NPKI vs ROCK

NPK International Inc. vs Gibraltar Industries, Inc. — Valuation Comparison 2026

By CirclFi Research Team · Updated 2026-06-03 · Data from SEC EDGAR, FRED & GDELT

Quick Summary — NPKI scores higher on quality with 8.0/10 vs ROCK's 8.0/10. NPKI trades at $14.59 while ROCK trades at $38.03. Both analyzed daily using SEC EDGAR data across 13 institutional models.

NPKI

Building Products & Equipment
NPK International Inc.
Quality
8.0
out of 10
Value Trap
19
SAFE
Price
$14.59
Last close
Models
13/13
Active
VS

ROCK

Building Products & Equipment
Gibraltar Industries, Inc.
Quality
8.0
out of 10
Value Trap
12
SAFE
Price
$38.03
Last close
Models
13/13
Active
NPKI
2 models active
Limited to 2/13 visible models
ROCK
2 models active
Limited to 2/13 visible models

NPKI vs ROCK — Fair Value Comparison

NPKI
$0$6$11$17 Price$14.59 Bayesian …$3.29 (-77.5%) Earnings …$1.96 (-86.5%)
ROCK
$0$15$30$45 Price$38.03 Bayesian …$13.55 (-63.6%) Earnings …$15.03 (-60.5%)
Market Price Model 1 Model 2

Model-by-Model Comparison

ModelType NPKI Fair ValueNPKI Upside ROCK Fair ValueROCK Upside
Bayesian DCF Intrinsic $3.29 -77.5% $13.55 -63.6%
Earnings Power Value Intrinsic $1.96 -86.5% $15.03 -60.5%
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 $•••.•• ••.•% $•••.•• ••.•%

NPKI vs ROCK — Which Stock Is More Undervalued in 2026?

NPKI scores higher with a 8.0/10 quality rating vs ROCK's 8.0/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

How Do NPKI and ROCK Valuations Compare?

At $14.59, NPKI trades +77.5% above its Bayesian DCF fair value of $3.29, while ROCK at $38.03 trades +63.6% above its estimate of $13.55. NPKI shows a wider gap between price and intrinsic value.

Quality of Company: NPKI vs ROCK

NPKI earns a Quality of Company score of 8.0/10 compared to ROCK's 8.0/10. The scores are closely matched, indicating similar fundamental quality profiles. The QOC score synthesizes 32 signals spanning profitability margins, revenue growth, free cash flow, capital allocation, and leverage.

Value Trap Risk: NPKI vs ROCK

NPKI carries a SAFE value trap risk (19/100) while ROCK shows SAFE risk (12/100). Both companies show manageable value trap risk, suggesting their current valuations are not artificially depressed by fundamental deterioration.

Both in Building Products & Equipment

Both NPKI and ROCK operate in Building Products & Equipment, which has 36 stocks tracked by CirclFi. Same-industry comparisons provide the most direct insight into relative valuation since both companies face similar regulatory environments, market dynamics, and competitive pressures. 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), and ensemble methods (CUCE).

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