As an angel investor, I can anecdotally confirm that I've become more cautious recently (in the last year, really). However, I'm not at all concerned about the stock market. That has never influenced my decision to fund a company. My belief is that a strong company can weather a bear market. I'm concerned with the current state of valuations - I enjoy giving investments to companies on the order of five figures or so…
> However, I'm not at all concerned about the stock market. That has never influenced my decision to fund a company. It probably will as things start to slow down. During the growth phase of the business cycle, many companies do well. Even some with poor fundamentals that shouldn't. This is the danger of stimulus - it promotes an inefficient and wasteful allocation of resources. But it makes investing easier as a lar…
But like you said, I don't consider it helpful to pay attention on a day to day basis, and I find it to be a more useful indicator for macrotrends than microtrends. In other words, my understanding of the stock market will influence my opinions about the angel investing and startup market en masse, but it would not be anything more than one factor in my opinion about a single company I could invest in.
While it's true that companies with strong fundamentals do fail in a downturn, companies with strong fundamentals can fail for any number of reasons. Just as I'm not all that concerned with my Vanguard funds going down for a while because they'll be back up in 10 years, I'm not too worried about a single company with strong fundamentals getting caught with its shorts down when the tide goes out. If it happens, it happens; in the absence of other poignant data, however, I find it much more important to focus on the company itself and pay attention to macrotrends more infrequently.
Besides, a market downturn is an excellent time to hedge long bets with shorts :)