So, Meta Platforms (META) shares are moving up this week. It's a simple story with a couple of familiar ingredients: a little less fear in the world and a lot of faith in a tech giant's big, expensive plans.

The first part is about geopolitics. Technology stocks, which had been feeling some pressure, got a lift after former U.S. President Donald Trump suggested in a phone interview with CBS News that the U.S. campaign against Iran might be nearing its conclusion. He argued Tehran's military capabilities had been "significantly weakened." When headlines about potential conflict start to fade, investors often feel better about putting money into growth-oriented companies like the big tech names. It's a classic risk-on move, and Meta was among the beneficiaries.

The second, and arguably more important, part of the story is what Meta is building. Investors are constantly weighing the company's massive, long-term push into artificial intelligence. It's spending heavily on AI infrastructure and tools across its platforms. That's a multi-year bet that doesn't pay off overnight, but it's central to the bull case for the stock. When the market is in a good mood, it's easier to focus on that potential future rather than the huge capital expenditures required today.

Adding some fundamental fuel to the rally, analysts at Citizens recently reaffirmed a Market Outperform rating on Meta and set a price target of $900. Their reasoning is straightforward: people are spending more time on Meta's apps. They noted that total global time spent across Meta's platforms has risen about 17% year over year. Even more impressive, that 17%-or-more growth rate has held steady for seven consecutive months, with February posting another 17% annual increase. That's not a spike; it's a trend. Strong, sustained user engagement is the bedrock for everything else Meta wants to do, from advertising to building the metaverse to deploying AI.

Put it all together, and you get a stock that's climbing. At the time of publication on Tuesday, Meta Platforms shares were up 1.77% at $658.85, according to market data. It's a reminder that for mega-cap tech stocks, the price action often comes down to a mix of macro sentiment easing up and micro execution holding steady.