MRK· Merck & Co.

Dark pool · off-exchange short volume

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

MRK's off-exchange short-volume ratio was 34.0% on 4 Nov 2026, below its 20-day average of 36.7%. Off-exchange trading was 34% of volume over the last 20 sessions. 12 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 22 Oct 2026.

Short ratio (latest)

34.0%

20-day average

36.7%

Off-exchange share (20d)

34%

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

156.24

0.38B

153.35

2.65B

150.46

7.52B

147.56

8.31B

144.67

6.45B

141.78

2.73B

138.88

0.76B

135.99

1.20B

133.10

1.38B

130.20

4.22B

127.31

5.19B

124.42

3.41B

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.