When you think about AI connectivity stocks, you probably picture the GPUs first. The chips get the headlines and the spending.
But a GPU is useless if it cannot talk to the thousands of GPUs around it. The wiring that moves data between chips, servers, and racks is now the real constraint.
Two companies sell almost nothing else. Astera Labs and Credo Technology are connectivity pure-plays, and both are growing fast.
A modern AI training run is not one chip. It is a cluster of tens of thousands of GPUs working as a single machine.
Those GPUs constantly exchange data. If the links between them are slow, the expensive chips sit idle waiting.
That is why connectivity has become the bottleneck. The plumbing decides how well the whole system performs.
This plumbing includes PCIe retimers, switches, active electrical cables, and optical DSPs. Each one keeps the GPUs fed with data at high speed.
As clusters get bigger, the connectivity problem gets harder. More chips mean more links, longer cable runs, and tighter signal margins.
So the value is shifting toward whoever solves the signal-integrity problem. That is the gap these two companies were built to fill.
It is also why their revenue can grow faster than the GPU market itself. They benefit when clusters get larger, not just more numerous.
Both companies sell the components that hold AI clusters together. Their growth shows how much demand there is for that plumbing.
Astera Labs posted record revenue of $308.4M in Q1 2026. That was up 93% year over year and 14% from the prior quarter.
GAAP gross margin came in at 76.3%, which is unusually high for hardware. According to The Motley Fool: the quarter reflected broad strength across its Intelligent Connectivity Platform.
Its product line centers on that platform plus a full PCIe 6 portfolio. It also ships 32-to-320-lane PCIe switches and Smart Cable Modules.
The newest addition is the Scorpio X-Series, a 320-lane AI scale-up fabric switch. You can track shares of ALAB as this portfolio ramps.
Credo grew even faster. Revenue hit $437.0M in Q4 FY2026, up 157% year over year and 7.4% from the prior quarter.
The quarter before that, Q3 FY2026, brought $407.0M and growth of about 201% year over year. GAAP gross margin in the latest quarter was 68.2%.
Credo is best known for its ZeroFlap Active Electrical Cables, branded ZF AECs. It also sells ZF optical transceivers and OmniConnect memory solutions.
Its retimers and DSPs serve optical and copper Ethernet plus PCIe. Shares of CRDO have tracked that surge in demand.
Trade US stocks from $1 and use fractional shares to take a small position in both connectivity names. Start with Gotrade.
Both companies ride the same AI capex wave that lifts NVDA GPUs. When hyperscalers buy more chips, they buy more connectivity too.
The difference is scale and focus. ALAB and CRDO are smaller, higher-growth pure-plays built around connectivity alone.
The bigger players are more diversified. AVGO and MRVL sell connectivity and custom silicon across many markets.
That makes the relationship complicated. Broadcom and Marvell both partner with and compete against the pure-plays in different pockets.
For context on how the larger custom-silicon players fit in, see this look at Marvell and custom silicon. It frames the same data-center build-out from the diversified-vendor side.
According to TradingView: investors are actively weighing CRDO against ALAB as competing ways to play the same theme.
The growth is real, but so is the price. Both stocks trade at high revenue multiples.
That leaves little room for error. A single soft quarter can trigger a sharp move when expectations are stretched.
Customer concentration is the other risk. A handful of large customers drives much of the revenue at both companies.
The biggest threat is a slowdown in hyperscaler AI capex. If the giants pause spending, these pure-plays would feel it fast.
That risk profile is why position sizing matters more than conviction here. Small, deliberate exposure can let you participate without betting the account.
It also helps to think of these as a basket rather than a single pick. Owning both spreads the bet across two takes on the same theme.
This is where fractional investing helps. You do not need to buy a whole share to hold both names side by side.
Connectivity is no longer a footnote in the AI story. It is the bottleneck that decides how well a GPU cluster actually performs.
Astera Labs and Credo are two of the clearest pure-play bets on that plumbing. Both are growing fast, and both trade at prices that demand it.
Treat them as high-growth, high-risk exposure to one theme. Size your position for the volatility, not just the upside.
Trade US stocks from $1 and use fractional shares to take a small position in both connectivity names. Open a Gotrade account.
FAQ
What do AI connectivity stocks actually sell?
They sell the retimers, switches, cables, and DSPs that move data between GPUs, servers, and racks.
How fast are ALAB and CRDO growing?
ALAB grew revenue 93% year over year in Q1 2026, while CRDO grew 157% in its latest quarter.
What is the main risk with these stocks?
High valuations and heavy customer concentration make them very sensitive to any slowdown in AI capex.
Can I buy ALAB and CRDO with a small amount?
Yes, fractional shares let you take a small position in both names from $1 on Gotrade.
Disclaimer
Gotrade is the trading name of Gotrade Securities Inc., which is registered with and supervised by the Labuan Financial Services Authority (LFSA). This content is for educational purposes only and does not constitute financial advice. Always do your own research (DYOR) before investing.
