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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 2026-10-15. FINRA reported off-exchange volume for 11,894 symbols; the average across all of them was 50% of consolidated volume. 609 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
VSTM+3.5%4.7×45.1%44.7%50.3%-5.6%p
BZH-0.4%4.2×37.0%31.1%47.1%-16.0%p
CRWV-15.5%3.8×49.1%46.6%59.0%-12.4%p
WULF-12.6%3.6×48.1%32.4%42.1%-9.7%p
FLEX-9.5%3.5×52.1%14.4%32.2%-17.8%p
WM+1.9%3.2×58.7%34.4%47.0%-12.6%p
FHN-0.4%3.2×38.5%40.4%36.4%+4.0%p
WCN+2.0%3.0×40.1%73.5%52.3%+21.2%p
NVT-5.4%3.0×48.3%32.9%55.2%-22.3%p
TTMI-11.0%3.0×48.7%27.8%42.7%-14.9%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
CRWV-15.5%3.8×49.1%46.6%59.0%-12.4%p
WULF-12.6%3.6×48.1%32.4%42.1%-9.7%p
FLEX-9.5%3.5×52.1%14.4%32.2%-17.8%p
NVT-5.4%3.0×48.3%32.9%55.2%-22.3%p
TTMI-11.0%3.0×48.7%27.8%42.7%-14.9%p
SMTC-7.3%2.9×46.0%30.9%37.5%-6.6%p
AU-3.1%2.9×48.4%18.4%52.2%-33.8%p
HUT-10.4%2.8×39.5%23.0%55.6%-32.6%p
IREN-12.2%2.8×51.2%31.6%36.8%-5.2%p
TSCO-2.8%2.8×52.4%15.2%50.2%-35.0%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
WCN+2.0%3.0×40.1%73.5%52.3%+21.2%p
UNH+4.7%2.1×42.0%55.6%41.9%+13.7%p
AZN+4.0%1.7×39.3%49.0%38.9%+10.1%p
VRSK+2.2%1.7×41.6%50.1%40.3%+9.8%p
AJG+1.8%1.7×42.2%64.7%56.4%+8.3%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
AIG-0.3%0.9×36.0%72.3%49.8%+22.5%p
SO+1.4%1.7×40.8%79.1%57.4%+21.7%p
CNP+0.8%1.2×42.2%86.4%64.8%+21.6%p
CASY+1.9%0.7×39.8%83.0%61.6%+21.4%p
WCN+2.0%3.0×40.1%73.5%52.3%+21.2%p
HAL+0.1%1.1×36.6%55.7%36.9%+18.8%p
BIIB+1.7%1.3×36.7%78.2%60.3%+17.9%p
URI-2.4%1.4×38.9%76.9%59.0%+17.9%p
CNQ-0.6%0.9×22.5%64.6%47.6%+17.0%p
ALB+0.3%1.2×47.9%74.9%58.9%+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
MMED-8.6%2.4×30.5%28.2%64.8%-36.6%p
BMBL+0.3%1.8×48.0%21.1%57.6%-36.5%p
TSCO-2.8%2.8×52.4%15.2%50.2%-35.0%p
HPE-8.3%1.5×40.4%15.3%49.6%-34.3%p
AU-3.1%2.9×48.4%18.4%52.2%-33.8%p
HUT-10.4%2.8×39.5%23.0%55.6%-32.6%p
SITM-9.4%2.3×45.7%28.8%60.3%-31.5%p
QSR+1.6%1.4×32.2%27.1%56.9%-29.8%p
TTE+0.8%1.8×42.6%15.6%44.8%-29.2%p
SNX-4.5%1.1×43.2%26.0%54.6%-28.6%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.