New York-based clinical-stage biotech launched with $50M to develop PRO-203, a CD20xCD3 T-cell engager targeting severe autoimmune diseases including systemic sclerosis and lupus. RTW Investments is both the founding investor and sole backer of this round. The company has already dosed its first patients, an unusual position for a launch announcement. Prolium joins a crowded but well-funded autoimmune space alongside Candid Therapeutics ($875M) and others betting that T-cell engagers can transform treatment for diseases where current options fall short.
Daily Funding Roundup:
Mar 3, 2026
Tuesday brought biotech, construction AI, and the biggest defense tech signal of the year. Prolium Bioscience launched with $50M for autoimmune T-cell engagers, while Mojo AI closed a $10M Series B for construction safety. But the day's headline belongs to Anduril, reportedly seeking ~$4B at a $60B valuation, which would make it one of America's most valuable private companies. Meanwhile, IAC sold Care.com at a $180M loss, a reminder that not every marketplace scales into its valuation.
Key Themes
Anduril at $60B would rewrite defense investing. If Anduril closes its reported ~$4B raise at a ~$60B valuation, it would rank among the five most valuable private companies in America, alongside SpaceX, Stripe, and the AI foundation model leaders. Palmer Luckey's company has done what no defense startup has achieved before: built a venture-scale business on government contracts by treating defense like a software problem. For VCs, the question is whether Anduril is a category-defining outlier or the start of a new era where defense tech commands tech-like multiples.
Autoimmune biotech is the sector's hottest sub-category. Prolium Bioscience's $50M launch is the third major autoimmune raise in days, following Candid Therapeutics' $505M PIPE and a growing list of companies betting on T-cell engagers. The thesis: redirecting the immune system to selectively eliminate disease-causing B-cells could replace the broad immunosuppression that defines current treatment. RTW Investments is making concentrated bets here, and the race to clinical proof-of-concept is intensifying.
Marketplace valuations meet reality. IAC selling Care.com for ~$320M, a 36% loss on its $500M acquisition in 2020, is a data point that resonates beyond one deal. Marketplace businesses that traded at peak multiples during the 2020-2021 era are being repriced. For PE buyers, this creates opportunity: Care.com's marketplace of caregivers is a real asset, just not a $500M asset in today's market.
The Rounds
Sandy, Utah-based AI safety platform for construction (formerly Edify.ai) closed a $10M Series B as Fortune 500 adoption accelerates. Mojo AI's flagship product Safety Mojo is a voice-enabled, bilingual safety app for frontline workers on data center construction sites. Clients include Meta, HITT, Prologis, and Sterling Infrastructure. The round brings total funding to ~$21M across all rounds. Construction safety is a $40B+ problem, and AI-powered compliance is gaining traction as the data center buildout creates unprecedented demand for construction labor.
Also noted
Acquisitions
Accenture acquires Ookla
The consulting giant acquires the company behind Speedtest, gaining a data analytics platform used by telecom operators, governments, and enterprises worldwide to measure internet performance. Terms not disclosed.
Pacific Avenue Capital Partners acquires Care.com
The PE firm is acquiring Care.com from IAC for approximately $320M. Care.com is the largest online marketplace for finding caregivers (childcare, senior care, pet care). IAC acquired it for $500M in 2020, marking a significant write-down.
News & Signals
Anduril's $4B raise would value it at $60B, underscoring defense tech's ascent
Reports indicate Palmer Luckey's Anduril Industries is seeking approximately $4 billion in new funding at a pre-money valuation of roughly $60 billion. If completed, this would make Anduril one of the most valuable private companies in the U.S. and the most valuable pure-play defense tech startup by a wide margin. The company's autonomous systems, AI-powered command platforms, and manufacturing capabilities have positioned it as a new-generation defense contractor.
Gaxos.ai pivots from gaming to AI defense
Gaxos.ai, previously a gaming-focused AI company, announced a strategic pivot to defense and national security AI. The company is developing 'GRACE AI,' a sovereign defense-ready platform. The pivot reflects a broader pattern: AI companies across sectors are eyeing defense contracts as government spending accelerates, though pivoting from gaming to classified defense environments is a significant operational leap.
Care.com sold at a $180M loss by IAC
IAC's sale of Care.com to Pacific Avenue Capital Partners for ~$320M represents a ~36% loss on the $500M IAC paid in 2020. The write-down signals that marketplace businesses in the care economy have not grown as fast as their peak-era valuations implied. For PE buyers, distressed marketplace assets at lower multiples present turnaround opportunities.
Biotech autoimmune space heats up with third major raise in days
Prolium Bioscience's $50M launch follows Candid Therapeutics' $505M PIPE (March 2) and a broader wave of autoimmune-focused biotech raises. T-cell engagers are emerging as the dominant therapeutic approach, with multiple companies racing to prove clinical efficacy in diseases like lupus, systemic sclerosis, and myasthenia gravis. RTW Investments is making concentrated bets in this category.
VC Mood on X
Bullish signals
- Anduril at $60B sparks "defense is the new SaaS" threads: recurring government revenue with software-like margins
- Biotech autoimmune pipeline seen as genuinely transformative: "T-cell engagers could be to autoimmune what checkpoint inhibitors were to oncology"
- Construction AI gaining traction as data center buildout creates urgent demand for safety compliance tooling
- PE buying Care.com at a discount viewed as healthy market correction: "Real businesses, right prices"
Bearish signals
- $60B for a defense company with ~$1B in revenue draws valuation skepticism: "That's 60x revenue for a government contractor"
- Autoimmune biotech crowding concerns: too many companies chasing the same T-cell engager mechanism
- Care.com write-down seen as a leading indicator for other 2020-era marketplace acquisitions
- Gaxos.ai's gaming-to-defense pivot met with raised eyebrows: "You can't just slap 'defense AI' on a gaming company"
Tuesday's X discourse was dominated by the Anduril valuation report. VCs split into camps: those who see defense tech as a generational opportunity with government-guaranteed revenue, and those who think $60B for any company with ~$1B in revenue is peak exuberance. The biotech autoimmune wave generated quieter but substantive discussion, with several healthcare-focused investors noting that the clinical data from early T-cell engager trials is "genuinely exciting, not just capital-raising hype." The Care.com sale drew comparisons to other pandemic-era acquisitions facing write-downs. Overall mood: bullish but with pockets of healthy skepticism, particularly around defense tech valuations and biotech crowding.
Methodology
Data sourced from company announcements, press coverage, and social media posts via Grok analysis of X. All funding rounds include linked sources in our database. Visit individual company pages to see source URLs. X sentiment is an informal snapshot, not a quantitative index.