Decline depth
-64.5%
From rolling 252-day high of $35.58, 236d ago.
Past the 40% Red List threshold.
-64.5%
from rolling 252-day high of $35.58 set 2026-01-16 · 236d ago
Current
$12.64
Decline depth
-64.5%
Decline σ
4.6σ
TFC
3/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Since tracking began
$QDEL has been tracked since 2026-03-01. It was down 45.4% from its 52-week high then — now down -64.5%.
That's 25.0 percentage points deeper than the day it joined. It bottomed 75.9% below that high along the way.
From the 52-week high as of 2026-03-02 to today. Split-adjusted. Observed, not a forecast.
Structural break signals
QDEL qualifies for the Red List on decline depth.
Time-frame continuity
3/5 bearish
Latest bar on five time frames, daily to yearly. Bearish = 2-Down or red 3.
Past the 3/5 Watch threshold.
Decline sigma
4.6σ
Drop over the last 20 bars in units of daily volatility (4.06%/day).
Past the ≥4σ Watch threshold.
The structural read
What price action says about QDEL.
QDEL qualifies for the Red List on decline depth — down -64.5% from its rolling 252-day high. Past the 40% threshold, the deepest tier in the taxonomy.
Cross-confirmation: also showing 3/5 bearish time frames.
Cross-confirmation: decline sigma also reads 4.6σ over 20 bars.
Earnings on file: 2026-08-06. Earnings dates don't affect tiering.
Questions about QDEL
What people ask.
Why is QDEL on Broken Stocks?
QDEL qualifies for the Red List on decline depth. It is down -64.5% from its rolling 252-day high of $35.58, set on 2026-01-16 — 236d ago.
Is QDEL a falling knife?
Not by the strict technical definition. QDEL is down -64.5% from its 52-week high, but that high was set 236d ago — more than 120 days. A falling knife is usually a recent breakdown from a fresh high, not an established multi-quarter downtrend. QDEL is still on the Red List for decline depth, but the freshness component of a falling knife is missing.
Is QDEL 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 QDEL trading inside its 52-week range?
At $12.64, QDEL sits 10.6% of the way from its 52-week low ($9.92) to its 52-week high ($35.58). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.
How fast has QDEL been declining?
The current 64.5% decline accrued over 236d, which annualizes to roughly -99.8% per year. Annualized pace is a sanity check — a 30% decline in three months is a different signal than a 30% decline over two years.
How does QDEL compare to its sector?
There are 276 other Healthcare tickers on Broken Stocks: 134 Red, 81 Amber, 61 Watch, with 34 showing recovering structural signals. Median sector decline is -35.0% — QDEL's decline is deeper than the sector median.
Does QDEL's earnings date affect its tier?
No. Tiering is decided purely by decline depth and recency of the rolling-high date. The earnings date on file (2026-08-06) is shown for reference only — listings can move tier between scans based on closing prices, regardless of fundamentals or news events.