Conde Nast Portfolio, April 2009

The Steve Jobs Economy.

A back-of-the-envelope assessment of how much the ailing CEO has been worth to Apple and to the tech industry overall.

Conde Nast Portfolio, March 2009

Fare Value

A back-of-the-napkin estimate of how much New York could get if it decided to put its transit system on the block.

Conde Nast Portfolio, November 2008

The Giving Game: Billionaire Edition.

In the upper tier of philanthropy, it’s not just about the cause and the gift. It’s about outdoing the other guy. Here is Condé Nast Portfolio’s look at which billionaires are giving the most, relative to their wealth; which are giving the least; and who is refusing to say.

Conde Nast Portfolio, November 2008

The Bond Market.

A rough estimate of how much the world’s most famous spy has brought in since his debut in 1953.

Conde Nast Portfolio, October 2008

The Tab For The Four Seasons

A back-of-the-napkin estimate of the value of New York’s legendary power-lunch spot.

Conde Nast Portfolio, June 2008

The Confessions of Barry Diller.

The media mogul almost lost it all in an epic battle with partner John Malone. Now he talks about what went wrong —and how he plans to reinvent himself one more time.

Conde Nast Portfolio, April 2008

The Escort Economy

A back-of-the-pillowcase analysis of just how big the high-end call-girl business really is.

Conde Nast Portfolio, March 2008

Cubs Calculus

A back-of-the-napkin analysis of how much investors might be willing to pay for Chicago’s beloved underdogs.

Conde Nast Portfolio, February 2008

The Britney Economy

A back-of-the-napkin calculation of just how much the scandal-plagued star is worth to the multitudes who make money off her.

Conde Nast Portfolio, January 2008

Wall Street Family Values
Family foundations are on the rise. Who’s giving—and who’s missing?