WAT Dark Pool Activity
Waters Corporation
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 409K WAT shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 228K of those shares (55.6%) were marked short or short-exempt, below WAT's 30-day rolling average of 58.2% (z-score -0.21). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), WAT's off-exchange short volume ratio ranged from 33.9% to 70.6% and averaged 56.2%; the latest reading is below that 10-session average.
Off-Exchange Volume
409K
Short Volume
228K
Short Volume Ratio
55.6%
30-Day Average
58.2%
z-score -0.21
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 476K | 161K | 33.9% |
| Oct 13, 2026 | 544K | 222K | 40.9% |
| Oct 14, 2026 | 330K | 194K | 58.7% |
| Oct 15, 2026 | 397K | 245K | 61.5% |
| Oct 16, 2026 | 465K | 244K | 52.5% |
| Oct 19, 2026 | 237K | 123K | 52.0% |
| Oct 20, 2026 | 341K | 238K | 69.9% |
| Oct 21, 2026 | 329K | 217K | 66.0% |
| Oct 22, 2026 | 593K | 418K | 70.6% |
| Oct 23, 2026 Latest | 409K | 228K | 55.6% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
WAT dark pool FAQ
- How much WAT off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 409K WAT shares in publicly disseminated off-exchange trades on Oct 23, 2026; 228K of those shares (55.6%) were marked short or short-exempt.
- Is WAT's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, WAT's short volume ratio of 55.6% is below WAT's 30-day rolling average of 58.2% (z-score -0.21). 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.