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Understanding the Nasdaq insider trading information
Usually insiders are in a better position than you to understand their business, but that doesn't mean they will know the future with perfect accuracy. Sometimes they are wrong, sometimes life events force them to liquidate an otherwise promising investment, sometimes their minds change. So while it is indeed valuable information, as everything in fundamental analysis it must be taken with a grain of salt. Automatic Sell I think these refer to how the sell occurred. Often the employees don't get actual shares but options or warrants that can be converted to shares. Or there may be special predetermined arrangements regarding when and how the shares may be traded. Since the decision to sell here has nothing to do with the prospects of the business, but has to do with the personal situation of the employee, it's not quite the same as outright selling due to market concerns. Some people, for instance, are not interested in holding stock. Part of their compensation is given in stock, so they immediately sell the stock to avoid the headache of watching an investment. This obviously doesn't indicate that they expect the company will go south. I think automatic sell refers to these sorts of situations, but your broker should provide a more detailed definition. Disposition (Non Open Market) These days people trade through a broker, but there's nothing stopping you from taking the physical shares and giving them to someone in exchange for say a stack of cash. With a broker, you only "sell" without considering who is buying. The broker then finds buyers for you according to their own system. If selling without a broker you can also be choosy with who is buying, and it's not like anybody can just call up the CEO and ask to buy some stock, so it's a non-open market. Ultimately though it's still the insider selling. Just on a different exchange. So I would treat this as any insider sell - if they are selling, they may be expecting the stock to become less valuable. indirect ownership I think this refers to owning an entity that in turn owns the asset. For instance CEO of XYZ owns stock in ACME, but ACME holds shares of XYZ. This is a somewhat complicated situation, it comes down to whether you think they sold ACME because of the exposure to XYZ or because of some other risk that applies only to ACME and not XYZ. Generally speaking, I don't think you would find a rule like "if insider transactions of so and so kinds > X then buy" that provides guaranteed success. If such a rule was possible it would have been exploited already by the professionals. The more sensible option is to consider all data available to you and try to make a holistic evaluation. All of these insider activities can be bullish or bearish depending on many other factors.