September 2026 Funding: $5.2B in 10 Startup Deals

Data Centers Dominate with Record Raise

The largest deal tracked this week was Crusoe's $3.9B venture round in the data centers sector. This single transaction accounted for the majority of the $5.2B total across all 10 raises. Investors focused on data centers infrastructure as demand continues to rise for scalable computing resources.

Other Technology Sector Attracts Multiple Rounds

Other technology companies secured six of the ten deals. SIERRA INTERNATIONAL NETWORK INC closed a $502.0M private placement. Stuut, Inc. raised $67.6M through private placement. Twin Health, Inc. completed a $59.0M private placement. Incode Technologies, Inc. obtained $37.0M in private placement funding. Ironsite AI Inc. secured $30.8M via private placement. These rounds highlight sustained interest in diverse technology applications outside core data centers.

Manufacturing and Other Energy Rounds Advance

Crucible Topco, L.P. raised $96.4M in a manufacturing private placement. In other energy, Whisper Aero Inc. closed a $46.3M private placement. These deals demonstrate targeted capital deployment into specialized industrial and energy technologies.

Additional Raises Across Health and Security

Evvy completed a $40.0M Series B round focused on women's health. Comp AI raised $34.0M in a Series A cybersecurity round. Combined with the larger transactions, the ten deals reflect broad sector coverage within the week's $5.2B total.

The week of September 21 2026 showed concentrated capital in data centers alongside steady activity in other technology, manufacturing, and energy.