ISSC Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
ISSC dark pool volume for the week of 2026-07-06: 285.5K shares traded across 24 ATS venues with a total notional value of $5.3M. Volume is down 7.0% week-over-week. Primary routing venues include , MS TRAJECTORY CROSS (ATS-1), SIGMA X2.
Dark pool activity in ISSC reflects institutional order flow executing on Alternative Trading Systems (ATS) registered with the SEC — private venues where large-block trades are matched away from public exchanges to minimize price impact. StonkWhisper ingests FINRA-published ATS volume data to track these off-exchange flows. Sustained elevation in dark pool percentage — particularly when concentrated at specific venues — can indicate institutional accumulation or distribution ahead of significant price moves. The interactive charts below show 12-week historical volume and complete venue breakdown for ISSC.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 285.5K | — | -7.0% |
| 2026-06-29 | 307.1K | — | -36.0% |
| 2026-06-22 | 479.9K | — | +37.9% |
| 2026-06-15 | 348.0K | — | -17.1% |
| 2026-06-08 | 419.8K | — | +4.2% |
| 2026-06-01 | 402.9K | — | -16.9% |
| 2026-05-25 | 484.8K | — | +4.6% |
| 2026-05-18 | 463.6K | — | -33.8% |
| 2026-05-11 | 700.1K | — | +177.9% |
| 2026-05-04 | 252.0K | — | -24.8% |
| 2026-04-27 | 335.2K | — | — |
| 2026-03-23 | 655.4K | — | +20.7% |