The takeaway
AB California Intermediate Municipal ETF shows a slight seasonal lean over 1 years of data — strongest in October (+0.7%) and softest in November (+0.2%).
Right now
Not enough July history yet to summarize.
The full picture
AB California Intermediate Municipal ETF's most dependable month has been October, higher in 1 of 1 years; November has been its least reliable, up just 100% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | — | — | — | — | — | — | — | — | — | |||
| Median return % | — | — | — | — | — | — | — | — | — | |||
| 2025 | — | — | — | — | — | — | — | — | — |
Month by month
Across the year the fund has stayed close to the S&P 500 — no single month stands out as a real edge.
“vs S&P” is AB California Intermediate Municipal ETF’s average for a month minus the S&P 500’s average for that same month — isolating AB California Intermediate Municipal ETF’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 (+0.7%) and median (+0.7%) 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 0.7% — 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 — October–December forms a firm stretch that carries much of the year. At the other end of the calendar, November is the year's quietest corner, essentially flat on average, and the edge isn't year-round — the fund has trailed the S&P 500 in November and December.
The takeaway is less about when to buy than what to expect: October aside, the fund's months offer little reliable tilt. With a short 1-year record, the signal is best held loosely.
Short answers on the fund's best month (October), its worst (November), and whether it really trades seasonally.
Only mildly. The fund's months are fairly even — October is the firmest (+0.7%) and November the softest (+0.2%), a narrow spread that points to weak seasonality rather than a strong calendar effect.
October has been the strongest, averaging +0.7% and closing higher in its one year on record since 2025.
It's the weakest month, but it has still averaged a small gain (+0.2%) — quiet rather than genuinely bad.
Explore
These names have the strongest July track records on record — a starting point for comparison.
Before you trade