SNPS Dark Pool Activity
SYNOPSYS INC
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 584K SNPS shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 190K of those shares (32.5%) were marked short or short-exempt, below SNPS's 30-day rolling average of 41.7% (z-score -1.36). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), SNPS's off-exchange short volume ratio ranged from 29.0% to 43.5% and averaged 36.2%; the latest reading is below that 10-session average.
Off-Exchange Volume
584K
Short Volume
190K
Short Volume Ratio
32.5%
30-Day Average
41.7%
z-score -1.36
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 710K | 262K | 36.9% |
| Oct 13, 2026 | 882K | 383K | 43.5% |
| Oct 14, 2026 | 1.2M | 484K | 40.4% |
| Oct 15, 2026 | 884K | 294K | 33.2% |
| Oct 16, 2026 | 926K | 334K | 36.1% |
| Oct 19, 2026 | 501K | 145K | 29.0% |
| Oct 20, 2026 | 529K | 190K | 35.9% |
| Oct 21, 2026 | 489K | 205K | 41.9% |
| Oct 22, 2026 | 821K | 270K | 32.9% |
| Oct 23, 2026 Latest | 584K | 190K | 32.5% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
SNPS dark pool FAQ
- How much SNPS off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 584K SNPS shares in publicly disseminated off-exchange trades on Oct 23, 2026; 190K of those shares (32.5%) were marked short or short-exempt.
- Is SNPS's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, SNPS's short volume ratio of 32.5% is below SNPS's 30-day rolling average of 41.7% (z-score -1.36). 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.