The QuadrantSubscribe

The manifesto

Most of what passes for insight is recycled. The same frameworks, the same talking points, the same LinkedIn takes dressed up as analysis.

We got tired of it.

Why we’re doing this

Four lenses

Every piece looks through at least one of these.

TechnologyStack

The machinery underneath.

How products get built, what they run on, and why architecture is strategy. We read the stack the way analysts read a balance sheet.

Dense blue circuit board, photographed from above

Capital Structure &Investment Thesis

Who funds it, and why.

Cap tables, theses, and the cost of money. Every product decision is a financing decision wearing different clothes.

Newsprint stock tables and a folded twenty dollar bill

Strategic Planning &Management

The deliberate moves.

Positioning, sequencing, and the discipline of saying no. Strategy is what survives contact with the quarter.

Dictionary page, close on the entry for strategy

Psychology &Decision Making

The human variable.

Judgment, incentives, and the biases that move markets. The most expensive bugs ship between someone's ears.

Anatomical brain engraving printed over a dictionary page

The authors

Two people, four lenses, split down the middle.

Arif İsmail Bayrak

Co-founder

Arif İsmail Bayrak

Connecting builders and tech leaders, with a background in VC and an AI venture studio. Boğaziçi University BSc MIS and Imperial MSc alumnus.

Leads the tech and capital lenses: deals, financing, tech, and growth mechanics.

Kerem Özkefeli

Co-founder

Kerem Özkefeli

Bridges economics and psychology on one side; consulting, private equity, and expert networks on the other. 2,000+ C-suite conversations across strategy and M&A diligence.

Leads the strategy and psychology lenses: positioning, judgment, and decision making.

The digest

One email. Only when we ship.

New Stack issues, Library essays, and episodes from Spotlight and Fireside, all in a single email. No per-pillar settings, no noise.