PTC· PTC Inc.

Dark pool · off-exchange short volume

Dark pool as of 2026-11-04 · latest session 2026-11-05

PTC's off-exchange short-volume ratio was 7.2% on 4 Nov 2026, below its 20-day average of 14.2%. Off-exchange trading was 47% of volume over the last 20 sessions. 8 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 5 Oct 2026.

Short ratio (latest)

7.2%

20-day average

14.2%

Off-exchange share (20d)

47%

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

221.23

0.01B

217.35

0.29B

213.47

0.71B

209.58

0.66B

205.70

1.27B

201.82

1.55B

197.94

1.11B

194.06

10.1B

190.18

1.74B

186.30

2.02B

182.42

2.58B

178.54

3.29B

174.65

3.62B

170.77

3.59B

166.89

2.01B

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.