MRK· Merck & Co.
Dark pool · off-exchange short volume
Short ratio (latest)
47.4%
20-day average
47.3%
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
158.32
0.00B
155.44
0.75B
152.57
3.07B
149.69
4.42B
146.81
2.12B
143.93
0.56B
138.17
0.25B
135.29
1.34B
132.42
1.77B
129.54
5.09B
126.66
4.24B
123.78
4.65B
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.