NSC· Norfolk Southern

Dark pool · off-exchange short volume

as of 2026-11-05

NSC's off-exchange short-volume ratio was 37.6% on 5 Nov 2026, below its 20-day average of 45.4%. Off-exchange trading was 32% of volume over the last 20 sessions. 7 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 22 Oct 2026.

Short ratio (latest)

37.6%

20-day average

45.4%

Off-exchange share (20d)

32%

Darkpool density

big day, short ratio above trendbelow trendbubble size = how unusual ($vol z-score)

Last ~6 months. Bubbles mark days of unusually large off-exchange dollar volume (≥1.5σ vs the trailing 60 days). Daily resolution — not print-level data.

Darkpool levels ±15% of spot, since 2018-10-01

357.91

0.12B

351.02

0.93B

344.14

1.21B

337.26

1.91B

330.37

1.46B

323.49

1.60B

316.61

4.40B

309.73

3.38B

302.84

2.06B

295.96

2.61B

Historical off-exchange $ volume at price: each day's volume spread across that day's range, summed over the full FINRA history. Heavy shelves often act as support/resistance magnets. Amber row = spot's bin.

Off-exchange short-volume ratio

short ratio (20d, right) daily off-exchange share (left)

FINRA daily TRF data, last 2 years. A persistently HIGH short ratio is mostly passive market-maker liquidity provision (commonly read as accumulation pressure) — not naively bearish.