Decline depth
—
Not currently in the rolling-252-day ≥20% decline universe.
Watch
ALCAlcon Inc.
2.6σ
decline sigma — volatility-normalized move (typical daily 1.71%)
Current
$72.93
Decline depth
—
Decline σ
2.6σ
TFC
3/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Since it joined the list
$ALC landed on the list 2026-03-14, down 21.6% from its 52-week high that day — now $72.93.
That's 4.2 percentage points deeper than the day it joined. It bottomed 37.5% below that high along the way.
Decline from the 52-week high as it stood on 2026-03-16 (fixed anchor) → today. Split-adjusted, Alpaca. Observed history, not a forecast.
Structural break signals
ALC qualifies for the Watch on decline sigma.
Time-frame continuity
3/5 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.
Past the 3/5 Watch threshold.
Decline sigma
2.6σ
Drop from local high over the last 10 bars, expressed in units of the stock's typical daily volatility (1.71% per day).
The structural read
What price action says about ALC.
ALC qualifies for the Watch on decline sigma — the recent drop measures 2.6σ over a 10-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 3/5 bearish time frames.
Upstream TFC read: weak alignment, current phase daily. Last bar types — daily 2D (red), weekly 1 (red), monthly 2U (green).
Questions about ALC
What people ask.
Why is ALC on Broken Stocks?
ALC qualifies for the Watch on decline sigma. The recent drop measures 2.6σ over a 10-bar window — large enough that even a small percentage drop is structurally significant given the stock's typical day-to-day volatility (1.71%).
Is ALC a falling knife?
ALC 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 ALC 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 ALC trading inside its 52-week range?
At $72.93, ALC sits 73.6% of the way from its 52-week low ($63.81) to its 52-week high ($76.20). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.