SIM Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-06-22
SIM dark pool volume for the week of 2026-06-22: 2 shares traded across 1 ATS venues with a total notional value of $61.94. Volume is down 94.6% week-over-week. Primary routing venues include , UBS ATS.
Dark pool activity in SIM 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 SIM.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-06-22 | 2 | — | -94.6% |
| 2026-06-15 | 37 | — | — |
| 2026-06-01 | 1 | — | — |
| 2026-05-25 | 1 | — | — |
| 2026-05-04 | 191 | — | +78.5% |
| 2026-04-27 | 107 | — | — |
| 2026-03-16 | 1 | — | -96.2% |
| 2026-03-09 | 26 | — | — |
| 2026-02-02 | 202 | — | +1246.7% |
| 2026-01-26 | 15 | — | +66.7% |
| 2026-01-19 | 9 | — | +50.0% |
| 2026-01-12 | 6 | — | +20.0% |