Decline depth
-30.6%
From rolling 252-day high of $43.85, 49d ago.
Past the 30% Amber threshold.
Red List
STROSutro Biopharma, Inc.
-30.6%
from rolling 252-day high of $43.85 set 2026-05-15 · 49d ago
Current
$30.43
Decline depth
-30.6%
Decline σ
2.1σ
TFC
1/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Since it joined the list
$STRO landed on the list 2026-06-15, down 31.1% from its 52-week high that day — now down -30.6%.
Roughly where it joined — no recovery, no further break. It bottomed 35.8% below that high along the way.
Decline from the 52-week high as it stood on 2026-06-15 (fixed anchor) → today. Split-adjusted, Alpaca. Observed history, not a forecast.
Structural break signals
STRO qualifies for the Red List on decline depth.
Time-frame continuity
1/5 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
2.1σ
Drop from local high over the last 5 bars, expressed in units of the stock's typical daily volatility (5.45% per day).
The structural read
What price action says about STRO.
STRO qualifies for the Red List on decline depth — down -30.6% from its rolling 252-day high. Past 30% with the high set inside the last four months — the recency clause that often precedes further breakdown. Depth plus recency: this is the pattern many investors call a falling knife.
52-week range
52W low $23.43
34.3% of range
52W high $43.85
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Questions about STRO
What people ask.
Why is STRO on Broken Stocks?
STRO qualifies for the Red List on decline depth. It is down -30.6% from its rolling 252-day high of $43.85, set on 2026-05-15 — 49d ago.
Is STRO a falling knife?
By the most common technical definition — a steep, recent breakdown from a fresh high — yes. STRO is down -30.6% from its 52-week high of $43.85, set 49d 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 STRO 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 STRO trading inside its 52-week range?
At $30.43, STRO sits 34.3% of the way from its 52-week low ($23.43) to its 52-week high ($43.85). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.
How fast has STRO been declining?
The current 30.6% decline accrued over 49d, which annualizes to roughly -227.9% 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.