Unusually heavy trading volume
A technical stock screen computed nightly from daily-close price history (market data). Selection is deterministic — a company appears only when its stored indicator meets the screen's rule; nothing is estimated.
201 companies in the catalog currently match this technical screen. Leading the list is ADT Inc. (ADT): trading on 19.9x its 30-day average volume — unusually heavy activity.
Every company listed meets the rule: unusually heavy trading volume.
| # | Company | Sector | Price | Market cap | Volume vs its 30-day average |
|---|---|---|---|---|---|
| 1 | ADT Inc. (ADT) | Consumer Discretionary | $9.87 | $7.6B | 19.94× |
| 2 | Xerox Holdings Corp (XRX) | Information Technology | $1.67 | $219M | 11.21× |
| 3 | Stewart Info Services Corp (STC) | Financials | $45.48 | $1.4B | 9.81× |
| 4 | Hudson Technologies Inc (HDSN) | Industrials | $4.42 | $186M | 9.14× |
| 5 | Alnylam Pharmaceuticals (ALNY) | Health Care | $174.00 | $23.3B | 8.69× |
| 6 | Sprouts Farmers Market (SFM) | Consumer Staples | $48.00 | $4.4B | 8.29× |
| 7 | Lenz Therapeutics Inc (LENZ) | Health Care | $3.49 | $110M | 8.12× |
| 8 | Livewire Group Inc (LVWR) | Consumer Discretionary | $0.9001 | $185M | 7.78× |
| 9 | Community Health Systems Inc (CYH) | Health Care | $2.41 | $340M | 6.65× |
| 10 | H2O America (HTO) | Utilities | $58.57 | $2.8B | 6.52× |
| 11 | ServiceNow (NOW) | Information Technology | $109.67 | $113.8B | 6.21× |
| 12 | Genco Shipping and Trading Ltd (GNK) | Industrials | $26.66 | $1.2B | 5.84× |
| 13 | Bankwell Financial Group Inc (BWFG) | Financials | $69.65 | $555M | 5.65× |
| 14 | Toyo Ltd (TOYO) | Information Technology | $4.70 | $163M | 5.64× |
| 15 | Titan International Inc (TWI) | Industrials | $4.91 | $317M | 5.58× |
| 16 | Teladoc Health Inc (TDOC) | Health Care | $8.73 | $1.6B | 5.37× |
| 17 | Gbank Finl Hldgs Inc (GBFH) | Financials | $15.22 | $221M | 5.30× |
| 18 | Alphabet Inc. (Class C) (GOOG) | Communication Services | $282.32 | $3.47T | 5.27× |
| 19 | Glaukos Corp (GKOS) | Health Care | $242.48 | $14.4B | 5.17× |
| 20 | Alphabet Inc. (Class A) (GOOGL) | Communication Services | $283.82 | $3.49T | 5.15× |
| 21 | DMC Global Inc. (BOOM) | Materials | $8.48 | $174M | 5.08× |
| 22 | Grid Dynamics Holdings Inc Class A (GDYN) | Information Technology | $9.49 | $763M | 4.85× |
| 23 | Service Corporation International (SCI) | Consumer Discretionary | $75.17 | $10.2B | 4.71× |
| 24 | NWPX Infrastructure Inc (NWPX) | Industrials | $98.00 | $944M | 4.69× |
| 25 | Maplebear Inc. (CART) | Consumer Staples | $57.11 | $13.2B | 4.68× |
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What is unusually heavy trading volume?
Relative volume compares how many shares are trading today with a stock's own recent norm — here, its 30-day average daily volume. A reading of 2x means twice the usual number of shares changed hands. Comparing a stock to its own average (rather than a raw share count) puts a small company and a mega-cap on the same footing.
How do I read the “Unusually heavy trading volume” screen?
This screen lists companies trading at 2x or more of their 30-day average volume, heaviest first. A volume spike shows unusual attention — it can accompany news, an earnings report, or index changes — but the screen only flags the activity; it does not say whether the news is good or bad, and is not a prediction.
New to this? What is Volume & relative volume? →
Data: daily-close price history, recomputed nightly. Every figure is shown with its as-of date on the company page; a company without enough price history for this indicator is excluded, never estimated.
13 covered companies were not evaluated for this screen because their price series end on or before 2026-10-26 (ACA, BRR, BZH, CBC, DOMO, ECHO, ELME, FJET, GLXY, PAAI, RAL, TOI, and 1 more), at least 3 trading sessions behind the 2026-10-29 session the rest of the catalog carries. A technical signal is a claim about the present, so it is not asserted from a series that stops before it. Those companies keep the readings they have on their own page, with the as-of date they were computed from. 7 covered companies were not evaluated for this screen (AKTS, CTVA, HAWK, INHD, MVIS, SHAZ, TSEOQ) because our price history for these companies shows an unadjusted split or scale break. Every indicator read from such a series is an artifact of that break rather than a fact about the company, so none of them is asserted here — which is why the same companies have no 1-year return on their own page either.
Last updated 2026-10-29 — this screen recomputes nightly from daily-close prices, so its members change over time.
Informational only — NOT financial advice. Technical indicators describe past price behavior; they are not predictions. All figures are delayed daily-close data.