Decline depth
—
Not currently in the rolling-252-day ≥20% decline universe.
Amber List
NSCNorfolk Southern Corp.
7.9σ
decline sigma — volatility-normalized move (typical daily 1.22%)
Current
$323.30
Decline depth
—
Decline σ
7.9σ
TFC
3/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Structural break signals
NSC qualifies for the Amber List on decline sigma.
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
7.9σ
Drop over the last 20 bars in units of daily volatility (1.22%/day).
Past the ≥6σ Amber threshold.
The structural read
What price action says about NSC.
NSC qualifies for the Amber List on decline sigma — the recent drop measures 7.9σ over a 20-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.
Questions about NSC
What people ask.
Why is NSC on Broken Stocks?
NSC qualifies for the Amber List on decline sigma. The recent drop measures 7.9σ over a 20-bar window — large enough that even a small percentage drop is structurally significant given the stock's typical day-to-day volatility (1.22%).
Is NSC a falling knife?
NSC 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 NSC 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 NSC trading inside its 52-week range?
At $323.30, NSC sits 42.3% of the way from its 52-week low ($297.45) to its 52-week high ($358.60). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.