Blog | DeYirviel

2026-07-26 13 min readM&A

Ideologies, Wars, Politics, Economy, Finance, M&A: Exxon × Mobil

How a quarter-century of oil-price whiplash — 1973 to 1998 — forced the last heirs of Standard Oil back together, and why the terms of a '$74 billion stock swap' were never just paper.

2026-06-30 5 min readQuant

My First Quant Model — What a Casino Taught a Finance Class About Risk

A class assignment to manage a 1,000,000 MAD portfolio ended in a professor's compliment I couldn't fully justify — so I rebuilt the model alone, from the ground up, to earn it.