Capitalizing Intangibles in Modern Valuation: The Eisfeldt-Papanikolaou Knowledge Framework

The Accounting Distortion in Classical Book Value

Under standard GAAP and IFRS accounting conventions, investments in physical assets (property, plant, and equipment) are capitalized onto corporate balance sheets and depreciated over their useful lives. In contrast, investments in knowledge assets—such as Research & Development (R&D)—and organizational assets—such as human capital and brand architecture contained within Selling, General, and Administrative (SG&A) expenses—are expensed immediately.

In a modern knowledge-driven economy dominated by technology, software, and healthcare enterprises, this accounting asymmetry creates severe valuation distortions. Traditional book value systematically understates the true capital stock of innovative, asset-light firms. Consequently, classical Price-to-Book (P/B) ratios mistakenly categorize productive, high-return digital businesses as egregiously expensive, causing classical value screens to avoid them entirely.

The Perpetual-Inventory Capitalization Framework

To correct this structural impairment, quantitative valuation models implement the perpetual-inventory method developed by Eisfeldt, Kim, and Papanikolaou (2020).

Under this framework, intangible capital stocks are accumulated over time and subjected to economic depreciation:

$K_{i,t} = (1 - \delta) K_{i,t-1} + I_{i,t}$

Where:

• $K_{i,t}$ represents the accumulated intangible capital stock.
• $I_{i,t}$ represents annual expenditure (separating Knowledge Capital from R&D and Organization Capital from SG&A).
• $\delta$ represents the economic depreciation rate (typically calibrated around 20% for R&D and 15% for SG&A).

Intangible-adjusted book equity is then reconstructed by adding these capitalized stocks back into reported accounting book value:

$B_{i,t}^{\text{int}} = B_{i,t}^{\text{GAAP}} + K_{i,t}^{\text{RD}} + K_{i,t}^{\text{ORG}}$

Restoring Value Factor Efficacy

Capitalizing intangibles restores the predictive efficacy of book-to-market across modern equity markets.

By replacing unadjusted book value with intangible-adjusted capital:

1. Removes Structural Industry Bias: Eliminates the automatic exclusion of technology, digital media, and biotechnology sectors from value portfolios.
2. Separates Alpha from Decaying Capital: Differentiates between companies trading at low multiples due to unmeasured intellectual capital and true value traps burdened by obsolete physical assets.
3. Enhances Cross-Sectional Spreads: Re-establishes a clean, stable valuation spread that reflects true economic invested capital.

Quantitative allocators apply intangible asset adjustments through the Parallax Value Factor Methodology and enterprise platform features to evaluate corporate valuations on genuine economic foundations.