IWR Dark Pool Activity
iShares Russell Mid-Cap ETF
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 842K IWR shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 529K of those shares (62.7%) were marked short or short-exempt, below IWR's 30-day rolling average of 65.3% (z-score -0.25). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), IWR's off-exchange short volume ratio ranged from 44.5% to 85.4% and averaged 65.9%; the latest reading is below that 10-session average.
Off-Exchange Volume
842K
Short Volume
529K
Short Volume Ratio
62.7%
30-Day Average
65.3%
z-score -0.25
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 633K | 396K | 62.7% |
| Oct 13, 2026 | 701K | 551K | 78.6% |
| Oct 14, 2026 | 1.1M | 948K | 85.4% |
| Oct 15, 2026 | 982K | 647K | 65.9% |
| Oct 16, 2026 | 786K | 537K | 68.3% |
| Oct 19, 2026 | 868K | 387K | 44.5% |
| Oct 20, 2026 | 852K | 504K | 59.1% |
| Oct 21, 2026 | 781K | 499K | 63.9% |
| Oct 22, 2026 | 840K | 571K | 68.0% |
| Oct 23, 2026 Latest | 842K | 529K | 62.7% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
IWR dark pool FAQ
- How much IWR off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 842K IWR shares in publicly disseminated off-exchange trades on Oct 23, 2026; 529K of those shares (62.7%) were marked short or short-exempt.
- Is IWR's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, IWR's short volume ratio of 62.7% is below IWR's 30-day rolling average of 65.3% (z-score -0.25). 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.