SSD Dark Pool Activity
Simpson Manufacturing Company,
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 205K SSD shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 148K of those shares (72.3%) were marked short or short-exempt, above SSD's 30-day rolling average of 56.7% (z-score 1.44). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), SSD's off-exchange short volume ratio ranged from 55.4% to 73.7% and averaged 65.0%; the latest reading is above that 10-session average.
Off-Exchange Volume
205K
Short Volume
148K
Short Volume Ratio
72.3%
30-Day Average
56.7%
z-score 1.44
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 70K | 45K | 63.8% |
| Oct 13, 2026 | 102K | 62K | 61.0% |
| Oct 14, 2026 | 81K | 52K | 64.0% |
| Oct 15, 2026 | 111K | 66K | 59.1% |
| Oct 16, 2026 | 160K | 102K | 63.6% |
| Oct 19, 2026 | 106K | 76K | 71.4% |
| Oct 20, 2026 | 71K | 39K | 55.4% |
| Oct 21, 2026 | 187K | 138K | 73.7% |
| Oct 22, 2026 | 177K | 116K | 65.6% |
| Oct 23, 2026 Latest | 205K | 148K | 72.3% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
SSD dark pool FAQ
- How much SSD off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 205K SSD shares in publicly disseminated off-exchange trades on Oct 23, 2026; 148K of those shares (72.3%) were marked short or short-exempt.
- Is SSD's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, SSD's short volume ratio of 72.3% is above SSD's 30-day rolling average of 56.7% (z-score 1.44). 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.