PSX Dark Pool Activity
Phillips 66
Data as of Oct 26, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 26, 2026, FINRA reported 824K PSX shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 517K of those shares (62.6%) were marked short or short-exempt, above PSX's 30-day rolling average of 59.9% (z-score 0.34). Over the last 10 FINRA sessions (Oct 13, 2026 – Oct 26, 2026), PSX's off-exchange short volume ratio ranged from 48.7% to 73.9% and averaged 62.1%; the latest reading is above that 10-session average.
Off-Exchange Volume
824K
Short Volume
517K
Short Volume Ratio
62.6%
30-Day Average
59.9%
z-score 0.34
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 13, 2026 | 823K | 533K | 64.8% |
| Oct 14, 2026 | 1.1M | 649K | 61.1% |
| Oct 15, 2026 | 874K | 438K | 50.2% |
| Oct 16, 2026 | 604K | 294K | 48.7% |
| Oct 19, 2026 | 683K | 454K | 66.5% |
| Oct 20, 2026 | 716K | 464K | 64.8% |
| Oct 21, 2026 | 708K | 523K | 73.9% |
| Oct 22, 2026 | 819K | 485K | 59.2% |
| Oct 23, 2026 | 1.0M | 704K | 69.5% |
| Oct 26, 2026 Latest | 824K | 517K | 62.6% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
PSX dark pool FAQ
- How much PSX off-exchange volume did FINRA report on Oct 26, 2026?
- FINRA's daily short sale volume file reported 824K PSX shares in publicly disseminated off-exchange trades on Oct 26, 2026; 517K of those shares (62.6%) were marked short or short-exempt.
- Is PSX's dark pool short volume ratio unusual right now?
- As of Oct 26, 2026, PSX's short volume ratio of 62.6% is above PSX's 30-day rolling average of 59.9% (z-score 0.34). 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.