David Pinsen

Author


Dog days

The new dog, swimming in someone else’s pool:

Howard Lindzon on Portfolio Armor

From the comment thread of Fred Wilson’s post Apocalypse and Bubbles:
Me:
[Quoting Bob Warfield] “This one is self-referential because Thiel uses Bubble Logic to argue that you’ve got to bet on the next bubble. Why? Because the alternative is all-out Global War and nobody survives.”[/Quote]
There would seem to be an obvious third alternative (actually, there are [...]

Portfolio Armor versus Black-Scholes

A commenter on another site asked whether it would be simpler to calculate Black-Scholes or another options pricing model in an Excel spreadsheet than to spend three seconds entering a position into Portfolio Armor. My academic finance consultant, the all-but-dissertation Ph.D. candidate in finance who developed Portfolio Armor’s algorithm, offered this response:
Seems like the person [...]

Updates and links for 9/3/10

The last time you got your ass kicked
The Last Psychiatrist has good taste in TV. Here he blogs about a recent episode of the F/X show Louie, “Bully”. Below is the trailer for the episode. Incidentally, in addition to being a sharp writer, the way TLP breaks up his posts with roman numerals is a [...]

Wanted: iPhone app icon

Update: I awarded this project to a vendor I found on Elance. Looks like he’s done some nice work with icons..
This is the logo of my company’s web app, Portfolio Armor:

What I need is a version of that logo to serve as the icon for the Portfolio Armor iPhone app. The icon should be [...]

Updates and thoughts for 9/2/10

Wine is terroir

I had the pleasure of meeting Arnold Waldstein Tuesday evening at his local watering hole, Terroir. Nice place; don’t let the current iteration of their website throw you off. It was the first time I’d seen a bar have Riesling on tap, but I ended up having some Greek red, the name of [...]

Answers from Alloy Steel

Below are shareholder questions and answers from Alloy Steel International. As I mentioned in the previous post, these questions and answers were edited and reviewed by the company, following our call.

Q: Can you offer independent verification of Arcoplate and Super Arcoplate’s superiority to other wear plates?
A: Many clients are reluctant to make testimonials. Third [...]

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