TER Dark Pool Activity
Teradyne, Inc.
Data as of Oct 27, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 27, 2026, FINRA reported 1.1M TER shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 611K of those shares (55.0%) were marked short or short-exempt, above TER's 30-day rolling average of 54.5% (z-score 0.05). Over the last 10 FINRA sessions (Oct 14, 2026 – Oct 27, 2026), TER's off-exchange short volume ratio ranged from 34.9% to 60.3% and averaged 49.7%; the latest reading is above that 10-session average.
Off-Exchange Volume
1.1M
Short Volume
611K
Short Volume Ratio
55.0%
30-Day Average
54.5%
z-score 0.05
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 14, 2026 | 1.1M | 531K | 46.5% |
| Oct 15, 2026 | 1.5M | 513K | 34.9% |
| Oct 16, 2026 | 1.1M | 657K | 60.3% |
| Oct 19, 2026 | 1.2M | 574K | 46.0% |
| Oct 20, 2026 | 843K | 460K | 54.6% |
| Oct 21, 2026 | 820K | 406K | 49.5% |
| Oct 22, 2026 | 1.8M | 1.1M | 59.8% |
| Oct 23, 2026 | 937K | 414K | 44.2% |
| Oct 26, 2026 | 987K | 460K | 46.6% |
| Oct 27, 2026 Latest | 1.1M | 611K | 55.0% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
TER dark pool FAQ
- How much TER off-exchange volume did FINRA report on Oct 27, 2026?
- FINRA's daily short sale volume file reported 1.1M TER shares in publicly disseminated off-exchange trades on Oct 27, 2026; 611K of those shares (55.0%) were marked short or short-exempt.
- Is TER's dark pool short volume ratio unusual right now?
- As of Oct 27, 2026, TER's short volume ratio of 55.0% is above TER's 30-day rolling average of 54.5% (z-score 0.05). 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.