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NYSEEquity · Volume & Price

BIO-B

Bio-Rad Laboratories Inc

US Healthcare Medical Devices

52-week price+28.2%
Latest week
25 Sep 2026
Chart Console
Weekly close
365.08 USD
Daily Price
Fair value
300.17 USD
Weekly Trend
Next-week expectancy
Negative 20.28%
Weekly Report

Sharemaestro · Completed weekly data

Volume & Price

Where trading activity is concentrated, how it has changed, and what volume adds to the price move.

Open Volume & Price screener →

Latest week ·

Price is above the earlier activity area

The latest close is above the activity area established before the last four weeks. 4 of those four closes were above that area. Recent volume balance is mixed; the estimated activity centre is higher.

52 weeks2025-10-03 to 2026-09-25Weekly volume estimate

The relationship beneath price · 2026-09-25

Mixed evidence

These diagnostics use fixed windows through the latest completed week. Chart period controls below change the activity study separately.

Four-week price move0.0%23.1% over thirteen weeks
Latest relative volume1.19×1.00× recent four-week median
Closing pressure0.0%Volume-weighted position within weekly ranges
Up-week volume share60.4%0.0% in declining weeks · last 13 weeks

Price and pressure through time

Compare four-week returns with four-week closing pressure. Opposite signs reveal disagreement; agreement alone is not predictive.

View weekly evidence values
Week4-week returnPressureRelative volume
2025-10-0315.3%54.2%0.48×
2025-10-1015.3%64.8%0.52×
2025-10-170.0%0.0%0.51×
2025-10-2412.7%63.8%2.65×
2025-10-316.4%2.7%2.48×
2025-11-077.2%37.7%13.18×
2025-11-1410.4%41.4%1.00×
2025-11-21-3.2%36.0%0.95×
2025-11-282.5%54.7%0.92×
2025-12-051.7%52.0%0.72×
2025-12-12-1.2%32.7%0.41×
2025-12-190.0%0.0%0.44×
2025-12-260.0%0.0%0.16×
2026-01-020.0%0.0%0.11×
2026-01-090.0%0.0%0.20×
2026-01-160.0%0.0%0.38×
2026-01-230.7%0.0%0.40×
2026-01-300.7%0.0%0.13×
2026-02-06-5.0%92.9%14.62×
2026-02-13-17.3%89.3%0.49×
2026-02-20-16.3%92.5%0.49×
2026-02-27-14.0%88.6%1.05×
2026-03-06-4.4%18.0%0.54×
2026-03-134.5%83.7%5.08×
2026-03-202.6%80.0%0.16×
2026-03-27-0.1%87.5%0.69×
2026-04-03-1.3%89.4%2.19×
2026-04-103.2%10.4%1.62×
2026-04-173.2%9.9%0.42×
2026-04-2411.5%34.5%1.62×
2026-05-017.6%-1.4%9.03×
2026-05-08-7.8%-57.8%19.07×
2026-05-15-5.8%43.7%54.15×
2026-05-22-10.7%41.6%2.14×
2026-05-291.6%47.4%1.16×
2026-06-0519.0%95.1%0.71×
2026-06-1216.6%19.8%1.93×
2026-06-1913.7%29.0%0.29×
2026-06-26-2.5%-2.2%14.94×
2026-07-03-2.5%-2.2%0.82×
2026-07-10-1.9%42.4%11.29×
2026-07-171.7%40.1%1.35×
2026-07-244.4%78.6%0.35×
2026-07-314.4%77.2%0.71×
2026-08-0712.9%0.0%1.01×
2026-08-148.9%0.0%0.50×
2026-08-2118.0%45.1%1.83×
2026-08-2818.0%42.9%0.89×
2026-09-048.3%36.0%1.79×
2026-09-118.3%33.8%0.76×
2026-09-180.0%0.0%0.66×
2026-09-250.0%0.0%1.19×

Does support survive a longer view?

Advancing-week volume share against price return and closing pressure.

4 weeks0%up-week volume0.0%price return0.0%pressure
13 weeks60%up-week volume23.1%price return49.0%pressure
26 weeks57%up-week volume35.9%price return38.0%pressure
52 weeks52%up-week volume28.2%price return45.3%pressure

A high advancing-volume share alongside weak closing pressure can mean price rose between closes but finished low within its weekly ranges. The two measures answer different questions.

Effort and result

0% price efficiency

Four-week net price movement as a share of the total close-to-close path. Lower readings indicate more back-and-forth movement, regardless of volume.

Latest close: 50% of the way from the weekly low to high.

Volume-weighted return tilt

0.10 percentage points

The volume-weighted average weekly return minus the ordinary average over thirteen weeks. Positive means more volume coincided with stronger returns; negative means volume leaned toward weaker returns.

An association within this listing, not measured capital flow.

Constructive confirmation

30.1 / 100

Price direction15.0 / 30
Closing pressure0.0 / 30
Up-week volume15.1 / 25
Volume confirmation0.0 / 15

Fixed weights favour supported advances. A low score can still contain useful bearish or reversal research.

Test the volume contribution

Did heavier trading change what followed?

Compare high-volume and ordinary-volume weeks with the same price direction.

High volume is at least 1.5× its preceding 26-week median; ordinary volume is 0.75–1.25×. Returns start at that week’s close. Each group uses non-overlapping completed outcomes.

Starting observationAfterHigh-volume examplesMedian returnOrdinary examplesMedian returnDifference
Advancing weeks4 weeks280.0%11-0.4%0.4 points
Advancing weeks13 weeks16-5.4%93.6%-9.0 points
Declining weeks4 weeks31—6—Limited sample
Declining weeks13 weeks17—5—Limited sample

At least eight completed examples in both groups are required. Groups may overlap each other, and differ in volatility, trend and market conditions; their difference is not a causal volume effect or a statistical claim of edge. Up to six years of available history; price returns exclude dividends, costs and execution. Fixed definitions have not been validated out of sample.

Inspect the dated observations

Advancing weeks · 4 weeks

Volume groupObservationOutcome dateReturn
High volume2021-04-302021-05-28-5.6%
High volume2021-07-092021-08-0613.0%
High volume2021-08-062021-09-030.0%
High volume2021-09-102021-10-08-9.8%
High volume2021-11-192021-12-17-2.6%
High volume2022-02-042022-03-04-1.7%
High volume2022-03-182022-04-150.5%
High volume2022-08-052022-09-02-3.7%
High volume2022-10-072022-11-04-21.1%
High volume2022-11-112022-12-09-5.2%
High volume2023-03-242023-04-210.0%
High volume2023-05-052023-06-02-20.7%
High volume2023-07-212023-08-180.0%
High volume2023-11-032023-12-0112.4%
High volume2023-12-012023-12-294.5%
High volume2024-02-092024-03-083.5%
High volume2024-04-122024-05-10-17.3%
High volume2024-06-072024-07-05-1.7%
High volume2024-07-192024-08-1611.1%
High volume2024-10-042024-11-010.0%
High volume2025-01-102025-02-070.8%
High volume2025-05-162025-06-130.0%
High volume2025-09-192025-10-170.0%
High volume2025-10-242025-11-21-3.2%
High volume2026-04-032026-05-017.6%
High volume2026-05-152026-06-1216.6%
High volume2026-07-102026-08-0712.9%
High volume2026-08-212026-09-180.0%
Ordinary volume2021-04-162021-05-145.2%
Ordinary volume2021-07-302021-08-279.3%
Ordinary volume2021-11-122021-12-10-0.4%
Ordinary volume2022-04-082022-05-06-15.0%
Ordinary volume2022-07-012022-07-29-2.7%
Ordinary volume2022-12-022022-12-300.0%
Ordinary volume2023-12-222024-01-19-1.0%
Ordinary volume2025-11-142025-12-12-1.2%
Ordinary volume2026-02-272026-03-27-0.1%
Ordinary volume2026-05-292026-06-26-2.5%
Ordinary volume2026-08-072026-09-048.3%

Advancing weeks · 13 weeks

Volume groupObservationOutcome dateReturn
High volume2021-04-302021-07-3010.4%
High volume2021-08-062021-11-05-5.6%
High volume2021-11-192022-02-18-17.0%
High volume2022-02-252022-05-27-21.8%
High volume2022-08-052022-11-04-34.1%
High volume2022-11-112023-02-10-5.2%
High volume2023-03-242023-06-23-20.0%
High volume2023-07-212023-10-20-18.1%
High volume2023-11-032024-02-0216.2%
High volume2024-02-092024-05-10-12.8%
High volume2024-06-072024-09-0613.3%
High volume2024-10-042025-01-03-2.8%
High volume2025-01-102025-04-11-33.9%
High volume2025-05-162025-08-15-1.2%
High volume2025-09-192025-12-199.1%
High volume2026-04-032026-07-036.6%
Ordinary volume2021-04-162021-07-1612.4%
Ordinary volume2021-07-302021-10-294.6%
Ordinary volume2021-11-122022-02-11-12.6%
Ordinary volume2022-04-082022-07-08-16.2%
Ordinary volume2022-12-022023-03-030.0%
Ordinary volume2023-12-222024-03-223.6%
Ordinary volume2025-11-142026-02-13-18.2%
Ordinary volume2026-02-272026-05-2913.1%
Ordinary volume2026-05-292026-08-2820.0%

Declining weeks · 4 weeks

Volume groupObservationOutcome dateReturn
High volume2021-06-112021-07-0916.5%
High volume2021-09-172021-10-15-6.4%
High volume2021-11-052021-12-034.1%
High volume2021-12-032021-12-31-3.6%
High volume2022-01-072022-02-04-7.8%
High volume2022-03-042022-04-01-4.5%
High volume2022-04-222022-05-20-6.2%
High volume2022-07-222022-08-197.1%
High volume2022-09-232022-10-21-8.3%
High volume2022-10-212022-11-181.9%
High volume2022-11-182022-12-163.5%
High volume2023-05-122023-06-09-0.8%
High volume2023-09-222023-10-20-15.1%
High volume2023-10-202023-11-17-5.4%
High volume2023-12-082024-01-053.8%
High volume2024-01-052024-02-020.0%
High volume2024-02-232024-03-22-1.7%
High volume2024-04-192024-05-170.0%
High volume2024-06-142024-07-120.0%
High volume2024-09-132024-10-112.5%
High volume2024-12-202025-01-174.7%
High volume2025-02-072025-03-07-22.7%
High volume2025-03-072025-04-04-9.0%
High volume2025-04-112025-05-094.1%
High volume2025-07-252025-08-220.0%
High volume2025-10-312025-11-282.5%
High volume2026-02-062026-03-06-4.4%
High volume2026-03-132026-04-103.2%
High volume2026-04-102026-05-08-7.8%
High volume2026-05-082026-06-0519.0%
High volume2026-06-262026-07-244.4%
Ordinary volume2021-10-222021-11-195.5%
Ordinary volume2022-02-182022-03-18-8.2%
Ordinary volume2022-04-152022-05-13-14.3%
Ordinary volume2022-06-172022-07-157.1%
Ordinary volume2025-04-042025-05-02-3.1%
Ordinary volume2025-11-212025-12-190.0%

Declining weeks · 13 weeks

Volume groupObservationOutcome dateReturn
High volume2021-06-112021-09-1041.2%
High volume2021-09-172021-12-17-4.9%
High volume2021-12-242022-03-25-20.9%
High volume2022-04-222022-07-22-10.0%
High volume2022-07-222022-10-21-20.7%
High volume2022-10-212023-01-205.4%
High volume2023-05-122023-08-113.7%
High volume2023-09-222023-12-22-14.2%
High volume2024-01-052024-04-054.7%
High volume2024-04-192024-07-195.1%
High volume2024-09-132024-12-133.2%
High volume2024-12-202025-03-21-18.4%
High volume2025-04-112025-07-1114.4%
High volume2025-07-252025-10-2430.0%
High volume2025-10-312026-01-303.2%
High volume2026-02-062026-05-08-13.4%
High volume2026-05-082026-08-0731.9%
Ordinary volume2021-10-222022-01-21-20.0%
Ordinary volume2022-02-182022-05-20-21.0%
Ordinary volume2022-06-172022-09-1611.6%
Ordinary volume2025-04-042025-07-043.3%
Ordinary volume2025-11-212026-02-20-15.7%

Price, activity and volume balance

Where volume is concentrated

2026-09-25Close 365.08
Weekly priceEstimated volume at priceMost active priceEarlier activity areaEstimated volume balance

Move over the chart, tap a week, or use the arrow keys to inspect it. The profile estimates where volume sits within weekly price ranges. The lower chart accumulates volume weighted by where each week closed in its range; its starting point changes with the selected period. This is not trade-based CVD.

Most active price293.09
Earlier activity area259.61 – 314.86
Recent volume balance0.0%
Recent weekly volume1.21×
View chart values
Completed weekly observations
Week endingCloseVolume
2025-10-03284.8882
2025-10-10284.8890
2025-10-17284.8887
2025-10-24321.12456
2025-10-31303.15427
2025-11-07305.402274
2025-11-14314.40189
2025-11-21310.70172
2025-11-28310.70159
2025-12-05310.70124
2025-12-12310.7071
2025-12-19310.7076
2025-12-26310.7028
2026-01-02310.7019
2026-01-09310.7035
2026-01-16310.7063
2026-01-23312.7566
2026-01-30312.7520
2026-02-06295.051944
2026-02-13257.0569
2026-02-20261.8369
2026-02-27268.88112
2026-03-06281.9555
2026-03-13268.55450
2026-03-20268.5514
2026-03-27268.5558
2026-04-03278.25173
2026-04-10277.00132
2026-04-17277.0034
2026-04-24299.45119
2026-05-01299.45664
2026-05-08255.541402
2026-05-15260.903980
2026-05-22267.43157
2026-05-29304.1585
2026-06-05304.1552
2026-06-12304.15135
2026-06-19304.1521
2026-06-26296.491031
2026-07-03296.4963
2026-07-10298.50869
2026-07-17309.37133
2026-07-24309.3741
2026-07-31309.3782
2026-08-07337.00117
2026-08-14337.0057
2026-08-21365.08210
2026-08-28365.08105
2026-09-04365.08211
2026-09-11365.0895
2026-09-18365.0878
2026-09-25365.08140

Earlier and recent activity

What has changed?

The recent comparison uses the last four completed weeks.

Activity centre

Higher

The recent centre moved +26.94% against the earlier part of this period.

Price and volume

No clear disagreement

Price changed +0.00% over four weeks. Volume balance is +0.0% on a scale from −100% to +100%.

Volume and price movement

Recent volume is close to its earlier norm

Recent median weekly volume is 1.21× the earlier median. This describes price response, not the identity of buyers or sellers.

Recent closes

4 of 4 closes above

Price was above the earlier area before these four weeks. The earlier boundaries stay fixed for this comparison.

Activity over time

Darker cells show more estimated volume at that price. Use the chart to see where activity has moved. For longer periods, a column combines several weeks.

Volume and price movement

Each dot is a week. Compare weekly volume with the move from open to close.

What to check next

Holding outside the area

Further closes above the earlier area would show that price is staying outside it. Compare them with the direction of recent volume balance.

Returning inside

A close back inside the earlier area would weaken the move outside it. Check whether the return lasts more than one week.

Price and volume disagreeing

There is no clear disagreement at present. Check whether volume balance continues to support any further price move.

Same stock · Earlier observations

Previous examples

Descriptive history, not a forecast.

Comparisons use the same period length, position relative to the earlier activity area and direction of recent volume balance. Outcomes do not overlap for each following period. At least five examples are needed to show a matched median. The median is the middle result; the all-period median includes earlier periods regardless of their volume reading.

Subsequent price changes
AfterExamplesMedian changeSample
4 weeks54.35Available
13 weeks2—Too few examples

Returns are close-to-close price changes. Interim lows show the lowest price reached during the period. Dividends, fees and trade execution are not included. The available history contains up to six years of weekly observations.

Connected research

Test the same listing from another angle

How to read this report

Choose the period

The selected period sets the profile and volume balance starting point. “Start from a date” uses the first available week on or after that date. At least 13 consecutive weeks are required.

Compare earlier activity

The earlier activity area contains most of the estimated volume before the last four weeks. The activity centre is the average estimated price, weighted by volume. Compare subsequent closes with its boundaries, then read the volume balance alongside the price move.

Check the data

Volume is reported for the whole week. The distribution within the range and the direction of pressure are estimates. They cannot identify individual trades, investor holdings or institutional buying.

Reports use saved weekly data and refresh when those records change. Missing or invalid weeks restrict the available periods.

BIO-B · Volume & Price

Evidence context