The takeaway
Archimedes Tech SPAC Partners II Co. Ordinary Shares shows a slight seasonal lean over 1 years of data — strongest in October (+1.5%) and softest in December (−0.4%).
Right now
In July, the stock has fallen 0% of years, averaging 0.0%, roughly 2.2 pts behind the S&P 500.
The full picture
Archimedes Tech SPAC Partners II Co. Ordinary Shares's most dependable month has been October, higher in 1 of 1 years; December has been its least reliable, up just 0% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | — | — | — | |||||||||
| Median return % | — | — | — | |||||||||
| 2025 | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in June (+0.9 pts); it has trailed the market most in July (−2.2 pts).
“vs S&P” is Archimedes Tech SPAC Partners II Co. Ordinary Shares’s average for a month minus the S&P 500’s average for that same month — isolating Archimedes Tech SPAC Partners II Co. Ordinary Shares’s own seasonal edge from broad market drift.
Reality check
Not enough recent October history to say whether the pattern still holds.
Figures are the typical (median) October return and how often it rose — the last 1 years versus the last 1(the heatmap’s default window). This verdict stays anchored to that 1-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
Dependability is the through-line here. October stands out, higher in all 1 Octobers, but it heads a clutch of months that pull the year reliably upward.
Its average (+1.5%) and median (+1.5%) land within a hair of each other — the tell of steady, year-after-year gains rather than one outlier doing the work. It is also the calendar's calmest month, its returns swinging least from year to year (a 0.0% spread), and even its worst October in 1 years lost only 1.5% — the gentlest downside anywhere on its calendar. Set against the S&P 500, mind, October is close to a wash — the gain mirrors the market more than it beats it. That consistency sets it apart from the field, where the average stock manages October only about 53% of the time.
The strength clusters rather than stands alone — August–November forms a firm stretch that carries much of the year. On the other side of the ledger, December is the year's quietest corner, essentially flat on average, and the edge isn't year-round — the stock has trailed the S&P 500 in July, November, and December.
The takeaway is less about when to buy than what to expect: October aside, the stock's months offer little reliable tilt. With a short 1-year record, the signal is best held loosely.
Short answers on the stock's best month (October), its worst (December), and whether it really trades seasonally.
Only mildly. The stock's months are fairly even — October is the firmest (+1.5%) and December the softest (−0.4%), a narrow spread that points to weak seasonality rather than a strong calendar effect.
October has been the strongest, averaging +1.5% and closing higher in its one year on record since 2025.
It's the weakest, averaging −0.4% — 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.
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