The takeaway
Lantheus Holdings Inc shows a pronounced seasonal pattern over 10 years of data — strongest in April (+8.6%) and softest in December (−3.9%).
Right now
In July, the stock has risen 50% of years, averaging +1.6%, roughly 0.6 pts behind the S&P 500.
The full picture
Lantheus Holdings Inc's most dependable month has been April, higher in 9 of 10 years; December has been its least reliable, up just 40% of the time.
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Month by month
The stock's clearest edge over the S&P 500 lands in February (+19.2 pts); it has trailed the market most in December (−4.9 pts).
“vs S&P” is Lantheus Holdings Inc’s average for a month minus the S&P 500’s average for that same month — isolating Lantheus Holdings Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, April has closed higher 100% of the time versus 90% across the last 10 years — the pattern is holding.
Figures are the typical (median) April return and how often it rose — the last 5 years versus the last 10(the heatmap’s default window). This verdict stays anchored to that 10-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 — April. It has closed higher in 9 of 10 Aprils, a concentration the rest of the calendar can't touch.
The strength looks broad-based rather than freakish: its average (+8.6%) and median (+9.8%) sit close together, so no single blow-out year is flattering the figure. No month is steadier: April's returns vary by just 4.5% year to year, and even its worst April in 10 years lost only 0.8% — the gentlest downside anywhere on its calendar. Better still, that strength is the stock's own and not just a buoyant market — April has outpaced the S&P 500 by +6.9 points on average. Few peers keep such company in April — the typical stock clears it just 55% of the time.
April anchors a run, too: the February-through-June window has been the stock's reliable season. On the other side of the ledger, December has been the soft spot — the weakest of 4 months that average a loss (−3.9%), and the edge isn't year-round — the stock has trailed the S&P 500 in December, October, and January. Its roughest month on record was a −33.9% February in 2018 — a reminder of how hard even a seasonal name can fall.
April has now closed higher 6 years running. Reassuringly, the tendency has held its shape: the recent five years still track the years behind them.
For a stock this dependable in April, the sharper question is the rest of the year — outside its strong stretch, the calendar gives far less to lean on. With returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (April), its worst (December), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2016 its best month (April, +8.6%) has run well ahead of its worst (December, −3.9%) — the heatmap above shows how steady that gap has been year to year.
April has been the strongest, averaging +8.6% and closing higher in 9 of 10 years since 2016.
It's the weakest, averaging −3.9% — 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.
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