Decline depth
-57.9%
From rolling 252-day high of $24.23, 79d ago.
Past the 40% Red List threshold.
Red List
AMPXAmprius Technologies, Inc.
Industrials · Electrical Equipment & Parts · small-cap ($1.3B)
-57.9%
from rolling 252-day high of $24.23 set 2026-06-02 · 79d ago
Current
$10.20
Decline depth
-57.9%
Decline σ
4.3σ
TFC
2/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Since tracking began
$AMPX has been tracked since 2026-03-01. It was down 27.7% from its 52-week high then — now down -57.9%.
That's 7.8 percentage points deeper than the day it joined. It bottomed 47.3% below that high along the way.
Decline from the 52-week high as it stood on 2026-03-02 (fixed anchor) → today. Split-adjusted, Alpaca. Observed history, not a forecast.
Structural break signals
AMPX qualifies for the Red List on decline depth.
Time-frame continuity
2/5 bearish
Latest bar across daily/weekly/monthly/quarterly/yearly time frames. A bar counts as bearish when it's a 2-Down or a red 3.
Decline sigma
4.3σ
Drop from local high over the last 5 bars, expressed in units of the stock's typical daily volatility (5.98% per day).
Past the ≥4σ Watch threshold.
The structural read
What price action says about AMPX.
AMPX qualifies for the Red List on decline depth — down -57.9% from its rolling 252-day high. Past the 40% threshold, the deepest tier in the taxonomy. Depth plus recency: this is the pattern many investors call a falling knife.
Cross-confirmation: decline sigma also reads 4.3σ over 5 bars.
Earnings on file: 2026-08-04. Tiering is unaffected by earnings dates — listings reflect price structure only.
Questions about AMPX
What people ask.
Why is AMPX on Broken Stocks?
AMPX qualifies for the Red List on decline depth. It is down -57.9% from its rolling 252-day high of $24.23, set on 2026-06-02 — 79d ago.
Is AMPX a falling knife?
By the most common technical definition — a steep, recent breakdown from a fresh high — yes. AMPX is down -57.9% from its 52-week high of $24.23, set 79d ago. That combination of depth (past the 30% Amber threshold) and recency (high set inside the last 120 days) is the textbook falling-knife pattern. Whether to try to catch it is a separate question — historically most attempts to bottom-pick continue lower before reversing. Broken Stocks flags the pattern; it does not recommend buying or selling.
Is AMPX 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 AMPX trading inside its 52-week range?
At $10.20, AMPX sits 22.7% of the way from its 52-week low ($6.07) to its 52-week high ($24.23). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.
How fast has AMPX been declining?
The current 57.9% decline accrued over 79d, which annualizes to roughly -267.5% 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 AMPX compare to its sector?
There are 151 other Industrials tickers on Broken Stocks: 66 Red, 42 Amber, 43 Watch, with 29 showing recovering structural signals. Median sector decline is -30.8% — AMPX's decline is deeper than the sector median.
Does AMPX'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 (2026-08-04) is shown for reference only — listings can move tier between scans based on closing prices, regardless of fundamentals or news events.