The Biggest Startup Capital Raises - Week 38, 2026 (SEC Form D)

60 operating-company raises totalling $9.9B surfaced in SEC Form D filings (September 17-18, 2026). The top 10, ranked - days before the press.

Every week, companies quietly disclose fresh capital raises in SEC Form D filings - often days before (and frequently without) any press coverage. We pull the filings straight from EDGAR, filter out pooled investment funds (the hedge/PE/VC noise that makes up most Form D volume), and rank what is left: the real operating-company startup-funding signal.

This window (September 17-18, 2026): 60 qualifying raises, $9.9B in disclosed capital.

Top 10 by amount raised

# Company Sold to date Industry State Score
1 Alliant Holdings, L.P. $5.2B Other Connecticut 96
2 Crusoe Inc. $3.1B Other Colorado 100
3 Crusoe Inc. $595.9M Other Colorado 99
4 ISQ Open Infrastructure Co LLC $339.3M Other Florida 89
5 Starc Acquisitions, Inc. $117.1M Other California 100
6 Trimtab Impact Inc. $52.0M Other NEW YORK 96
7 Ironsite AI Inc. $30.8M Other Technology California 83
8 XN Companies Inc. $30.5M Insurance NEW YORK 83
9 Xpect Solutions Parent Holdings LLC $29.5M Other Pennsylvania 83
10 Gravitics, Inc. $28.6M Other Technology Washington 69

Score = size × freshness × type (0-100). Every row in the full report links to the original SEC filing.

The headline raise: Alliant Holdings, L.P.

Alliant Holdings, L.P. reported $5.2B raised across 657 investors (Other, Connecticut). Disclosed executives / related persons include None Wayne General Partner, LLC, James Carey, Thomas Corbett. As always with Form D: amounts are self-reported by the issuer, and a filing is a disclosure - not an endorsement.

Get the full picture

Data source: official SEC EDGAR Form D. This is data and research, not investment advice.


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