The Mega-Round Index Q1 2026: $100M+ Israeli Tech Financings
Eleven mega-rounds drove 53% of total Israeli tech funding in Q1 2026. Inside the concentration: $4.3 billion raised across 137 deals — the lowest deal count since 2018 — and what the index reveals about where capital is actually going.
Israeli tech raised $4.3 billion in Q1 2026, according to Startup Nation Central's Q1 2026 Ecosystem Report — an 18% year-over-year increase across only 137 disclosed deals, the lowest deal count since 2018. IVC Data and Insights, accounting for undisclosed rounds, places the figure at approximately $4 billion across an estimated 225 financings.
The headline numbers obscure the actual structure. Eleven mega-rounds — each $100 million or larger — drove 53% of total Q1 2026 funding. The top decile of all rounds absorbed 51% of all capital raised. Series B and C rounds, the traditional middle of the growth-equity stack, captured only 29% of total funding, continuing a multi-quarter trend of mid-stage compression.
The Mega-Round Index
The Olam Mega-Round Index tracks every disclosed Israeli technology financing of $100 million or more, with quarterly snapshots covering size, lead investor, sector, valuation, and stage. The index is a structural measurement — not a ranking — designed to make visible the concentration that aggregate fundraising statistics flatten.
Across calendar year 2025, Israeli tech companies completed 24 mega-rounds totaling roughly $6.5 billion, led by Cyera's combined $940 million across two rounds (May and December 2025), Armis at $435 million, Cato Networks at $359 million, and Deel at $300 million. Nine of those rounds exceeded $200 million. Cybersecurity and generative AI together absorbed roughly 70% of all 2025 mega-round capital, with the median mega-round valuation at $2.4 billion.
The Q1 2026 composition
The eleven Q1 2026 mega-rounds skew sharply toward three categories: data security and identity, AI infrastructure, and agentic AI platforms. Defense-tech, which spiked above 8% of total Israeli funding in 2025 on the back of post-October 7 procurement, dropped below 1% in Q1 2026 — a reversion that reflects deal timing rather than category cooling.
Foreign investor participation reached a record. 74% of all Q1 2026 rounds included a global investor, with foreign investors accounting for 65.9% of total fundraising — though that share is gradually declining as local funds take a slightly larger role in early rounds. American Tier-1 firms — Sequoia, Benchmark, Lightspeed, Insight Partners, Coatue, Tiger Global — continue to anchor the late-stage Israeli pipeline. NVIDIA emerged as a meaningful corporate strategic, joining the Decart AI $300 million round at a $4 billion valuation alongside Radical Ventures.
The structural pattern
The Q1 2026 data confirms a pattern visible across 2024 and 2025: fewer rounds, larger checks, deeper specialization. Israeli companies raising $10–75 million seed rounds at $100M+ post-money valuations have become routine in cyber and AI — a profile incompatible with the European seed playbook ($3–5 million in Berlin or Stockholm) and increasingly distinct even from US benchmarks outside the Bay Area.
The implication for the founder population is bifurcated. Capital is available — especially in cyber, AI infrastructure, and agentic platforms — to companies that can command a mega-round. Mid-stage companies, particularly those requiring international business development travel during a reservist environment, face genuine headwinds the aggregate numbers conceal.
Where the index breaks
The Mega-Round Index measures disclosed transactions. It does not capture stealth rounds, recapitalizations, secondary transactions, or the Cyera-style "two rounds in six months" pattern that distorts category-level comparisons. It also does not capture employee secondary sales — a growing component of late-stage Israeli rounds. Cato Networks' $359 million Series G in 2025 included approximately one-third in employee secondary, providing partial liquidity ahead of a delayed IPO.
The index also flatters the headline. A single $1 billion round — Vast Data's April 2026 financing at a $30 billion valuation, occurring outside the Q1 window — can move quarterly totals by 20%+ on its own. Concentration produces volatility. The structural story is more durable than any single quarter.
What the index will track in 2026
Three quarterly indicators frame the rest of 2026:
- The persistence of the 11-deal ceiling. If mega-round count holds at ten to twelve per quarter through Q4, the year ends near 45 mega-rounds — roughly double the 2025 pace, with concentration intensifying further.
- The defense-tech revert. The Q1 reversion below 1% is implausibly low. The 2025 baseline above 8% returns once Ministry of Defense procurement cycles re-engage.
- The pre-IPO pipeline. Cato, Cyera, Sweet, Armis (pre-ServiceNow close), and several other late-stage names are positioned for 2026–2027 public market entries. Mega-round activity at this tier directly feeds the next IPO cohort.
The Mega-Round Index will publish quarterly through 2026 with full disclosure of methodology, sources, and exclusions.
