RYTMRhythm Pharmaceuticals, Inc.

$89.19-20% 1Y

What is the market doing?

Mixed

No clear lean: nothing decisive, though a crowded short (+16% of shares).

1 to watch, 2 neutral
TrendRangeboundderived · Oct 23, 2026

Rangebound, no clear trend. Price is −8% vs its 200-day average.

Insider conviction−$28.8M (90 days to Oct 22, 2026)SEC EDGAR · Oct 22, 2026

Insiders were net sellers over the 90 days ending Oct 22, 2026; selling is often routine (taxes, diversification).

Short interest16% of sharesFINRA · Sep 30, 2026

A crowded short, settled Sep 30, 2026, more than a week of normal trading to cover, a crowded exit.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

1-year returnbehind 81% of the market
vs 200-day avgbehind 68% of the market

Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.

How RYTM is trading

Rhythm Pharmaceuticals, Inc. is −20% over the past year while the S&P 500 is +16%: 36 points behind the market.

−20%

1-year return · S&P 500 +16%

vs 200-day average
−8.4%

vs 200-day average · below trend, but not far

RSI (14)
43

RSI (14) · neutral

Below its 52-week high
24%

Below its 52-week high

Oct 15, 2024$44.20 – $117.62 · dashed line: 200-day averageOct 23, 2026
Details›
Last close2026-10-23
$89.19
1 monthS&P 500 −0.94%
−9.3%
1 yearS&P 500 +16%
−20%
5 yearsS&P 500 +86%
+676%
vs 50-day average$99.47
−10%
52-week high
$117.62
52-week low
$75.82
Annualised volatility
53%
Insider selling, net, 6 monthsForms 3/4/5 to 2026-10-22
$428K
Calendar-year price return
YearReturn
2026 (year to date)−17%
2025+91%
2024+22%
2023+58%
2022+192%
2021−66%
2020+29%
2019−15%
2018−7.5%
Average return by calendar month, 2017–2026
MonthYearsPositiveAverage
Jan93 of 9−5.2%
Feb93 of 9−4.9%
Mar91 of 9−5.7%
Apr95 of 9+1.4%
May93 of 9−4.6%
Jun95 of 9+7.0%
Jul94 of 9+25%
Aug96 of 9+21%
Sep93 of 9−4.7%
Oct93 of 9−2.1%
Nov97 of 9+14%
Dec95 of 9+4.1%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.

Where the price stands

Its trend against the 50-day and 200-day averages, and the levels it keeps coming back to.

What it has returned

With dividends, year by year, month by month, and by calendar month on average.