SNY Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
SNY dark pool volume for the week of 2026-07-06: 3.6M shares traded across 23 ATS venues with a total notional value of $154.5M. Volume is up 19.5% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, SIGMA X2.
Dark pool activity in SNY 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 SNY.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 3.6M | — | +19.5% |
| 2026-06-29 | 3.0M | — | -51.9% |
| 2026-06-22 | 6.2M | — | +205.8% |
| 2026-06-15 | 2.0M | — | -31.5% |
| 2026-06-08 | 3.0M | — | +26.7% |
| 2026-06-01 | 2.3M | — | +12.5% |
| 2026-05-25 | 2.1M | — | -23.5% |
| 2026-05-18 | 2.7M | — | -37.0% |
| 2026-05-11 | 4.3M | — | +55.4% |
| 2026-05-04 | 2.8M | — | +6.4% |
| 2026-04-27 | 2.6M | — | — |
| 2026-03-23 | 3.5M | — | -7.9% |