HCA· HCA Healthcare

Dark pool · off-exchange short volume

as of 2026-11-05

HCA's off-exchange short-volume ratio was 57.9% on 5 Nov 2026, in line with its 20-day average of 58.0%. Off-exchange trading was 36% of volume over the last 20 sessions. 12 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 4 Nov 2026.

Short ratio (latest)

57.9%

20-day average

58.0%

Off-exchange share (20d)

36%

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

551.56

0.19B

541.34

1.31B

531.13

2.54B

520.91

1.08B

510.70

1.64B

500.49

3.11B

490.27

2.56B

480.06

4.18B

469.84

7.01B

459.63

3.57B

449.42

1.51B

439.20

2.77B

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.