How exactly does a shareholder notice the 'book value' of a company? Publicly traded companies are obligated to file quarterly reports which prominently list t

How exactly does a shareholder notice the 'book value' of a company? Publicly traded companies are obligated to file quarterly reports which prominently list this number; Googling "$NAME book value" will bring it up for any publicly listed company in the US. A particular retail investor may not notice this, but this is approximately "What is the difference between a number and a string?" for professionals. In the majority of cases, shareholders don't attempt to extract book value. So-called "value" investors preferentially invest in companies which trade at a discount to book value; this tends to correct trading prices towards it, without the nuclear option of cracking open the company to sell off its juicy innards. (Which does happen, very occasionally, generally via private equity buyouts.)