Stock ScannerUpdated daily after close
Unusual Volume: Stocks Trading 50%+ Above Their 30-Day Average Volume
Free unusual volume scanner across the full US equity universe — stocks whose session volume ran at least 50% above their own 30-day average and whose close moved 3%+ from the open, ranked by volume spike. A fast read on where institutional flow and breakout pressure are showing up today.
Today's reading
As of market close on Thu, Jul 23, 2026, 78 US stocks traded on unusual volume — at least 50% above their 30-day average with a 3%+ intraday move. NEUP led the tape, trading roughly 94x its normal volume on a +3.2% move. Results are ranked by volume spike; use the filters below to narrow by price and liquidity.
Sources, methodology & freshnessLast updated 2026-07-23 · Open ↓Close ↑
Source
Daily OHLCV, full US universe (TradeStation)
Methodology
volume vs 30-day avg + intraday move thresholds
Updates
Daily after closeLast: 2026-07-23
Maintained & reviewed by Yuriy Matso — methodology shown on the page.
Min $
Min VolM
2026-07-23
| Symbol | Price | Price Change | Volume | Avg Vol (30D) | Volume Spike ↓ |
|---|---|---|---|---|---|
| FSBC | $47.35 | +5.64% | 1.53M | 149.51K | +923.03% |
| NCI | $11.71 | +5.69% | 1.40M | 169.04K | +728.98% |
| RELL | $21.82 | +3.02% | 1.06M | 165.52K | +539.62% |
| NVCR | $19.99 | +11.06% | 8.94M | 1.53M | +482.78% |
| IMAX | $43.96 | +5.29% | 6.40M | 1.20M | +433.83% |
| THRM | $45.61 | +22.61% | 1.74M | 372.64K | +365.64% |
| ADVB | $16.78 | +10.25% | 11.75M | 2.56M | +358.71% |
| ROL | $39.44 | +5.65% | 18.01M | 4.83M | +272.45% |
| SXT | $117.03 | +5.43% | 1.61M | 566.36K | +183.47% |
| BEPC | $33.61 | +3.10% | 4.27M | 1.58M | +169.74% |
| SLG | $53.61 | +4.50% | 3.07M | 1.16M | +164.32% |
| FRME | $41.89 | +5.78% | 1.20M | 460.47K | +161.62% |
| DHR | $192.36 | +3.91% | 13.03M | 5.35M | +143.56% |
| WEX | $171.47 | +7.03% | 1.57M | 647.87K | +143.05% |
| URI | $1139.71 | +3.99% | 1.20M | 506.61K | +137.73% |
| LMT | $568.59 | +4.33% | 3.27M | 1.38M | +136.17% |
| LVS | $46.03 | +3.67% | 10.71M | 4.81M | +122.71% |
| EQPT | $19.40 | +11.37% | 6.64M | 3.07M | +116.29% |
| WYNN | $96.77 | +4.19% | 3.01M | 1.43M | +110.00% |
| PNFP | $99.81 | +4.24% | 2.70M | 1.35M | +100.13% |
| HBNC | $20.05 | +4.65% | 1.51M | 761.71K | +98.56% |
| DYN | $23.89 | +4.10% | 4.67M | 2.38M | +96.11% |
| HIMS | $32.74 | +5.51% | 32.43M | 16.63M | +95.05% |
| BIPC | $41.61 | +3.77% | 2.10M | 1.08M | +95.00% |
| HRI | $163.25 | +7.76% | 1.17M | 621.59K | +88.48% |
| MXL | $91.24 | +5.88% | 6.90M | 3.66M | +88.39% |
| KN | $38.81 | +6.89% | 2.27M | 1.27M | +78.52% |
| RHHBY | $54.02 | +3.76% | 3.06M | 1.73M | +76.48% |
| SFL | $11.86 | +3.76% | 2.75M | 1.64M | +68.11% |
| LHX | $299.67 | +3.51% | 2.60M | 1.60M | +62.02% |
| RLI | $61.16 | +7.30% | 1.50M | 931.00K | +61.57% |
Showing 31 of 78 stocks with unusual volume
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How Unusual Volume Scanner Works
- 1Scan the full US universe after every closeEach trading day we pull end-of-day OHLCV for the entire US equity universe and compute, per stock, its 30-day average daily volume. This runs across thousands of symbols — not just large caps — so small and mid-cap surges surface alongside the household names.
- 2Flag the volume spikesA stock is a candidate when the session's volume is at least 50% above its trailing 30-day average. Volume spike % = (today's volume ÷ 30-day average − 1) × 100, so a stock trading at twice its normal volume shows a 100% spike.
- 3Require a real price moveVolume alone is noisy, so we also require a meaningful intraday move: the close must be at least 3% away from the open (up or down). Pairing a volume surge with price conviction filters out churn and quiet rebalancing flows, leaving the moves that traders actually care about.
- 4Rank by volume spike and filter to your liquidityQualifying stocks are ranked by volume spike % so the most anomalous flow sits on top. Use the min-price and min-volume filters to drop illiquid microcaps, and step back through prior trading days with the date picker to see how a name behaved before and after its spike.
Who Uses Unusual Volume Scanner
Breakout Traders
Volume confirms price. A stock clearing resistance on 2-3x normal volume is far more likely to follow through than the same move on quiet tape — this scanner surfaces those confirmations the moment the close prints.
Momentum Traders
Build a daily watchlist from the top of the spike ranking, then narrow with the min-price and min-volume filters to keep only names liquid enough to trade and exit cleanly.
Swing Traders
Unusual volume often marks the start of a multi-day move. Catching it on day one — before the name shows up on every momentum list — is where the edge lives.
News & Catalyst Watchers
A volume spike with a sharp price move is frequently the market reacting to earnings, guidance, an FDA decision, or an M&A headline. The scanner points you at the reaction so you can go find the cause.
Pro Tips
01
Combine direction with the spike
Sort by volume spike, then read the price-change column. A large up move on a large spike is accumulation; a large down move on a large spike is distribution or a capitulation flush — very different trades.
02
Filter out the microcap noise
The largest spike percentages almost always belong to thin sub-$5 names where a single block trade dwarfs the 30-day average. Raise the min-price and min-volume filters to focus on names you can actually size into.
03
Spikes cluster around catalysts
Most legitimate unusual volume traces to a scheduled or surprise catalyst. Before acting, check earnings dates and the news tape — volume without a knowable reason is more likely to mean-revert.
04
Walk the date picker around the spike
Step back a day or two to confirm the surge was genuinely anomalous rather than a name that simply trades heavy every session. Context separates a one-day event from an ongoing regime change.
Common Issues & Solutions
Why are the top spike percentages so enormous (thousands of percent)?▾
Those are almost always very thin stocks whose 30-day average volume is tiny, so any real interest produces a huge ratio. They are mathematically correct but rarely tradeable. Raise the min-price and min-volume filters to push these to the bottom and surface liquid names.
A stock I expected to see is missing.▾
It likely failed one of the two gates: either volume was under 50% above its 30-day average, or the intraday move was smaller than 3% (close vs open). Both conditions must be true on the same day for a stock to appear.
The list is empty or very short for a given date.▾
Weekends and US market holidays have no session, so those dates show nothing. Use the date arrows to step to the nearest trading day. Quiet, low-dispersion sessions also naturally produce fewer qualifying names.
How is this different from a simple "most active" list?▾
Most-active lists rank by raw share count, so they are dominated by the same mega-caps every day. This scanner ranks by volume relative to each stock's own 30-day baseline, so it surfaces names that are unusually active for them — which is where new information tends to hide.
Frequently Asked Questions
What is an unusual volume scanner?▾
It is a daily screen that finds stocks trading on far more volume than they normally do. This scanner flags any US stock whose session volume is at least 50% above its 30-day average and whose close moved at least 3% from the open, then ranks the results by how large the volume spike was.
How is unusual volume defined here?▾
Two conditions must both be met on the same trading day: (1) volume is at least 50% above the trailing 30-day average, and (2) the close is at least 3% away from the open. The volume spike percentage shown is (today's volume ÷ 30-day average − 1) × 100.
Why does unusual volume matter?▾
Volume is conviction. A price move backed by a surge in volume reflects real money changing hands and is far more likely to persist than the same move on light volume. Unusual volume frequently marks the footprint of institutional buying or selling and the start of multi-day trends.
What universe and data source does this use?▾
It scans the full US equity universe using end-of-day OHLCV from TradeStation, refreshed after every market close. Because it covers thousands of symbols rather than only large caps, surges in small and mid-cap names surface alongside the well-known ones.
How often is the scanner updated?▾
Once per trading day, after the US market close. Use the date picker to step back through prior sessions and review how a stock behaved before and after a spike.
Why are some volume spike percentages in the thousands?▾
Those are typically very thin stocks with tiny 30-day average volumes, so even modest real interest produces a huge ratio. They are accurate but rarely tradeable. Raise the minimum price and minimum volume filters to focus on liquid names.
Can I filter the results?▾
Yes. You can set a minimum price (default $10) and a minimum volume in millions of shares (default 1M) to screen out illiquid microcaps, search by symbol, and sort by any column including price, price change, volume, 30-day average volume, and volume spike.
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Last updated: 2026-07-23