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BillionToOne, Inc. Class A

Stage 3 · Topping · week 8

As of Oct 22, 2026, BillionToOne is in Stage 3, the topping phase, now in week 8 (since Sep 2, 2026). It closed at $105.68, above its 200-day average, which is rising.

BillionToOne, Inc., a precision diagnostics company, quantifies biology to create molecular diagnostics. More about the company

$105.68
+0.96% today
$5.0B · Mid cap
Market Neutral — Building

Pro read

Pro

Our read

Topping: the uptrend is tiring

Setup score

—

Momentum

Steady

Edge

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Loading price chart…
Stage Cycle Timeline2025-11-06 → 2026-10-22
S? 42w
S3 7w
2025-11-062026-10-22
S1S2S3S4Setup score (0–10, dashed line at 5)
S? 42w → S2 1w → S3 7w current
Total tracked: 50 weeks across 3 stage runs.

BLLN among Diagnostics & Research44th of 44 by relative strength

All 44 →
Stocks in Diagnostics & Research ranked by relative strength, with stage and one-month change
#StockStageRS1M
1CDNAStage 2 · wk 2499+27.3%
2BDSXStage 2 · wk 1898−18.3%
3ILMNStage 2 · wk 2497+5.5%
4GHStage 2 · wk 2197−7.6%
5NTRAStage 2 · wk 2096+2.7%
6CRLStage 2 · wk 1692+22.5%
7RVTYStage 2 · wk 1890+10.7%
8PSNLStage 2 · wk 1790−3.2%
…44BLLNStage 3 · wk 8—−7.6%
vs 52W High
—
The stock is rolling over from its 52-week high. In Stage 3 distribution, new long positions carry high risk.
Stage Maturity
Week 8
1w13w26w
Week 8, distribution
How long this stock has been in Stage 3 distribution. Longer tops often precede deeper Stage 4 declines.
vs 200 DMA
10.3%
200 DMA: $95.83 · rising
Stock is losing its 200 DMA. Once lost, it confirms Stage 4 risk. This is a major red flag for existing holders.
Rel Volume
0.64x
vs 50-day avg
Volume spikes on down days during Stage 3 signal distribution, with institutions exiting. Stage analysis reads that as a warning against new long positions.
Trend Health
↓
Short-term trend rolling over
Two reads of momentum. The arrow shows the direction of the short-term trend: rising (↑ or ↗), flat (→) or rolling over (↓). The ⇈ mark appears when our trend model reads the move as gaining speed on top of the longer trend. Strongest when both agree.
1M
-7.6%
3M
-16.2%
6M
+25.9%
YTD
+18.4%
1Y
—
Scan Membership
Not in any current scan.
Recent Stage Timeline
2026-10-22S3
Wk 8 · Vol 0.64x
2026-10-21S3
Wk 7 · Vol 0.63x
2026-10-20S3
Wk 7 · Vol 0.66x
2026-10-19S3
Wk 7 · Vol 0.74x
2026-10-16S3
Wk 7 · Vol 0.88x
2026-10-15S3
Wk 7 · Vol 0.61x
2026-10-14S3
Wk 6 · Vol 0.60x
2026-10-13S3
Wk 6 · Vol 0.94x
2026-10-12S3
Wk 6 · Vol 0.69x
2026-10-09S3
Wk 6 · Vol 0.46x
2026-10-08S3
Wk 6 · Vol 0.54x
2026-10-07S3
Wk 5 · Vol 0.95x
Moving averages & range
50 DMA
$101.42
200 DMA
$95.83
52W High
—
52W Low
—
5D Low
$98.12
Resistance levels (recent highs)
20d High
$123.08
60d High
$149.97
120d High
$149.97
250d High
—
Next resistance
+16.5%
to 20d High
P/E (TTM)
167.7
Forward 71.2
ROE
+10.7%
Profit margin +8.3%
Dividend Yield
0.00%
P/B 9.2

BillionToOne: quick answers

What stage is BillionToOne in?

As of Oct 22, 2026, BillionToOne (BLLN) is in Stage 3, the topping phase. It entered Stage 3 on Sep 2, 2026 and is in week 8. What the four stages mean

Is BillionToOne in an uptrend?

Its uptrend has stalled. BillionToOne is in Stage 3, the topping phase that follows an advance. It trades 10.3% above its 200-day average, which is rising.

How has BillionToOne performed over the past year?

As of Oct 22, 2026, BillionToOne is up 18.4% so far in 2026.

Which sector and industry is BillionToOne in?

BillionToOne is in the Diagnostics & Research industry, part of the Health Care sector.

About this companyHealth Care· Diagnostics & Research

BillionToOne, Inc., a precision diagnostics company, quantifies biology to create molecular diagnostics. The company provides molecular counting platform, which is designed to detect and measure DNA molecules at the single-count level to help enhance disease detection. It also offers UNITY Complete, a non-invasive prenatal screen that assesses fetal risk for aneuploidies, recessive conditions, and fetal antigens from a maternal blood draw; Northstar Select, a liquid biopsy test that provides a list of mutations that are present in the tumor and types of mutations detected that include deletions, insertions, and point mutations; and Northstar Response, a methylation-based assay that quantifies the amount of cancer at the single molecule level without requiring a tissue biopsy, enabling real-time monitoring of patient response to therapy with unprecedented precision. BillionToOne, Inc. was incorporated in 2016 and is headquartered in Menlo Park, California.

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All analytics based on EOD data. Data as of 2026-10-22. Past data patterns are not indicative of future results. This page is a data analytics tool only.