Is SIF or TDG more undervalued in 2026?

CirclFi compares SIFCO Industries, Inc. (SIF) and Transdigm Group Incorporated (TDG) using 13 institutional-grade valuation models. SIF has a Quality of Company score of 7.7/10 while TDG scores 9.5/10.

Which is a better buy — SIF or TDG?

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 SIF and TDG valuations compare?

SIF at $21.45 and TDG at $1265.06 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

SIF vs TDG Valuation Comparison 2026 — Intrinsic Value Analysis

SIF

Aerospace & Defense

SIFCO Industries, Inc.

Quality

7.7

out of 10

Value Trap

SAFE

Price

$21.45

Last close

Models

12/13

Active

TDG

Aerospace & Defense

Transdigm Group Incorporated

Quality

9.5

out of 10

Value Trap

SAFE

Price

$1265.06

Last close

Models

11/13

Active

Model-by-Model Comparison

Model	Type	SIF Fair Value	SIF Upside	TDG Fair Value	TDG Upside
Bayesian DCF	Intrinsic	$16.74	-21.9%	$27.03	-97.8%
Earnings Power Value	Intrinsic	$12.99	-39.5%	—	—
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$28.66	+33.6%	$512.43	-59.5%
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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SIF vs TDG — Which Stock Is More Undervalued?

TDG scores higher with a 9.5/10 quality rating vs SIF's 7.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing SIFCO Industries, Inc. (SIF) and Transdigm Group Incorporated (TDG) 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.

SIF currently trades at $21.45 with a QOC of 7.7/10, while TDG trades at $1265.06 with a QOC of 9.5/10.

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).