IWF Dark Pool Activity
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Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 4.9M IWF shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 1.1M of those shares (22.2%) were marked short or short-exempt, below IWF's 30-day rolling average of 46.0% (z-score -1.27). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), IWF's off-exchange short volume ratio ranged from 17.1% to 86.4% and averaged 48.8%; the latest reading is below that 10-session average.
Off-Exchange Volume
4.9M
Short Volume
1.1M
Short Volume Ratio
22.2%
30-Day Average
46.0%
z-score -1.27
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 4.5M | 2.9M | 65.2% |
| Oct 13, 2026 | 6.5M | 5.7M | 86.4% |
| Oct 14, 2026 | 3.9M | 3.1M | 77.8% |
| Oct 15, 2026 | 5.3M | 904K | 17.1% |
| Oct 16, 2026 | 6.2M | 1.1M | 17.9% |
| Oct 19, 2026 | 2.5M | 885K | 34.7% |
| Oct 20, 2026 | 2.4M | 754K | 30.9% |
| Oct 21, 2026 | 1.9M | 1.3M | 67.0% |
| Oct 22, 2026 | 3.1M | 2.1M | 68.7% |
| Oct 23, 2026 Latest | 4.9M | 1.1M | 22.2% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
IWF dark pool FAQ
- How much IWF off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 4.9M IWF shares in publicly disseminated off-exchange trades on Oct 23, 2026; 1.1M of those shares (22.2%) were marked short or short-exempt.
- Is IWF's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, IWF's short volume ratio of 22.2% is below IWF's 30-day rolling average of 46.0% (z-score -1.27). 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.