Broken Stocks does not issue buy or sell recommendations. The site is a technical warning system that tracks structural decline depth and recency. Consult a licensed advisor before making investment decisions.

What sector is RARE in and how do its peers look?

RARE is classified under an unknown sector.

Where is RARE trading within its 52-week range?

RARE is currently at 14.30, which is 2.2% of the way from its 52-week low of 13.81 to its 52-week high of 36.57.

Red List

RAREUltragenyx Pharmaceutical Inc.

Q: Why is RARE on Broken Stocks?

RARE qualifies for the Red List on decline sigma. The recent decline measures 5.0 sigma over a 20-bar window — meaning the size of the move is unusually large relative to the stock's typical daily volatility. Tiering is rules-based and reflects price action only — not company quality, management, or fundamentals.

5.0σ

decline sigma — volatility-normalized move (typical daily 10.07%)

Current

$14.30

Decline depth

—

Decline σ

5.0σ

TFC

5/5 bearish

Rolling 252-day high Up day Down day Last 90 trading days · data from Alpaca

Since tracking began

$RARE has been tracked since 2026-03-01. It was down 47.1% from its 52-week high then — now $14.30.

That's 20.1 percentage points deeper than the day it joined.

From the 52-week high as of 2026-03-02 to today. Split-adjusted. Observed, not a forecast.

Structural break signals

RARE qualifies for the Red List on decline sigma.

Decline depth

—

Not currently in the rolling-252-day ≥20% decline universe.

Time-frame continuity

5/5 bearish

Latest bar on five time frames, daily to yearly. Bearish = 2-Down or red 3. Full bearish continuity — every time frame is broken.

Decline sigma

5.0σ

Drop over the last 20 bars in units of daily volatility (10.07%/day). Past the ≥4σ Watch threshold.

The structural read

What price action says about RARE.

RARE qualifies for the Red List on decline sigma — the recent drop measures 5.0σ over a 20-bar window. Sigma scales the move by the stock's own typical daily volatility, so a small percentage drop in a normally-quiet name can land here when the bigger players miss it on a pure-percent threshold.

Cross-confirmation: also showing 5/5 bearish time frames.

Upstream TFC read: bearish alignment, current phase daily. Last bar types — daily 2U (red), weekly 1 (red), monthly 2D (red).

Questions about RARE

What people ask.

Why is RARE on Broken Stocks?

RARE qualifies for the Red List on decline sigma. The recent drop measures 5.0σ over a 20-bar window — large enough that even a small percentage drop is structurally significant given the stock's typical day-to-day volatility (10.07%).

Is RARE a falling knife?

RARE is on Broken Stocks for time-frame continuity or decline-sigma reasons rather than headline depth, so the falling-knife label doesn't cleanly apply. The phrase usually requires a meaningful percentage drop from a fresh high. See the structural break signals above for the axis that actually triggered the listing.

Is RARE a buy?

Broken Stocks does not issue buy or sell recommendations. The list is a rules-based technical warning system. It tracks structural decline depth and recency — not company quality, management, fundamentals, or news. Always do your own research and consult a licensed advisor.

Where is RARE trading inside its 52-week range?

At $14.30, RARE sits 2.2% of the way from its 52-week low ($13.81) to its 52-week high ($36.57). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.

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