The US is close to a deal with Iran. That's it. That one thing is why oil dropped below $100 a barrel, why the S&P hit new records, and why your portfolio is probably green right now.
When geopolitical risk declines, money flows back into equities quickly. That's not luck. That's the market doing exactly what it always does.
What you should take from this: volatility isn't random. It has a cause. Learn to identify the cause, and you stop panicking every time red shows up on your screen.
The guys who sold during the Iran conflict just watched the market rip without them.
Don't be that guy.