Decline depth
-55.1%
From rolling 252-day high of $109.50, 261d ago.
Past the 40% Red List threshold.
-55.1%
from rolling 252-day high of $109.50 set 2025-09-09 · 261d ago
Current
$49.11
Decline depth
-55.1%
Decline σ
4.9σ
TFC
5/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Since tracking began
$BSX has been tracked since 2026-03-01. It was down 30.4% from its 52-week high then — now down -55.1%.
That's 29.2 percentage points deeper than the day it joined.
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
BSX qualifies for the Red List on decline depth.
Time-frame continuity
5/5 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.
Full bearish continuity — every time frame is broken.
Decline sigma
4.9σ
Drop from local high over the last 5 bars, expressed in units of the stock's typical daily volatility (3.52% per day).
Past the ≥4σ Watch threshold.
The structural read
What price action says about BSX.
BSX qualifies for the Red List on decline depth — down -55.1% from its rolling 252-day high. Past the 40% threshold, the deepest tier in the taxonomy.
Cross-confirmation: also showing 5/5 bearish time frames.
Cross-confirmation: decline sigma also reads 4.9σ over 5 bars.
Earnings on file: 2026-07-29. Tiering is unaffected by earnings dates — listings reflect price structure only.
52-week range
52W low $52.52
0.0% of range
52W high $109.50
Sector context · Healthcare
194 other Healthcare tickers are on Broken Stocks.
88
Red List
47
Amber
59
Watch
-35.8%
Median decline
Worst in sector: OPRX (-77.1%). Least-bad: MRNA (-20.1%). See all Healthcare listings →
Related — same sector
Closest decliners to BSX
Red List
ZTS
Zoetis Inc.
Red ListRecovering
RNAC
Cartesian Therapeutics, Inc.
Red List
TMDX
TransMedics Group, Inc.
Red List
CRVS
Corvus Pharmaceuticals, Inc.
Red ListRecovering
FULC
Fulcrum Therapeutics, Inc.
Red List
WAY
Waystar Holding Corp.
Questions about BSX
What people ask.
Why is BSX on Broken Stocks?
BSX qualifies for the Red List on decline depth. It is down -55.1% from its rolling 252-day high of $109.50, set on 2025-09-09 — 261d ago.
Is BSX a falling knife?
Not by the strict technical definition. BSX is down -55.1% from its 52-week high, but that high was set 261d ago — more than 120 days. A falling knife is usually a recent breakdown from a fresh high, not an established multi-quarter downtrend. BSX is still on the Red List for decline depth, but the freshness component of a falling knife is missing.
Is BSX 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 BSX trading inside its 52-week range?
At $49.11, BSX sits 0.0% of the way from its 52-week low ($52.52) to its 52-week high ($109.50). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.
How fast has BSX been declining?
The current 55.1% decline accrued over 261d, which annualizes to roughly -77.1% 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 BSX compare to its sector?
There are 194 other Healthcare tickers on Broken Stocks: 88 Red, 47 Amber, 59 Watch, with 108 showing recovering structural signals. Median sector decline is -35.8% — BSX's decline is deeper than the sector median.
Does BSX'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 (2026-07-29) is shown for reference only — listings can move tier between scans based on closing prices, regardless of fundamentals or news events.