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SIGNUM HQ · Off-exchange tape

Dark Pool Volume Today

Every US stock, ranked by how far its off-exchange trading moved from its own normal — not by the raw percentage, which says almost nothing. Free, from FINRA.

Session of 2026-10-09. FINRA reported off-exchange volume for 12,055 symbols; the average across all of them was 53% of consolidated volume. 271 names cleared the $200M liquidity floor and are ranked below.

Biggest off-exchange volume multiples

That day’s off-exchange volume divided by the name’s own 20-day average. This is a stronger signal than the raw percentage.

TickerDayVol vs normOff-exchShortNormDev
WFF+499.5%23.6×54.5%63.3%49.6%+13.7%p
VZ-10.1%4.9×42.3%58.7%51.8%+6.9%p
TMUS-13.3%4.8×49.1%52.1%38.6%+13.5%p
VEEA+47.3%4.3×45.1%61.9%46.7%+15.2%p
T-10.8%4.0×43.4%57.1%48.3%+8.8%p
MMED-0.5%3.6×40.5%78.7%67.3%+11.4%p
TEVA+4.7%3.3×54.2%36.2%44.2%-8.0%p
NVAX+15.8%3.1×51.4%41.0%49.9%-8.9%p
SBAC+7.3%2.9×45.8%49.8%55.0%-5.2%p
SYNA+0.6%2.8×65.1%71.5%62.1%+9.4%p

Price fell, size went through off-exchange

Down at least 2%, off-exchange volume at least 1.6x its own norm, and a lighter short share than usual. Someone took the other side of the decline away from the public book.

TickerDayVol vs normOff-exchShortNormDev
MOS-5.0%1.9×46.0%28.7%49.9%-21.2%p

Price rose, the short side got heavier

Up at least 1.5% while the short share of off-exchange prints ran at least 8 points above the name’s own norm. Strength met supply off-book.

TickerDayVol vs normOff-exchShortNormDev
VEEA+47.3%4.3×45.1%61.9%46.7%+15.2%p
WFF+499.5%23.6×54.5%63.3%49.6%+13.7%p
PCOR+2.6%1.5×46.3%71.3%59.9%+11.4%p
SNOW+7.4%1.9×48.3%69.2%58.3%+10.9%p

Short share furthest above its baseline

The short share of off-exchange prints, minus the name’s own 20-day norm. Positive means more short-side flow off-book than usual for this name.

TickerDayVol vs normOff-exchShortNormDev
PBR+2.5%1.0×40.2%60.7%37.4%+23.3%p
MDT+0.8%1.6×28.7%73.4%50.9%+22.5%p
NRG+1.6%0.7×36.0%54.2%32.1%+22.1%p
HONA+2.6%1.0×47.1%74.3%53.8%+20.5%p
PAYX-0.5%0.7×40.3%76.5%58.4%+18.1%p
MCHP+0.0%1.4×41.3%80.4%63.4%+17.0%p
MO+0.4%1.4×40.1%68.7%52.3%+16.4%p
NEM+2.0%0.9×34.3%56.1%39.7%+16.4%p
SWKS-5.4%1.5×45.7%79.0%62.8%+16.2%p
EW+1.2%1.1×40.0%63.1%47.1%+16.0%p

Short share furthest below its baseline

The same measure, inverted. A large negative reading means unusually little of the off-exchange size was sold short.

TickerDayVol vs normOff-exchShortNormDev
TTE+0.1%2.2×40.8%13.5%49.2%-35.7%p
SYF-1.2%1.3×41.3%41.0%72.5%-31.5%p
VRTX+1.4%1.7×37.5%31.0%61.1%-30.1%p
PTC+0.4%1.2×52.1%8.2%38.0%-29.8%p
SE+2.5%2.6×53.3%7.3%36.4%-29.1%p
OTIS-0.2%0.9×42.5%26.3%52.7%-26.4%p
KVUE-0.2%0.9×40.8%17.0%41.7%-24.7%p
QSR+0.4%1.2×39.7%38.7%62.7%-24.0%p
RKT-2.4%0.9×56.4%34.3%56.5%-22.2%p
SAP+1.1%1.4×50.7%37.9%59.2%-21.3%p

How to read these numbers

The raw percentage is not a signal. Roughly half of all US share volume prints away from the public order book on an ordinary day. A name at 45% off-exchange is not "heavily dark-pooled" — it is normal. Only the distance from its own baseline carries information.

The short share is not a bearish vote. Across 11,663 symbols the median off-exchange short share is about 49%. Wholesalers filling retail buy orders sell short and cover later, so half of that column is plumbing, not positioning. Compare it to the same name’s own norm, never to 50%.

Volume multiple beats percentage. A name printing 2x its usual off-exchange size is saying something. A name printing 55% instead of 50% is not.

This is T+1, not live. FINRA publishes the prior session. Nothing here is an intraday feed, and nothing here is a prediction.

Method and source

Source: FINRA Reg SHO Daily Short Sale Volume, the regulatory record every US off-exchange trade is reported to. All three Trade Reporting Facilities are summed per symbol.

Off-exchange share = off-exchange volume divided by consolidated volume for the same session.

Baselines are each symbol’s own trailing 20 sessions. A name needs at least 10 sessions of history before any multiple or deviation is shown.

Only names above $200M in consolidated dollar volume are ranked — multiples get large easily in thin names.

ETFs are excluded. Authorized participants short the fund while creating and redeeming shares, which swings the off-exchange short share mechanically. Left in, they fill every deviation list and mean nothing.

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Data source: FINRA. Provided free and without additional charge. Educational and informational only — not investment advice, and no guarantee of accuracy or results.