As a followup to recent post analyzing Nancy Pelosi's data, this data is from **Alan Lowenthal,** who represents western Orange County in southern California.

Side note: I went to Claremont for graduate school and find this to one of the most beautiful areas in the world and has incredible surf spots.

I analyzed his trade history data (from publicly available resource/API), here are a couple of highlights:

1. His cumulative performance beat the S&P benchmark by a whopping 11% (a 41% relative improvement)--truly impressive by professional money management standards.
2. However, on the active management side, we find dramatic Disposition Effect (‘selling winners too soon, losers too late’) errors reducing his performance (“negative behavioral alpha”) by a dramatic 43%. Ouch.

![Image upload](https://cdn.commonstock.com/b81bc1cec4c5d8e1bf750bd686ec3bb9d09d7ee667aeb6b40b51b74a042c0188-1264x827.png)

![Image upload](https://cdn.commonstock.com/cb2f1bb8ac816d43546a9ff974d16735718231912f80151541e813d0fcfbfa4c-836x204.jpg)