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BillionToOne (BLLN, Health Care Services) Stock Valuation & Fair Value Fairly valued

BillionToOne (BLLN, Health Care Services) trades at a blended P/E of 173.1, about 70% below its historical normal valuation, with a forward growth estimate of 59.7% and a PEG of 2.90. Priced at its historical normal P/E of 584.6 on the same blended earnings, the 2026-09-18 close of $105.92 corresponds to about $358 a share. This is a valuation reference, not a price target.

DATA AS OF 2026-09-21
Blended P/E
173.1
Normal P/E
584.6
PEG
2.90
Fwd growth
59.7%
Div yield
0.0%
RSI (14)
62.5
Neutral

The Street vs SeerForecast

Wall Street's mean price target for BLLN is $119.75 across 8 analysts, 4.7% above the current price. Our SeerForecast read of the same stock, formed without analyst targets: fairly valued. When the two disagree, start your digging there.

Valuation flags

Verdict history

tickerseer's rating moved from trading above fair value (2026-07-31) to fairly valued (2026-09-21).

Blended P/E and rating by weekBlended P/E moved from 227.3 to 173.1 between 2026-07-31 and 2026-09-21, against a normal P/E of 584.6, with 3 rating changes over 18 recorded weeks.2026-07-31: P/E 227.3, Trading above fair value (recalculated)2026-08-03: P/E 224.9, Trading above fair value2026-08-07: P/E 224.9, Trading above fair value (recalculated)2026-08-10: P/E 176.2, Quality business with a solid forward outlook2026-08-14: P/E 176.2, Quality business with a solid forward outlook (recalculated)2026-08-17: P/E 227.3, Trading above fair value2026-08-21: P/E 227.3, Trading above fair value (recalculated)2026-08-24: P/E 171.2, Fairly valued2026-08-27: P/E 171.2, Fairly valued (recalculated)2026-08-28: P/E 171.2, Fairly valued (recalculated)2026-08-30: P/E 171.2, Fairly valued (recalculated)2026-08-31: P/E 164.3, Fairly valued2026-09-05: P/E 164.3, Fairly valued (recalculated)2026-09-07: P/E 171.4, Fairly valued2026-09-12: P/E 171.4, Fairly valued (recalculated)2026-09-14: P/E 164.8, Fairly valued2026-09-19: P/E 164.8, Fairly valued (recalculated)2026-09-21: P/E 173.1, Fairly valued200.0400.0Jul 31Aug 13Aug 26Sep 8Sep 21Normal P/E 584.6
Attractively valuedFairly valuedAbove fair valueLarger dot: a stronger reading

Not every point was recorded live. Points marked recalculated apply today's valuation rules to the metrics tickerseer archived that week.

Selected weeks: the first, the latest, every week the rating moved, and the cheapest and dearest.

WeekBlended P/EPremium to normal P/ERating
2026-07-31P/E 227.3-61%Trading above fair value
2026-08-10P/E 176.2-70%Quality business with a solid forward outlook
2026-08-17P/E 227.3-61%Trading above fair value
2026-08-24P/E 171.2-71%Fairly valued
2026-08-31P/E 164.3-72%Fairly valued
2026-09-21P/E 173.1-70%Fairly valued ← now

Frequently asked questions

Is BillionToOne stock overvalued?

At a blended P/E of 173.1 versus its historical normal P/E of 584.6, BillionToOne trades about 70% below its typical valuation, with a PEG of 2.90 on 59.7% forward growth. tickerseer currently rates it fairly valued.

What is BillionToOne's fair value and PEG?

BillionToOne trades at a blended P/E of 173.1 against a historical normal P/E of 584.6, a PEG of 2.90, and a forward growth estimate of 59.7%. Priced at its historical normal P/E of 584.6 on the same blended earnings, the 2026-09-18 close of $105.92 corresponds to about $358 a share. This is a valuation reference, not a price target.

Has tickerseer's rating of BillionToOne changed?

tickerseer's rating moved from trading above fair value (2026-07-31) to fairly valued (2026-09-21).

What is the analyst price target for BillionToOne?

The mean Wall Street price target for BillionToOne is $119.75 across 8 analysts, 4.7% above the current price. tickerseer's SeerForecast verdict is formed independently of analyst targets.

Industry: Health Care Services. Create a free account to see the full analysis: the SeerAI score, its five quality sub-scores, valuation history, and the AI research note. Options setups and metric history are part of the paid plans.

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