Z Dark Pool Activity
Zillow Group, Inc.
Data as of Oct 26, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 26, 2026, FINRA reported 880K Z shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 394K of those shares (44.7%) were marked short or short-exempt, above Z's 30-day rolling average of 33.4% (z-score 1.11). Over the last 10 FINRA sessions (Oct 13, 2026 – Oct 26, 2026), Z's off-exchange short volume ratio ranged from 37.1% to 47.4% and averaged 41.3%; the latest reading is above that 10-session average.
Off-Exchange Volume
880K
Short Volume
394K
Short Volume Ratio
44.7%
30-Day Average
33.4%
z-score 1.11
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 13, 2026 | 1.4M | 595K | 41.8% |
| Oct 14, 2026 | 1.6M | 606K | 37.9% |
| Oct 15, 2026 | 2.7M | 1.1M | 42.5% |
| Oct 16, 2026 | 1.3M | 497K | 37.2% |
| Oct 19, 2026 | 855K | 340K | 39.7% |
| Oct 20, 2026 | 1.2M | 581K | 47.4% |
| Oct 21, 2026 | 1.1M | 417K | 37.1% |
| Oct 22, 2026 | 2.5M | 1.0M | 40.8% |
| Oct 23, 2026 | 968K | 421K | 43.5% |
| Oct 26, 2026 Latest | 880K | 394K | 44.7% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
Z dark pool FAQ
- How much Z off-exchange volume did FINRA report on Oct 26, 2026?
- FINRA's daily short sale volume file reported 880K Z shares in publicly disseminated off-exchange trades on Oct 26, 2026; 394K of those shares (44.7%) were marked short or short-exempt.
- Is Z's dark pool short volume ratio unusual right now?
- As of Oct 26, 2026, Z's short volume ratio of 44.7% is above Z's 30-day rolling average of 33.4% (z-score 1.11). Meridian's dark pool model does not flag this reading as an anomaly.
- What does the dark pool short volume ratio measure?
- FINRA publishes daily short sale volume for trades reported off-exchange to its trade reporting facilities, which include dark pools and other off-exchange venues. The ratio divides FINRA's ShortVolume figure, which counts both short and short-exempt sales, by the total off-exchange shares reported for that day. It is not short interest and not a directional signal: market-maker hedging and reporting mechanics can raise it, so it is context for other signals.