Is SPXX or STT more undervalued in 2026?

CirclFi compares Nuveen S&P 500 Dynamic Overwrit (SPXX) and State Street Corporation (STT) using 13 institutional-grade valuation models. SPXX has a Quality of Company score of 1.7/10 while STT scores 7.8/10.

Which is a better buy — SPXX or STT?

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 SPXX and STT valuations compare?

SPXX at $18.34 and STT at $157.61 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

SPXX vs STT Valuation Comparison 2026 — Intrinsic Value Analysis

SPXX

Asset Management

Nuveen S&P 500 Dynamic Overwrit

Quality

1.7

out of 10

Value Trap

—

Price

$18.34

Last close

Models

9/13

Active

STT

Asset Management

State Street Corporation

Quality

7.8

out of 10

Value Trap

SAFE

Price

$157.61

Last close

Models

11/13

Active

Model-by-Model Comparison

Model	Type	SPXX Fair Value	SPXX Upside	STT Fair Value	STT Upside
Bayesian DCF	Intrinsic	$4.86	-73.5%	$202.85	+28.7%
Earnings Power Value	Intrinsic	—	—	$100.75	-36.1%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$29.36	+65.9%	$840.71	+433.4%
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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SPXX vs STT — Which Stock Is More Undervalued?

STT scores higher with a 7.8/10 quality rating vs SPXX's 1.7/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Nuveen S&P 500 Dynamic Overwrit (SPXX) and State Street Corporation (STT) 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.

SPXX currently trades at $18.34 with a QOC of 1.7/10, while STT trades at $157.61 with a QOC of 7.8/10.

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).