The Full Picture of Q2 2025 Venture Funding Driven by AI and Mega-Rounds

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The second quarter (April–June) of 2025 was another quarter that saw blockbuster capital inflows in the global venture capital market. While funding amounts increased year-over-year, capital became even more concentrated in mega-rounds. In particular, the generative AI and data infrastructure sectors drove fundraising, with a series of record-breaking deals. This article organizes the trends in total funding, sector and regional developments, the boom in M&A, and capital flows by stage, while providing an outlook for the future.

1. Overview of Global Venture Funding

1-1. Q2 2025 Total Amount and Fluctuations

• Total funding was $91 billion USD. This is an increase of approximately 11% compared to the same period last year ($82 billion).

• However, this is a decrease of approximately 20% from the previous Q1 ($114 billion), showing a sense of cooling from the peak seen since Q3 2022.

1-2. Concentration of Capital in Mega-Rounds

• Approximately 30% of total Q2 funding flowed into 16 deals of $500 million or more.

• The largest was Scale AI's $14.3 billion round. This was a historic scale, second only to OpenAI's $40 billion round in Q1.

2. Breakthroughs in the AI Sector

2-1. Blockbuster Quarter

• Approximately $40 billion (45% of the total) was invested in AI-related areas, continuing a streak of record-breaking results over the past three quarters.

• In particular, generative foundation model companies raised $5.5 billion, with Thinking Machines Lab and Safe Superintelligence each conducting $2 billion seed rounds.

2-2. Major Round Examples

• Anduril Industries: $2.5 billion

• Grammarly: $1 billion

• Anysphere: $900 million

• Helsing: $694 million

These applications range from AI research and development to applied infrastructure, security, and generative text, reflecting high market expectations.

3. Funding Trends by Sector

3-1. Healthcare and Biotech

• With $14.8 billion raised, it became the second-largest sector. Capital flowed broadly into drug discovery, medical devices, and digital health.

3-2. Financial Services

• Raised $10.8 billion, ranking third. The focus was on fintech-related startups, digital payments, and asset management tools.

4. Regional Trends

• U.S. companies accounted for approximately two-thirds of the total, at $60 billion.

• While mega-rounds remain prominent, centered in Silicon Valley and New York, there is also an increasing trend of promising startups in Europe and Asia.

5. Semi-Annual and Annual Comparisons

• In the first half (H1) of 2025, a total of $205 billion was raised, a 32% increase compared to the same period last year.

• Approximately 34% ($70 billion) of H1 funding was concentrated in 11 companies that raised $1 billion or more, with mega-rounds driving the market.

6. M&A Activity

6-1. Q2 M&A Volume

• reported over $50 billion in startup M&A deals, the second-highest level since 2021.

• Although it decreased from Q1 ($71 billion), it remains at a high level.

6-2. OpenAI's Acquisition Strategy

• In Q2, OpenAI acquired four companies, including Io (formerly the Apple design team, $6 billion) and Windsurf ($3 billion).

• Of the 18 over $1 billion M&A deals, half were by public companies, three were by PE firms, and six were by venture-backed companies themselves.

7. Funding Flow by Stage

7-1. Late-stage

• Total funding reached $55 billion, a 53% increase year-over-year. While this is a decrease of approximately 30% from Q1, large deals continue to drive the market.

7-2. Early-stage

• $26 billion was raised by 1,600 companies, remaining flat quarter-over-quarter. While volume is maintained, the trend toward larger deal sizes has paused.

7-3. Seed

• Reached a record high of $10.3 billion. The round for Thinking Machines Lab, which raised $2 billion, accounts for approximately 20% of the total.

• Excluding this, seed funding remained flat and saw a slight decrease year-over-year.

8. Future Outlook

While the concentration of capital in AI and large rounds has become clear over the last three quarters, there is still a 'floor' of funding at the early and seed stages, supporting the depth of the overall market. M&A activity is also intensifying, approaching the peak levels of 2021. Looking toward the second half of 2025, key points to watch will be the monetization of AI products, progress in the commercialization of the healthcare sector, and the rise of regions outside of the US and Europe.

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