May 11, 6:34 pm
The layoff headlines keep coming. But our headcount data shows a handful of companies growing their teams 30 to 55% in just three months. Here are the seven names retail investors should be watching, and what the hiring surge signals about what comes next.
AltIndex Research | May 2026 | ONDS, WULF, RZLV, IREN, CEG, DVLT, NBIS
Every week in 2026 brings another round of restructuring announcements. Block, Coinbase, Meta are just some companies that have announced layoffs. Even some of the largest employers in America are talking about "doing more with less."
But there's a different story hiding in the data. We track LinkedIn employee counts for thousands of public companies, and right now a small group of stocks is moving hard in the opposite direction. Not hiring a few people here and there, but growing their teams 30%, 40%, even 55% in a single quarter.
That kind of headcount expansion is expensive. It requires real conviction from management, real budgets, and - more importantly - real demand to justify the investment. When companies grow this aggressively, they're telling you something about their pipeline that hasn't shown up in earnings yet.
We screened our universe for companies with the highest LinkedIn employee growth over the past three months, cross-referenced it with our AI Scores, stock performance, and employee business outlook data, then filtered for names with a real growth story behind the numbers.
Here are the seven that made the cut.
| Company | Employees according to LinkedIn |
3mo Growth | Price | AI Score | |
|---|---|---|---|---|---|
 |
OndasONDS |
28 from 18 |
+55.6% | $9.42 +1.2% |
60 |
 |
Datavault AIDVLT |
87 from 67 |
+29.9% | $0.51 -35.4% |
65 |
 |
Rezolve AIRZLV |
439 from 302 |
+45.4% | $2.72 +19.8% |
61 |
 |
TeraWulfWULF |
61 from 43 |
+41.9% | $23.37 +43.7% |
64 |
 |
NebiusNBIS |
1,126 from 866 |
+30.0% | $186.10 +89.9% |
69 |
 |
Constellation EnergyCEG |
13,159 from 10,588 |
+24.3% | $299.69 +4.0% |
59 |
 |
Iren LimitedIREN |
339 from 274 |
+23.7% | $55.15 +30.6% |
64 |
A note on methodology: The employee counts we use are derived from LinkedIn profile data, not official company filings. LinkedIn headcount tends to undercount total employees (not everyone has a profile, and not every profile is current), but it's a useful proxy for the direction and velocity of hiring. A company going from 85 to 126 LinkedIn-listed employees in three months may actually have a larger total workforce, but the signal is clear: they're scaling up fast.
Communication Equipment · $4.4B Market Cap · $9.42 · +1.2% 3-month return · AI Score 60 · Employees: 18 → 28 (+55.6%)
Ondas is the fastest-growing company on this list by headcount percentage, and the reason is straightforward: they've been on an acquisition spree that's reshaping what the company actually is. In Q1 2026 alone, Ondas closed five acquisitions including World View, Mistral, Rotron Aerospace, and INDO Earth Moving, pushing its pro forma backlog to $457 million.
The numbers tell the transformation story. Full-year 2025 revenue hit $50.7 million, up 605% year-over-year. Management raised 2026 revenue guidance to at least $375 million, with roughly $230 million of that expected from the new acquisitions. The Mistral merger alone added $264 million in backlog and gives Ondas direct prime contractor access to U.S. Army and Special Operations contracts.
Then there's the FIFA World Cup. Ondas subsidiary Sentrycs was selected to deploy counter-drone protection across venues in all 16 host cities across the U.S., Canada, and Mexico. That's the kind of real-world validation that turns a speculative drone story into a defense platform play.
The company is growing, but the risk here is integration. Five acquisitions in a single quarter is aggressive, and Ondas is assembling a business model through M&A rather than scaling an existing one. If execution slips, the backlog-to-revenue conversion could stall.
AI Data Centers · $11.5B Market Cap · $23.37 · +43.7% 3-month return · AI Score 64 · Employees: 43 → 61 (+41.9%)
TeraWulf is one of several former Bitcoin miners pivoting to AI infrastructure, but it may be the furthest along in making the transition real. In Q1 2026, high-performance computing lease revenue reached $21 million, accounting for over half of total revenue for the first time. Bitcoin mining, which drove 90%+ of revenue in 2025, is now officially the secondary business.
The company has been acquiring brownfield industrial sites and converting them to AI data centers. Its Lake Mariner campus in New York (built on a retired coal plant) already has multiple buildings live, with Fluidstack leasing 360MW of capacity in deals backed by Google. A new 480MW campus in Hawesville, Kentucky, is under construction, funded by a $900 million equity raise in April. Morgan Stanley recently boosted its price target to $41.50.
The headcount surge from 43 to 61 is small in absolute terms, but for a company of TeraWulf's size, that's nearly every new hire showing up on LinkedIn. These are the data center engineers and project managers needed to bring gigawatt-scale facilities online. Our AI Score of 64 is a buy signal, supported by strong customer interest metrics. The stock has responded, up 43.7% in three months, but with $17 billion in contracts on the books, the market is pricing in execution, not just the vision.
Application Software · $957M Market Cap · $2.72 · +19.8% 3-month return · AI Score 61 · Employees: 302 → 439 (+45.4%)
Rezolve AI is building what it calls "agentic commerce," AI-powered tools that let retailers deploy conversational product discovery, visual search, and autonomous checkout. The company went from 302 to 439 LinkedIn employees in three months, a 45.4% increase that suggests aggressive global scaling.
The business has real enterprise traction. Q1 2026 revenue exceeded 125% of full-year 2025 audited revenue, and management guided to $360 million for the full year. Strategic partnerships with Microsoft and Google are live, with Rezolve's commerce-tuned AI models (called "brainpowa") now available in Microsoft Foundry on Azure. The company is also pursuing a proposed combination with Commerce.com that would create a $700 million agentic commerce platform.
Live deployments include GAP and Banana Republic in Mexico, and a major renewal with AJIO, Reliance Retail's fashion platform with over $2.5 billion in annual e-commerce sales. Our AI Score of 61 is a buy signal. At $2.72, the stock is well below its 52-week highs, leaving room for upside if the revenue trajectory holds.
AI Cloud Infrastructure · $20.3B Market Cap · $55.15 · +30.6% 3-month return · AI Score 64 · Employees: 274 → 339 (+23.7%)
IREN might have started out as a crypto mining company but the business has fundamentally transformed into an AI cloud infrastructure provider. The company now describes itself as "a leading AI Cloud Service Provider, delivering large-scale GPU clusters for AI training and inference," and the recent deal flow backs that up.
AltIndex LinkedIn Employee Data · Stock Price via Market Data
On May 7, IREN announced a $3.4 billion, five-year AI cloud contract with NVIDIA, alongside a strategic partnership targeting 5GW of NVIDIA DSX-aligned AI infrastructure. NVIDIA was confident enough to take a 5-year right to purchase up to 30 million IREN shares at $70 per share, a potential $2.1 billion equity investment. This follows a $9.7 billion agreement with Microsoft signed in late 2025 to deploy GPU clusters at IREN's 750MW campus in Childress, Texas.
The 23.7% employee growth makes sense in this context. IREN is scaling from a small mining operation to a company with $3.1 billion in annualized run-rate revenue under contract, targeting $3.7 billion by year-end. The headcount addition of 65 people includes the kinds of roles you need for this pivot: data center engineers, cloud platform developers, and enterprise sales.
Energy · $110B Market Cap · $299.69 · +4.0% 3-month return · AI Score 59 · Employees: 10,588 → 13,159 (+24.3%)
Constellation Energy is the largest name on this list by a wide margin: $110 billion market cap, 55GW of generation capacity, and the biggest nuclear fleet in the United States. Adding 2,571 LinkedIn employees in a quarter is a different scale of signal than the smaller names here. This isn't a startup hiring its first sales team. This is a Fortune 200 company staffing up for a structural shift in its business.
That shift is nuclear power for AI. Constellation has secured over 5,650 megawatts of long-term clean energy contracts with hyperscalers. Microsoft is the anchor: the landmark deal to restart the Three Mile Island reactor in Pennsylvania to supply power to Microsoft data centers. Meta signed a 20-year agreement to keep an Illinois reactor running. And in January, Constellation completed its $16.4 billion acquisition of Calpine Corporation, adding 23GW of natural gas and geothermal capacity.
The company is now pursuing 1GW of nuclear uprates over the next decade, with $3.9 billion in capital spending planned for 2026 alone. Analysts project 20% EPS growth this year. The employee business outlook at 83% is the second highest in this group, which matters when you're asking thousands of nuclear engineers and operators to execute a multi-year buildout. Our AI Score is 59, in hold territory but right at the buy threshold. The stock has only moved 4% in three months despite the massive hiring. For investors who believe AI power demand is structural, that gap between headcount growth and stock appreciation could represent opportunity.
Application Software · $464M Market Cap · $0.51 · -35.4% 3-month return · AI Score 65 · Employees: 67 → 87 (+29.9%)
Datavault AI is the most speculative name on this list, and we want to be upfront about that. The company is trading at $0.51, down 35% in three months, even as it added 20 people to bring LinkedIn headcount to 87.
The company recently announced a partnership with Available Infrastructure to deploy a distributed network of modular mini data centers across 100+ U.S. cities, targeting 48,000 GPUs across 1,000 micro-edge sites by year-end 2026. A $60 million equity raise closed in May to fund the buildout. The company also operates a "Data Sciences" division focused on RWA tokenization and AI-driven data monetization, alongside an "Acoustic Sciences" division (formerly WiSA Technologies) that develops wireless audio technology.
This is the part where we have to be honest. The ambitions here are enormous relative to the company's size. A $464 million market cap company planning a "$50 billion compute backbone" requires several leaps of faith. The stock is down sharply, the business model spans at least three unrelated verticals, and the $60 million raise came with significant dilution. The hiring is real, but this one demands careful due diligence. View the full DVLT analysis on AltIndex.
Cloud Computing · $44.9B Market Cap · $186.10 · +89.9% 3-month return · AI Score 69 · Employees: 866 → 1,126 (+30.0%)
Nebius is the cleanest story on this list. Highest AI Score (69). Highest employee business outlook (91%). Strong headcount growth (30%). And the stock has responded, up 89.9% in three months to $186. The question is whether there's still room to run.
AltIndex LinkedIn Employee Data · Stock Price via Market Data
Nebius has reinvented itself as a full-stack AI cloud platform and landed contracts that would be impressive for a company ten times its age. The numbers: a $19.4 billion multi-year deal with Microsoft. A $27 billion expanded agreement with Meta (up from an initial $3 billion). A $2 billion direct equity investment from NVIDIA. And just a couple of days ago, a $643 million acquisition of Eigen AI that pushes the company toward a higher-value AI platform model. Total contracted backlog approaching $50 billion for the 2027-2031 period, against 2025 revenue of $530 million.
Management is guiding for $3 to $3.4 billion in 2026 revenue and roughly 40% adjusted EBITDA margins. The employee growth from 866 to 1,126 reflects the kind of scaling you'd expect when a company is simultaneously building out gigawatt-scale data centers across the U.S. and integrating a major acquisition.
The 91% employee business outlook is the real standout. People inside Nebius believe in what they're building. In an industry full of companies talking about AI infrastructure, this metric suggests the team executing actually thinks they're winning. Analysts have 27 buy ratings on the stock with price targets ranging from $143 to $211.
Employee growth is a leading indicator, not a guarantee. Companies that scale teams aggressively can stumble on integration, burn cash without converting pipeline, or face skepticism even as they execute. But when you see seven companies across AI infrastructure, defense tech, nuclear energy, and enterprise software all hiring at 24 to 55% rates in the same quarter, it points to something structural happening in those markets.
The strongest signals in this group combine headcount growth with other confirming data: Nebius pairs 30% employee growth with 91% employee outlook and a $50 billion backlog. TeraWulf matches 42% hiring growth with its first quarter where HPC revenue exceeded Bitcoin mining. Constellation is adding thousands of people to build out nuclear capacity that hyperscalers are locking up under 20-year contracts.
The data doesn't tell you which of these stocks will outperform. It tells you where the conviction is being backed by real operational commitment. In a market obsessed with who's cutting, the companies quietly building might be the ones worth watching.
LUNR and USAR showed these same signals earlier this year
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Get Started for Free →Sources: AltIndex LinkedIn employee data, AltIndex AI Score data, Glassdoor employee business outlook, company filings and press releases. Employee counts derived from LinkedIn profile data and may differ from official company headcount. Growth measured from approximately February 15 to May 11, 2026. Stock prices as of May 11, 2026. This article does not constitute investment advice.
Disclosure: This article is for informational purposes only and does not constitute investment advice. AltIndex aggregates publicly available alternative data signals. Past signal performance does not guarantee future results. Always do your own due diligence before making investment decisions.
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