Is PLXS or REFR more undervalued in 2026?

CirclFi compares Plexus Corp. (PLXS) and Research Frontiers Incorporated (REFR) using 13 institutional-grade valuation models. PLXS has a Quality of Company score of 9.2/10 while REFR scores 5.7/10.

Which is a better buy — PLXS or REFR?

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 PLXS and REFR valuations compare?

PLXS at $267.89 and REFR at $0.76 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

PLXS vs REFR Valuation Comparison 2026 — Intrinsic Value Analysis

PLXS

Electronic Components

Plexus Corp.

Quality

9.2

out of 10

Value Trap

SAFE

Price

$267.89

Last close

Models

13/13

Active

REFR

Electronic Components

Research Frontiers Incorporated

Quality

5.7

out of 10

Value Trap

SAFE

Price

$0.76

Last close

Models

8/13

Active

Model-by-Model Comparison

Model	Type	PLXS Fair Value	PLXS Upside	REFR Fair Value	REFR Upside
Bayesian DCF	Intrinsic	$48.25	-82.0%	$0.21	-72.2%
Earnings Power Value	Intrinsic	$74.01	-72.4%	—	—
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$26.53	-90.1%	$0.18	-76.1%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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PLXS vs REFR — Which Stock Is More Undervalued?

PLXS scores higher with a 9.2/10 quality rating vs REFR's 5.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Plexus Corp. (PLXS) and Research Frontiers Incorporated (REFR) 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.

PLXS currently trades at $267.89 with a QOC of 9.2/10, while REFR trades at $0.76 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).