IVV Dark Pool Activity
iShares Core S&P 500 ETF
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 1.0M IVV shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 536K of those shares (51.4%) were marked short or short-exempt, above IVV's 30-day rolling average of 46.4% (z-score 0.38). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), IVV's off-exchange short volume ratio ranged from 30.3% to 57.5% and averaged 49.6%; the latest reading is above that 10-session average.
Off-Exchange Volume
1.0M
Short Volume
536K
Short Volume Ratio
51.4%
30-Day Average
46.4%
z-score 0.38
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 965K | 484K | 50.1% |
| Oct 13, 2026 | 1.1M | 561K | 52.1% |
| Oct 14, 2026 | 1.3M | 699K | 52.5% |
| Oct 15, 2026 | 1.5M | 700K | 46.2% |
| Oct 16, 2026 | 1.5M | 718K | 48.9% |
| Oct 19, 2026 | 1.2M | 362K | 30.3% |
| Oct 20, 2026 | 1.5M | 784K | 52.5% |
| Oct 21, 2026 | 1.3M | 744K | 57.5% |
| Oct 22, 2026 | 1.6M | 847K | 54.0% |
| Oct 23, 2026 Latest | 1.0M | 536K | 51.4% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
IVV dark pool FAQ
- How much IVV off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 1.0M IVV shares in publicly disseminated off-exchange trades on Oct 23, 2026; 536K of those shares (51.4%) were marked short or short-exempt.
- Is IVV's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, IVV's short volume ratio of 51.4% is above IVV's 30-day rolling average of 46.4% (z-score 0.38). 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.