Why care about dynamic market supply and demand? You only care about the price at which you buy and sell.
Market is NOT a component of fundamentals. When you buy a cabbage, no matter how much it's price changes, the cabbage will not change its quality by the slightest amount.
Of course market affects securities price. But we don't have to pay too much attention to it. If the business is good, why do we need to worry that the market may not follow suit? On average and in the long run, our profit is determined by business, not market.