NMIH Dark Pool Activity
NMI Holdings Inc
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 188K NMIH shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 87K of those shares (46.3%) were marked short or short-exempt, below NMIH's 30-day rolling average of 49.8% (z-score -0.35). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), NMIH's off-exchange short volume ratio ranged from 31.2% to 51.3% and averaged 42.7%; the latest reading is above that 10-session average.
Off-Exchange Volume
188K
Short Volume
87K
Short Volume Ratio
46.3%
30-Day Average
49.8%
z-score -0.35
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 122K | 63K | 51.3% |
| Oct 13, 2026 | 216K | 67K | 31.2% |
| Oct 14, 2026 | 193K | 74K | 38.5% |
| Oct 15, 2026 | 139K | 61K | 43.6% |
| Oct 16, 2026 | 75K | 31K | 41.7% |
| Oct 19, 2026 | 104K | 50K | 48.2% |
| Oct 20, 2026 | 153K | 58K | 37.8% |
| Oct 21, 2026 | 157K | 63K | 40.1% |
| Oct 22, 2026 | 215K | 104K | 48.2% |
| Oct 23, 2026 Latest | 188K | 87K | 46.3% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
NMIH dark pool FAQ
- How much NMIH off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 188K NMIH shares in publicly disseminated off-exchange trades on Oct 23, 2026; 87K of those shares (46.3%) were marked short or short-exempt.
- Is NMIH's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, NMIH's short volume ratio of 46.3% is below NMIH's 30-day rolling average of 49.8% (z-score -0.35). 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.