Investment data from Pitchbook 216 is indicative of growing commercial interest in CNTs over the last decade (Figure ). In terms of geographical distribution, almost half of the capital invested (45%) between 2013-2023 appears to be in 82 companies located in the USA (Figure ), followed by China. Luxembourg (LUX) accounts for 12% of capital invested, which can be attributed to OCSiAl, largest known manufacturer of commercially available CNTs (Tuball). Other countries/regions showing commercial interest in CNTs include South Korea, Finland (FIN), the United Kingdom, Australia (AUS), Israel (ISR), Canada and Japan.