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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.

Unusual Volume2026-09-04 · close
94stocks flagged
Biggest spike
AOUT
88× avg vol
Most traded
CBRS
$2.9B
With a story
5 +47
verified + headlines

Volume ≥50% above the 30-session average and close ≥3% above open. Featured drivers are researched each session; the table also auto-matches company news and fresh SEC filings.

Today's reading

As of market close on Fri, Sep 4, 2026, 94 US stocks traded on unusual volume — at least 50% above their 30-day average with a 3%+ intraday move. AOUT led the tape, trading roughly 88x its normal volume on a +13.1% move. The biggest verified story on the tape: CRDO ($1.8B traded) — Sep 4: +3.9% to $170.57 on 1.8x average volume, the first gain since fiscal Q1 results reported Sep 1 after the close. 47 of the flagged names carry an auto-matched news headline or fresh SEC filing in the table. Results are ranked by volume spike; use the filters below to narrow by price and liquidity.

Sources, methodology & freshnessLast updated 2026-09-04 · Open ↓
Source
Daily OHLCV, full US universe (TradeStation)
Methodology
volume vs 30-day avg + intraday move thresholds
Updates
Daily after closeLast: 2026-09-04
Maintained & reviewed by Yuriy Matso — methodology shown on the page.

Flagged names with a verified news or fundamental driver, ranked by dollar turnover. Everything else from the session is in the table below.

309news171avg06-1109-04
CRDO$170.57+5.2%
Earnings
$1.8B traded · 1.8× avg volume

Sep 4: +3.9% to $170.57 on 1.8x average volume, the first gain since fiscal Q1 results reported Sep 1 after the close. Revenue was $479.0 million, up 114.7%, with non-GAAP EPS of $1.20 and a Q2 revenue guide of $525 to $535 million. The stock fell 20.2% on Sep 2 on 29.5 million shares and is still 17.6% below its pre-earnings close of $206.95.

Credo sells the active electrical cables, retimers and optical parts that connect AI accelerators inside data centers, and its results now hinge on a few hyperscaler customers. Non-GAAP gross margin was 68.0% and is guided to 67% to 69%, with GAAP net income of $129.4 million and $764.3 million of cash. The stock is 43.6% below its Jun 22 52-week high of $302.52 and 94.2% above the Mar 30 low of $87.81. A 3.9% bounce on a 3.5% semiconductor-index day is the sector, not a verdict on the quarter; the three-session drawdown is the story the turnover reflects.

Credo fiscal Q1 2027 results, 8-K exhibit 99.1, Sep 1
198151news177avg06-1109-04
EFX$177.05+5.4%
Policy
$534M traded · 2.5× avg volume

Sep 4: -6.4% to $177.05 on 2.8x average volume, after opening 11.2% lower at $167.99. FHFA Director Bill Pulte posted on X Thursday night that Equifax, Experian and TransUnion "have been overcharging Americans for far too long." He added that "this will end soon" and that FHFA is "seriously considering bi-merge, and stronger solutions." On Friday he said FHFA is studying a single credit report. He also instructed Fannie Mae and Freddie Mac to approve all lenders to use VantageScore.

Equifax sells credit reports and workforce data, and mortgage tri-merge reports, one from each bureau per application, are a high-margin recurring line. A move to two reports, or one, removes a third or two thirds of that volume across the industry. TransUnion fell 5.9% and Fair Isaac 16.7% on the same posts. The Mortgage Bankers Association said lenders reported 40% to 50% average increases in credit-reporting costs for 2026. The stock is 32.5% below its Sep 17, 2025 52-week high of $262.33 and 16.5% above the Jun 25 low of $151.93. Nothing has been ordered on bi-merge yet; watch for a formal FHFA directive to the enterprises, which is what would change revenue.

American Banker: Pulte says 'cartel-like' bureaus should cut costs, eyes bi-merge, Sep 4
264173news252avg06-1109-04
FIVE$252.20+5.6%
Earnings
$467M traded · 1.8× avg volume

Sep 4: +5.1% to $252.20 on 1.6x average volume, recovering the Sep 3 reversal that followed Q2 results reported Sep 2 after the close. Net sales rose 22.9% to $1.26 billion on a 14.1% comparable-sales gain, and adjusted EPS was $1.68. Full-year guidance rose to $5.63 to $5.71 billion of sales and $9.83 to $10.31 of adjusted EPS, from $8.65 to $9.05. On Sep 3 the stock opened 5.7% higher at $257.00 and closed down 1.3%.

Five Below is a value retailer for kids and teens with 2,022 stores in 46 states after 52 net openings in the quarter. GAAP EPS of $3.99 included $163.6 million of pre-tax tariff refunds under IEEPA, which is why the adjusted figure is the one to use. Q3 is guided to $1.21 to $1.23 billion of sales and comps of 8% to 10%, a deceleration from 14.1%; full-year comps are guided to 10% to 12%. The stock is 4.0% below its Aug 24 52-week high of $262.72 and 82.1% above the Oct 10, 2025 low of $138.49. Two sessions of two-way trade on a beat-and-raise say the debate is the comp deceleration, not the quarter.

Five Below second quarter fiscal 2026 results, 8-K exhibit 99.1, Sep 2
33.7224.17news28.65avg06-1109-04
TYRA$28.65+16.9%
News
$53M traded · 3.3× avg volume

Sep 4: +15.2% to $28.65 on 4.2x average volume after Tyra set a date for its SURF302 readout. An 8:00 am ET release said the company will host a call on Wednesday, Sep 9 at 8:00 am ET to present initial results. SURF302 is the Phase 2 study of oral dabogratinib in intermediate-risk non-muscle invasive bladder cancer. The date is the news; no data was released.

Tyra is a clinical-stage biotech built around FGFR3-selective inhibitors, and dabogratinib is its lead program. The Aug 4 quarterly report guided the readout to safety data on more than 40 patients and efficacy on more than 20, across the 50 mg and 60 mg daily doses. Cash was $353.9 million at Jun 30, with runway into the second half of 2028. The stock is 27.7% below its Apr 2 52-week high of $39.61 and 142% above the Sep 9, 2025 low of $11.82. The put-side signature two sessions before a binary readout reads as protection on a stock that just rallied into it, not a call on the data.

Tyra Biosciences to host conference call on initial SURF302 results on September 9, 2026, Sep 4
16.57news26.22avg06-1109-04
TITN$26.22+14.5%
Analyst
$23M traded · 3.4× avg volume

Sep 2: +13.9% on roughly 3.5x normal volume to $23.39, with no company release dated to the session. The only dated driver is Baird's Aug 31 upgrade to Outperform from Neutral (target $29 from $20), citing equipment inventory down nearly $600 million from its fiscal 2025 second-quarter peak; the whole ag-equipment complex extended its run on Sep 2 (CNH +9.2%, Deere +3.3%, AGCO +3.6%).

Titan Machinery is a CNH-brand farm and construction equipment dealer, so it trades as a leveraged version of the manufacturers' cycle. Baird's case is that destocking is done, the stock trades under 1.0x tangible book, and normalized earnings power exceeds $3 a share. Note the timing gap: the note came Monday and the stock did nothing Tuesday, so Sep 2 reads as sector momentum catching a small-cap late. The stock is 3.1% below its 52-week high of $24.13.

Investing.com: Baird upgrades Titan Machinery stock rating on inventory clearing
Min $
Min VolM
2026-09-04
Symbol Price Volume Spike
AOUT$14.48+8722.95%
NX$22.93+532.37%
BIAF$15.27+378.93%
TYRA$28.65+232.53%
GOLD$46.13+188.32%
EFX$177.05+145.11%
TARS$90.78+121.02%
WWW$20.76+114.18%
TRU$79.88+106.68%
CBRS$210.05+99.24%
PAYP$17.04+88.12%
MRX$78.27+85.97%
CHA$11.66+84.85%
KMT$31.02+83.51%
AEHR$86.26+80.55%
CRDO$170.57+80.21%
FIVE$252.20+77.48%
AGCO$133.40+72.06%
OC$138.72+66.33%
NMRK$15.25+65.90%
DHT$20.87+63.40%
ALAB$310.40+55.93%
Showing 22 of 94 stocks with unusual volume

News column: the best company-news headline or fresh SEC filing auto-matched to each flagged name for this session (roundups and listicles filtered out). Machine-gathered and linked to its source, not editorially verified — the “What's driving the tape” cards above are the researched, verified drivers.

How Unusual Volume Scanner Works

  1. 1
    Scan the full US universe after every close
    Each 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.
  2. 2
    Flag the volume spikes
    A 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.
  3. 3
    Require a real price move
    Volume 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.
  4. 4
    Rank by volume spike and filter to your liquidity
    Qualifying 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: 2026-09-04