BERKSHIRE 101: An introduction to Warren Buffett's $400 billion empire

Yahoo Finance will host the exclusive live stream of Berkshire Hathaway’s shareholder meeting on May 6, 2017.

Berkshire Hathaway (BRK-A) (BRK-B) was a struggling textile company when Warren Buffett first invested in it in 1962.

Today, it’s a $400 billion behemoth. In Buffett’s own words, it’s a “sprawling conglomerate, constantly trying to sprawl further.”

The companies in Berkshire’s portfolio vary greatly. But one thing ties them all together: Buffett says they’re about “maximizing long-term capital growth.”

Here’s a brief introduction to Berkshire Hathaway.

The insurance business is the backbone of the company

After it acquired National Indemnity in 1967, Berkshire relied on its insurance businesses to power much of its expansion.

As Berkshire has gotten bigger and diversified its businesses, its insurance operations have become a smaller contributor to earnings than in the past, currently making up 26% of total company earnings. But they remain an important part of the company’s access to a permanent capital base by generating what’s known as “float.”

Berkshire Hathaway Chairman Warren Buffett talks in front of a mock BNSF railroad engine. REUTERS/Rick Wilking
Berkshire Hathaway Chairman Warren Buffett talks in front of a mock BNSF railroad engine. REUTERS/Rick Wilking

“Float” is money collected up front that is not paid out until later. In Berkshire’s property & casualty (P&C) insurance businesses, premiums are collected up front, but claims are paid out often years or decades later, allowing the float to be used for investments.

Today, Berkshire’s insurance group consists of four segments: GEICO (auto insurance), General Re (reinsurance), BH Reinsurance Group (retroactive reinsurance through subsidiaries), and BH Primary (focused on commercial markets, led by National Indemnity Co).

The property and casualty insurance business has faced headwinds—including deteriorating pricing and margin compression. But 2016 posted solid performance, with GEICO in particular making a comeback. Last year, GEICO suffered from higher personal auto claims (as a result of more low gas prices and more driving), and this year it accelerated new business efforts.

Berkshire’s insurance float was only $1.6 billion in 1990, and sat at $91.6 billion as of 2016. It is now over $100 billion, including the $10 billion reinsurance deal with AIG (AIG).

Equity portfolio

Berkshire’s investment portfolio represents Buffett’s long-term conviction ideas.

At the end of 2016, about 60% of his equity portfolio was invested in five companies—Wells Fargo (WFC), Coca-Cola (KO), IBM (IBM), American Express (AXP) and Apple (AAPL), a position he initiated last year and built up even more recently.


Buffett also made a big bet on airlines last year, diverging from his position in the past. He significantly increased his positions in Delta (DAL), United Airlines (UAL) and American Airlines (AAL) while adding a big stake in Southwest Air (LUV).