VOO Dark Pool Activity
Vanguard S&P 500 ETF
Data as of Sep 10, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Sep 10, 2026, FINRA reported 2.5M VOO shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 1.5M of those shares (61.7%) were marked short or short-exempt, above VOO's 30-day rolling average of 60.7% (z-score 0.10).
Off-Exchange Volume
2.5M
Short Volume
1.5M
Short Volume Ratio
61.7%
30-Day Average
60.7%
z-score 0.10
VOO dark pool FAQ
- How much VOO off-exchange volume did FINRA report on Sep 10, 2026?
- FINRA's daily short sale volume file reported 2.5M VOO shares in publicly disseminated off-exchange trades on Sep 10, 2026; 1.5M of those shares (61.7%) were marked short or short-exempt.
- Is VOO's dark pool short volume ratio unusual right now?
- As of Sep 10, 2026, VOO's short volume ratio of 61.7% is above VOO's 30-day rolling average of 60.7% (z-score 0.10). 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.