Is PPBT or PROK more undervalued in 2026?

CirclFi compares Purple Biotech Ltd. (PPBT) and ProKidney Corp. (PROK) using 13 institutional-grade valuation models. PPBT has a Quality of Company score of 3.6/10 while PROK scores 4.4/10.

Which is a better buy — PPBT or PROK?

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 PPBT and PROK valuations compare?

PPBT at $2.81 and PROK at $1.81 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

PPBT vs PROK Valuation Comparison 2026 — Intrinsic Value Analysis

PPBT

Biotechnology

Purple Biotech Ltd.

Quality

3.6

out of 10

Value Trap

—

Price

$2.81

Last close

Models

2/13

Active

PROK

Biotechnology

ProKidney Corp.

Quality

4.4

out of 10

Value Trap

SAFE

Price

$1.81

Last close

Models

9/13

Active

Model-by-Model Comparison

Model	Type	PPBT Fair Value	PPBT Upside	PROK Fair Value	PROK Upside
Bayesian DCF	Intrinsic	—	—	$0.67	-63.2%
EROIC Spread	Intrinsic	$1.34	-52.3%	—	—
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$0.54	-80.7%	$0.49	-75.1%
Dynamic NAV	Asset-Based	—	—	$0.78	-57.1%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%

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PPBT vs PROK — Which Stock Is More Undervalued?

PROK scores higher with a 4.4/10 quality rating vs PPBT's 3.6/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Purple Biotech Ltd. (PPBT) and ProKidney Corp. (PROK) 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.

PPBT currently trades at $2.81 with a QOC of 3.6/10, while PROK trades at $1.81 with a QOC of 4.4/10.

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).