Is OSTX or PBYI more undervalued in 2026?

CirclFi compares OS Therapies Incorporated (OSTX) and Puma Biotechnology Inc (PBYI) using 13 institutional-grade valuation models. OSTX has a Quality of Company score of 3.1/10 while PBYI scores 8.4/10.

Which is a better buy — OSTX or PBYI?

Compare intrinsic values from 13 independent models against current market prices. CirclFi also calculates Value Trap scores. This is not financial advice — conduct your own analysis.

How do OSTX and PBYI valuations compare?

OSTX at $2.14 and PBYI at $7.17 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

OSTX vs PBYI Valuation Comparison 2026 — Intrinsic Value Analysis

OSTX

Pharmaceutical Preparations

OS Therapies Incorporated

Quality

3.1

out of 10

Value Trap

SAFE

Price

$2.14

Last close

Models

6/13

Active

PBYI

Pharmaceutical Preparations

Puma Biotechnology Inc

Quality

8.4

out of 10

Value Trap

SAFE

Price

$7.17

Last close

Models

12/13

Active

Model-by-Model Comparison

Model	Type	OSTX Fair Value	OSTX Upside	PBYI Fair Value	PBYI Upside
Bayesian DCF	Intrinsic	$0.47	-77.9%	$6.50	-9.3%
Earnings Power Value	Intrinsic	—	—	$4.28	-40.3%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$•••.••	••.•%	$•••.••	••.•%
PWERM	Option-Based	$1.95	-9.1%	$7.46	+4.1%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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OSTX vs PBYI — Which Stock Is More Undervalued?

PBYI scores higher with a 8.4/10 quality rating vs OSTX's 3.1/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing OS Therapies Incorporated (OSTX) and Puma Biotechnology Inc (PBYI) across 13 institutional-grade valuation models reveals how each company's intrinsic value stacks up against its market price. CirclFi's engine processes SEC EDGAR 10-K and 10-Q filings, FRED macroeconomic data, and GDELT news sentiment to generate independent fair value estimates daily.

OSTX currently trades at $2.14 with a QOC of 3.1/10, while PBYI trades at $7.17 with a QOC of 8.4/10.

Both companies are analyzed with models spanning intrinsic (Bayesian DCF, EPV), scenario-based (First Chicago), regime-switching (Markov DDM, RCMH-DCF), machine learning (ML-RIV, FTNN Topology), and ensemble methods (CUCE).