If you call those SEC generated letters, I think people should take your DD with a grain of salt. Those are all financial filings every company is required to make with the SEC. Yes, everyone should pay attention to those, and most investors do, but not because the SEC is singling out the company for criticism or deficiencies as you implied. The SEC does send letters to companies for this purpose but they are not usually published any more because companies often have justifications for their actions and an SEC inquiry could leave an unfair impression that could affect the stock price.
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