The takeaway
Janus Henderson Mortgage-Backed Securities ETF shows a slight seasonal lean over 8 years of data — strongest in November (+1.6%) and softest in October (−0.9%).
Right now
In July, the fund has risen 86% of years, averaging +1.0%, roughly 1.2 pts behind the S&P 500.
The full picture
Janus Henderson Mortgage-Backed Securities ETF's most dependable month has been November, higher in 7 of 8 years; October has been its least reliable, up just 38% of the time.
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| 2018 | — | — | — | — | — | — | — | — |
Month by month
The fund's clearest edge over the S&P 500 lands in January (+0.8 pts); it has trailed the market most in April (−1.9 pts).
“vs S&P” is Janus Henderson Mortgage-Backed Securities ETF’s average for a month minus the S&P 500’s average for that same month — isolating Janus Henderson Mortgage-Backed Securities ETF’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, November has closed higher 80% of the time versus 88% across the last 8 years — the pattern is holding.
Figures are the typical (median) November 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
This is a fund you can almost set a calendar by, and November is the anchor — it has closed higher in 7 of 8 Novembers, the steadiest beat on its year.
The strength looks broad-based rather than freakish: its average (+1.6%) and median (+0.9%) sit close together, so no single blow-out year is flattering the figure. Few peers keep such company in November — the typical stock clears it just 62% of the time.
November anchors a run, too: the November-through-January window has been the fund's reliable season. On the other side of the ledger, October has been the soft spot — the weakest of 2 months that average a loss (−0.9%), and the edge isn't year-round — the fund has trailed the S&P 500 in April, October, and July.
Reassuringly, the tendency has held its shape: the recent five years still track the years behind them.
For a fund this dependable in November, 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, the signal is best held loosely.
Short answers on the fund's best month (November), its worst (October), and whether it really trades seasonally.
Only mildly. The fund's months are fairly even — November is the firmest (+1.6%) and October the softest (−0.9%), a narrow spread that points to weak seasonality rather than a strong calendar effect.
November has been the strongest, averaging +1.6% and closing higher in 7 of 8 years since 2018.
It's the weakest, averaging −0.9% — 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