WDC
Dark pool — off-exchange short volume
Short ratio (latest)
52.7%
20-day average
49.9%
Off-exchange share (20d)
42%
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
560.51
0.83B
550.68
1.63B
540.84
3.11B
531.01
3.45B
521.18
2.88B
511.34
2.19B
501.51
2.82B
491.67
2.78B
481.84
4.50B
472.01
4.65B
462.17
3.76B
452.34
2.32B
442.51
2.46B
432.67
3.36B
422.84
2.03B
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.