The takeaway
Morgan Stanley ETF Trust - Calvert International Responsible Index ETF shows a moderate seasonal pattern over 3 years of data — strongest in January (+2.8%) and softest in October (−1.5%).
Right now
In July, the fund has risen 67% of years, averaging +1.1%, roughly 1.0 pts behind the S&P 500.
The full picture
Morgan Stanley ETF Trust - Calvert International Responsible Index ETF's most dependable month has been January, higher in 2 of 2 years; October has been its least reliable, up just 33% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | ||||||||||||
| Median return % | ||||||||||||
| 2025 | ||||||||||||
| 2024 | ||||||||||||
| 2023 | — |
Month by month
The fund's clearest edge over the S&P 500 lands in January (+3.0 pts); it has trailed the market most in October (−2.5 pts).
“vs S&P” is Morgan Stanley ETF Trust - Calvert International Responsible Index ETF’s average for a month minus the S&P 500’s average for that same month — isolating Morgan Stanley ETF Trust - Calvert International Responsible Index ETF’s own seasonal edge from broad market drift.
Reality check
Not enough recent January history to say whether the pattern still holds.
Figures are the typical (median) January return and how often it rose — the last 2 years versus the last 3(the heatmap’s default window). This verdict stays anchored to that 3-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. January stands out, higher in all 2 Januaries, but it heads a clutch of months that pull the year reliably upward.
Its average (+2.8%) and median (+2.8%) land within a hair of each other — the tell of steady, year-after-year gains rather than one outlier doing the work. Crucially, the gain is the fund's own rather than a rising tide's: January has cleared the S&P 500 by +3.0 points above the index. That consistency sets it apart from the field, where the average stock manages January only about 53% of the time.
The lift is near-universal — strength runs through almost every month of the year, not one window. On the other side of the ledger, October has been the soft spot — the only month to average an outright loss (−1.5%), and the edge isn't year-round — the fund has trailed the S&P 500 in October, July, and April.
The takeaway is less about when to buy than what to expect: January aside, the fund's months offer little reliable tilt. With a short 3-year record, the signal is best held loosely.
Short answers on the fund's best month (January), its worst (October), and whether it really trades seasonally.
Yes, to a moderate degree. Since 2023 its best month (January, +2.8%) has run well ahead of its worst (October, −1.5%) — the heatmap above shows how steady that gap has been year to year.
January has been the strongest, averaging +2.8% and closing higher in all 2 years on record since 2023.
It's the weakest, averaging −1.5% — 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