ICLR Dark Pool Activity
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Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 439K ICLR shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 247K of those shares (56.3%) were marked short or short-exempt, above ICLR's 30-day rolling average of 56.2% (z-score 0.01). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), ICLR's off-exchange short volume ratio ranged from 32.2% to 78.4% and averaged 62.7%; the latest reading is below that 10-session average.
Off-Exchange Volume
439K
Short Volume
247K
Short Volume Ratio
56.3%
30-Day Average
56.2%
z-score 0.01
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 405K | 130K | 32.2% |
| Oct 13, 2026 | 295K | 151K | 51.3% |
| Oct 14, 2026 | 294K | 221K | 75.2% |
| Oct 15, 2026 | 342K | 221K | 64.6% |
| Oct 16, 2026 | 238K | 187K | 78.4% |
| Oct 19, 2026 | 304K | 227K | 74.7% |
| Oct 20, 2026 | 410K | 313K | 76.4% |
| Oct 21, 2026 | 438K | 231K | 52.8% |
| Oct 22, 2026 | 372K | 242K | 65.2% |
| Oct 23, 2026 Latest | 439K | 247K | 56.3% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
ICLR dark pool FAQ
- How much ICLR off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 439K ICLR shares in publicly disseminated off-exchange trades on Oct 23, 2026; 247K of those shares (56.3%) were marked short or short-exempt.
- Is ICLR's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, ICLR's short volume ratio of 56.3% is above ICLR's 30-day rolling average of 56.2% (z-score 0.01). 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.