December 2025

The First Harvest

Monthly return: +1.11%

Dear Investors,

For two decades, I have been building large-scale software systems. Healthcare platforms, enterprise automation, AI-powered tools that processed millions of transactions. In software, a system either works or it does not. You build it, you test it, you monitor it, and you let the machine do what machines do best: execute without emotion.

About fifteen years ago, I discovered value investing. The people who shaped my thinking about capital allocation (Mohnish Pabrai, Guy Spier, the Buffett-Munger canon) taught me to look for businesses with durable competitive advantages, honest management, and prices that offer a margin of safety. That framework remains the foundation of everything we do at Workflow Capital.

When I entered the investing world, I noticed something. Everyone was doing the same thing: reading 10-Ks, analyzing balance sheets, running the standard playbook. What was my edge in that? It struck me that Warren Buffett's edge in his early days came partly from Value Line, a technological advantage at the time. They had access to data in their own way, and abilities to interpret such data and make informed decisions. In the same way, I realized I had a different technology at my disposal, and a technical background to use it.

My edge was systems thinking.

Through this process, I discovered options as a systematic tool. I developed a method for combining options strategies with baskets of high-quality companies, categorized across multiple tiers based on quality and conviction. The workflow that emerged is the result of combining both worlds: the value investor's judgment with the engineer's discipline.

The result is Workflow Capital.

The Farmer's Logic

We sell insurance on businesses we would be happy to own. That is the entire strategy, distilled to one sentence. Every put option we write is a contract that says: if this stock falls to a price we consider attractive, we will buy it. In exchange for that commitment, we collect a premium today.

The businesses we underwrite are the same ones any value investor would recognize: durable competitive advantages, honest management, strong balance sheets. We would own them gladly at the right price. The market just happens to be asking more than we want to pay. So instead of waiting with cash earning nothing, we get paid to wait.

A farmer does not agonize over whether next Tuesday will rain. He plants in good soil, tends the crop, and accepts that some seasons are better than others. Our soil is the quality of the businesses we underwrite. December was our first planting season.

The Numbers

We executed 19 trades in December. 18 of them expired profitably. One was closed early at a small loss when the thesis changed. That is a 95% win rate, and while I want to be careful about reading too much into a single month, the result came from selection. Every one of those 19 trades passed through a four-layer quality filter that examines financial health, momentum, and fundamental quality before a single dollar is risked.

The positions spanned technology, specialty chemicals, and consumer sectors. All were cash-secured puts on companies we would be comfortable owning, companies that would pass muster with any value investor. The monthly return was +1.11%.

I will not pretend that 1.11% sounds exciting. It does not. But compounded monthly, that pace produces roughly 14% annualized. And it was achieved in a partial month, with conservative position sizing, on a brand-new system with training wheels still on. More importantly, it was achieved with a maximum drawdown of essentially nothing. We knew our worst case at all times, and the worst case never came close to materializing.

The Infrastructure

What I am most proud of this month is the system underneath the return. Before a single trade was placed, we built: a multi-gate execution protocol that validates every order before submission. A quality filter that screens hundreds of stocks down to a handful of candidates. Safety controls that physically prevent the system from placing market orders, taking on leverage, or exceeding position limits.

A decade ago, the decision-maker and the executor were the same person: me. A human who gets excited, gets scared, and occasionally convinces himself that this trade is special. Now the decision-maker is still me, drawing on the same value principles I have always followed. The executor is a machine. I choose the strategy. The machine enforces the discipline. Pabrai often says the key to investing is to not be stupid. The machine makes it much harder to be stupid.

What Comes Next

December was proof of concept. The system works. The infrastructure holds. The thesis (that volatility is systematically mispriced and can be harvested by patient, disciplined sellers who understand the businesses underneath) produced its first small crop.

In January, we will scale. More positions, wider diversification, and the first real test of how the system behaves under higher volume. I expect mistakes. I welcome them. Every mistake the system catches is a mistake I would have made on gut instinct a decade ago.

The goal is to build a machine that is right often enough, manages risk always, and compounds quietly while we sleep.

Thank you for your trust. We are just getting started.

Carlos Taborda Jaraba

Founder & Portfolio Manager

Workflow Capital