Is PRTA or PTN more undervalued in 2026?

CirclFi compares Prothena Corporation plc (PRTA) and Palatin Technologies, Inc. Common Stock (PTN) using 13 institutional-grade valuation models. PRTA has a Quality of Company score of 6.8/10 while PTN scores 5.7/10.

Which is a better buy — PRTA or PTN?

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 PRTA and PTN valuations compare?

PRTA at $10.18 and PTN at $14.02 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

PRTA vs PTN Valuation Comparison 2026 — Intrinsic Value Analysis

PRTA

Pharmaceutical Preparations

Prothena Corporation plc

Quality

6.8

out of 10

Value Trap

LOW

Price

$10.18

Last close

Models

11/13

Active

PTN

Pharmaceutical Preparations

Palatin Technologies, Inc. Common Stock

Quality

5.7

out of 10

Value Trap

LOW

Price

$14.02

Last close

Models

9/13

Active

Model-by-Model Comparison

Model	Type	PRTA Fair Value	PRTA Upside	PTN Fair Value	PTN Upside
Bayesian DCF	Intrinsic	$4.35	-57.3%	$5.85	-58.3%
Earnings Power Value	Intrinsic	$6.84	-35.7%	—	—
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$8.92	-12.4%	$27.14	+93.6%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%

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PRTA vs PTN — Which Stock Is More Undervalued?

PRTA scores higher with a 6.8/10 quality rating vs PTN's 5.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Prothena Corporation plc (PRTA) and Palatin Technologies, Inc. Common Stock (PTN) 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.

PRTA currently trades at $10.18 with a QOC of 6.8/10, while PTN trades at $14.02 with a QOC of 5.7/10.

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).