Portfolio map · Investment firm · United States

33 startups Square 1 Bank has backed in rounds we track, since 2007, grouped by their main sector. Together they have raised $2.9B. The biggest sector is Biotech, with 16 companies.
4 without a founding year on record.
Each dot is a startup: the year it was founded across, the total it has raised up (each line is ten times the one below). Pick a segment to pick it out.
29 of 33 startups shown; the rest have no founding year or amount on record.
Startups by country, 1 country in all.
16 startups · $1.7B raised
5 startups · $254M raised
5 startups · $211M raised
4 startups · $666M raised
3 startups · $68M raised
How this map is made. Every startup here has raised money in a round we track that names Square 1 Bank as an investor, the first in 2007. Each sits under its main sector, read from its rounds, and each sector shows its best-funded first; sectors with fewer than three companies are left off. Rebuilt nightly; updated 15 November 2026.
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