Updated from 6:59 a.m. EDT

One of the primary goals of Stockpickr.com is to allow everyday investors a look at what the big guns are buying. Often, we see a big-name investor loading up on a particular stock. This is usually a good sign, because you know that person put a lot of time and due diligence into that process.

But when that same company announces that an insider has purchased a large chunk of stock or, even better, the board announces a new share-buyback program, that usually seals the bullish case for the stock.

As Jim Cramer often points out, insider selling happens all the time for many different reasons, but insiders buy for only one reason: They think their stock is going higher.

That's why, each week at Stockpickr, we update the

Top 10 Insider Purchases and Buybacks

portfolio, featuring stocks that have had either big insider purchases or newly announced buybacks as well as super investors accumulating shares.This week's portfolio includes

Broadcom

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and

Humana

(HUM) - Get Humana Inc. (HUM) Report

.

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A note from James Altucher:Every weekend I send an email to Jim Cramer and several hedge fund managers about the most interesting portfolios posted on Stockpickr that week. Usually those portfolios not only list stocks according to atheme but also offer significant analysis as to why the stocks are cheap.Here are some examples: Here's the challenge: Build a portfolio at Stockpickr.com with greatanalysis, and send me the link. Each great portfolio (with analysis)will get posted on TheStreet.com with your byline (as a "StockpickrGuest Columnist") and will be included in my email I send to Jim and the otherhedge fund managers on my list.

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At the time of publication, Altucher and/or his fund had no positions in stocks mentioned, although positions may change at any time.

James Altucher is president of

Stockpickr

LLC, a wholly owned subsidiary of TheStreet.com and part of its network of Web properties, and a managing partner at Formula Capital, an alternative asset management firm that runs a fund of hedge funds. He is also a weekly columnist for the

Financial Times

and the author of

Trade Like a Hedge Fund

,

Trade Like Warren Buffett

and

SuperCa$h

. Under no circumstances does the information in this column represent a recommendation to buy or sell stocks. Altucher appreciates your feedback;

click here

to send him an email.

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