2024 started with a market-wide sell-off. The tech sector—2023’s undisputed winner and credited for restoring confidence and pulling other sectors to bullish territories—saw droves of investors pocketing profits last week, wiping out about $500 billion in market cap from the S&P’s top 12 biggest tech companies and bringing the rest of the index down. Things aren’t looking too good at the start of the year. Still, we have 12 more months to continue 2023’s tail-end bull run. There’s no need to start worrying yet, right? Well, some investors don’t think so. They point to the “first five days indi…