Is GSK or MRK more undervalued in 2026?

CirclFi compares GSK plc (GSK) and Merck & Company, Inc. (MRK) using 13 institutional-grade valuation models. GSK has a Quality of Company score of 8.7/10 while MRK scores 9.8/10.

Which is a better buy — GSK or MRK?

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 GSK and MRK valuations compare?

GSK at $51.24 and MRK at $119.89 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

GSK vs MRK Valuation Comparison 2026 — Intrinsic Value Analysis

GSK

Drug Manufacturers - General

GSK plc

Quality

8.7

out of 10

Value Trap

SAFE

Price

$51.24

Last close

Models

12/13

Active

MRK

Drug Manufacturers - General

Merck & Company, Inc.

Quality

9.8

out of 10

Value Trap

—

Price

$119.89

Last close

Models

13/13

Active

Model-by-Model Comparison

Model	Type	GSK Fair Value	GSK Upside	MRK Fair Value	MRK Upside
Bayesian DCF	Intrinsic	$43.38	-15.3%	$45.62	-61.9%
Earnings Power Value	Intrinsic	$56.39	+10.0%	$17.85	-85.1%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$•••.••	••.•%	$•••.••	••.•%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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GSK vs MRK — Which Stock Is More Undervalued?

MRK scores higher with a 9.8/10 quality rating vs GSK's 8.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing GSK plc (GSK) and Merck & Company, Inc. (MRK) 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.

GSK currently trades at $51.24 with a QOC of 8.7/10, while MRK trades at $119.89 with a QOC of 9.8/10.

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).