So I've been thinking about what's a good stock to buy right now with some spare cash, and honestly the market setup looks pretty interesting heading into the rest of 2026. We're three years deep into a solid bull run - the S&P 500 has crushed it with a 94% gain since late 2022, and the big banks are still pretty bullish. Deutsche Bank's calling for 8,000 on the index by year-end, which would be another 15% from here. That's the kind of environment where having $1K to deploy actually matters.

If you've got a grand sitting around after expenses and you're looking for what's a good stock to buy right now, I'd break it into a few buckets based on what you think will drive returns. There's the "moonshot" play, and then there's the more straightforward infrastructure bet.

Let me start with the wild card - quantum computing. Yeah, it sounds like sci-fi stuff, but McKinsey's projecting the market goes from $4B in 2024 to $72B by 2035. That's real money. IonQ is the pure-play here. They design and build quantum computers, plus they're offering services through the major cloud providers. The company's tiny still, but growth is insane - first nine months of 2025 saw revenue more than double year-over-year to $68M, with Q3 alone up 222%. What really caught my attention was their October announcement hitting 99.99% two-qubit gate fidelity. That's basically saying their systems are almost error-free, which is huge for actually making this tech useful. They claim their cost per system is 30x lower than competitors too. Yeah, the stock's pricey at 158x sales and it'll be volatile, but if quantum actually takes off, being early could pay off big. That's the kind of what's a good stock to buy right now if you can stomach the risk.

Now for the more obvious play - AI infrastructure. Gartner's expecting AI infrastructure spending to jump 41% this year to $1.4 trillion. That's not hype, that's actual capex flowing into the system. Celestica's sitting pretty here. They design and manufacture networking components for AI accelerator chips from Broadcom, Marvell, AMD, Intel. They're also building the rack-scale networking solutions that hyperscalers need for their AI data centers. Revenue jumped an estimated 27% in 2025 to $12.2B, and the forecast shows acceleration ahead. Trading at just 3.2x sales, this feels like the no-brainer what's a good stock to buy right now if you want something with momentum but reasonable valuation.

Then there's Micron Technology. Memory chips - not as sexy as quantum or as obvious as networking gear, but honestly might be the best value play. Trading under 10x sales with forward earnings at 11x, yet they're printing money. Earnings could jump nearly 4x this year on a 100% sales increase. The tailwind is simple: there's a shortage of memory chips for AI data centers, smartphones, everything. Demand's crushing supply and that trend runs through 2028 at least. Even as memory makers add capacity, it takes time to build new fabs. So prices stay elevated. Micron's already up 243% over the past year, but if the memory shortage persists like I think it will, there's more room. Definitely what's a good stock to buy right now if you want exposure to AI without the valuation extremes.

So if I had $1K to put to work? I'd probably throw a chunk at Celestica for the cleaner growth story, grab some Micron for the value angle and memory shortage thesis, and maybe take a smaller position in IonQ just to have a quantum computing bet on. The broader market tailwinds are there - spending on AI infrastructure is real and accelerating, and quantum's starting to look less like vaporware. That's the kind of environment where what's a good stock to buy right now has real answers.