Beyond the Spreadsheet
We take your Excel financial models and convert them into a proprietary computational structure, preserving your model's logic while unlocking an entirely new class of analysis that no spreadsheet can support.
The Divide
Mathematics and technology have transformed finance.
But not for everyone.
For the first time, fundamental investors have the analytical tools of a quant fund. The insights were always in your models.
Now you can see them.
The Structural Problem
The Competition
Every other platform reads your spreadsheet and wraps a cleaner interface around it. Many add AI that lets you chat with it, ask questions, or generate charts on top of your data.
Some build AI models that query or generate analysis from your Excel data. But all of it operates on the same underlying spreadsheet — same rows, same columns, same computational limits.
The Conversion
Spangler Proprietary Computational StructureWe convert your Excel models into a computational structure that is no longer bound by spreadsheet constraints, enabling a new class of analysis that Excel can never support.
What This Unlocks
Automatically surface insights your models have always contained — which assumptions drive your returns, where your model is fragile — without you having to ask.
Any analysis your team runs manually today can be encoded as an algorithm that runs across every model instantly, without rebuilding anything in Excel.
Because every model is now in a single computational database, you can analyze patterns, benchmark assumptions, and draw insights across your entire library of models — not just one deal at a time.
Paper maps had every street. Google turned them into a computational object, unlocking insights like shortest path that were impossible before. We do the same for financial models.
Why Spangler
Upload any Excel model and understand it completely, instantly. Spangler maps every formula and dependency, surfaces the key drivers and their downstream outputs, and flags structural flaws no manual review would catch. You get a Model Intelligence Report covering everything that matters about your model, so you can make informed judgements in minutes rather than spending days tracing through it yourself.
Most risk analysis stops at sensitivity tables. Spangler goes further. Understand the risk profile of every driver, how they interact with each other, how your model behaves across different economic regimes, and precisely where it breaks against your constraints. Run thousands of simulations with full control over your unknowns. Drawing on mathematics from topology, information theory, and beyond, Spangler surfaces the risk picture your model always contained but that you could never fully see.
Spangler is also an alternative data provider. Every input in your model can be connected to curated sources of alternative data, from satellite imagery and transaction data to proprietary benchmarks and sector-specific signals. Replace assumptions built on gut feel with ones grounded in the best available evidence. The result is a model that does not just run faster, it starts from a more defensible place.
Compare assumptions, structures, and outcomes across every model your firm has ever built. Spot inconsistencies between deals. Identify patterns across your portfolio. Turn your firm's accumulated modeling experience into a compounding analytical advantage.
The Platform
Everything you built in Excel, every formula and every dependency, now lives inside a structure purpose-built for the analysis that spreadsheets were never designed to do.
Built by Practitioners
Spangler was built by investment professionals who spent years doing the work and knew there had to be a better way.
Professional Experience
Education
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