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Market/Dark Pool/ATO

ATO· Atmos Energy

Dark pool · off-exchange short volume
as of 2026-11-05

ATO's off-exchange short-volume ratio was 50.5% on 5 Nov 2026, above its 20-day average of 45.9%. Off-exchange trading was 31% of volume over the last 20 sessions. 16 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 4 Nov 2026.

Short ratio (latest)
50.5%
20-day average
45.9%
Off-exchange share (20d)
31%

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

190.57
0.12B
187.04
0.92B
183.51
1.30B
179.98
1.26B
176.45
2.44B
172.92
2.91B
169.39
3.55B
165.86
3.30B
162.33
2.12B
158.80
1.06B
155.28
1.40B
151.75
1.70B

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.

ATO Dark Pool (Atmos Energy): Off-Exchange & Short Volume — Tapelab