminder of how hard even a seasonal name can fall.
Reassuringly, the tendency has held its shape: the recent five years still track the years behind them.
For a stock this dependable in October, the sharper question is the rest of the year — outside its strong stretch, the calendar gives far less to lean on. With a short 8-year record and returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (October), its worst (June), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2018 its best month (October, +13.4%) has run well ahead of its worst (June, −6.3%) — the heatmap above shows how steady that gap has been year to year.
October has been the strongest, averaging +13.4% and closing higher in 7 of 8 years since 2018.
It's the weakest, averaging −6.3% — historically a soft spot, though it still varies from year to year.
Explore
These names have the strongest July track records on record — a starting point for comparison.
Before you trade