GPC Dark Pool Activity
Genuine Parts Company
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 426K GPC shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 309K of those shares (72.6%) were marked short or short-exempt, above GPC's 30-day rolling average of 58.7% (z-score 1.72). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), GPC's off-exchange short volume ratio ranged from 43.0% to 72.6% and averaged 59.1%; the latest reading is above that 10-session average.
Off-Exchange Volume
426K
Short Volume
309K
Short Volume Ratio
72.6%
30-Day Average
58.7%
z-score 1.72
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 237K | 152K | 64.0% |
| Oct 13, 2026 | 256K | 162K | 63.1% |
| Oct 14, 2026 | 336K | 213K | 63.3% |
| Oct 15, 2026 | 405K | 224K | 55.2% |
| Oct 16, 2026 | 395K | 228K | 57.7% |
| Oct 19, 2026 | 485K | 250K | 51.5% |
| Oct 20, 2026 | 849K | 507K | 59.7% |
| Oct 21, 2026 | 763K | 463K | 60.8% |
| Oct 22, 2026 | 815K | 350K | 43.0% |
| Oct 23, 2026 Latest | 426K | 309K | 72.6% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
GPC dark pool FAQ
- How much GPC off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 426K GPC shares in publicly disseminated off-exchange trades on Oct 23, 2026; 309K of those shares (72.6%) were marked short or short-exempt.
- Is GPC's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, GPC's short volume ratio of 72.6% is above GPC's 30-day rolling average of 58.7% (z-score 1.72). 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.