Where there any stocks that increased significantly in value during the 9/11 tragedy? Which ones and why?

About the only ones that did well were defense and the small security stocks - like companies that do facial recognition and so on. Almost everthing did very badly though.

oil and defense stocks do well. but the best option is buying put options to defend against a sudden downturn in the market due to any reason for the drop, whether it be terrorism or natural disaster or anything else for that matter.when 9/11 happened the people who used this strategy lost money on their stock positions but made a lot more by guarding their positions from the terror attack

weapons manufacturer Raytheon:"A Raytheon option that makes money if shares are more than $25 each had 232 options contracts traded on the day before the attacks, almost six times the total number of trades that had occurred before that day. A contract represents options on 100 shares. Raytheon shares soared almost 37 percent to $34.04 during the first week of post-attack U.S. trading. 13 "http://911research.wtc7.net/sept11/stockputs.htmlUS treasure notes:The Wall Street Journal reported on October 2 that the ongoing investigation by the SEC into suspicious stock trades had been joined by a Secret Service probe into an unusually high volume of five-year US Treasury note purchases prior to the attacks. The Treasury note transactions included a single $5 billion trade. As the Journal explained: "Five-year Treasury notes are among the best investments in the event of a world crisis, especially one that hits the US. The notes are prized for their safety and their backing by the US government, and usually rally when investors flee riskier investments, such as stocks." The value of these notes, the Journal pointed out, has risen sharply since the events of September 11"http://911research.wtc7.net/sept11/stockputs.htmlRemember that people can also make money by selling short companies, specially arlines: AA, United Airlines, etc.This webpage offers more info:http://homepage.mac.com/suecollins/school/stocks/stocks.htm