PONOR Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-05-25
PONOR dark pool volume for the week of 2026-05-25: 82.9K shares traded across 4 ATS venues with a total notional value of $20K. Volume is down 0.0% week-over-week. Primary routing venues include , VIRTU MATCHIT ATS, POSIT.
Dark pool activity in PONOR 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 2-week historical volume and complete venue breakdown for PONOR.