Draper Esprit's gross primary portfolio value increased by 44% to £162.8m in the six months to the end of September.
Net assets including goodwill totalled £266.8m compared with £150.7m at the end of March and NAV per share was 372 pence compared with 370p at the end of March.
Chief executive Simon Cook said: 'We set ourselves a financial benchmark of achieving 20% year on year growth in portfolio value in line with our historical record and are consistently achieving this.
'At the half year we have already delivered 22% growth in the portfolio and stand well positioned to deliver over the full year with significant cash balances remaining to deploy.
'Importantly, we are retaining the ability to hold and grow our companies for longer than our non-listed competitors can and with larger sums available for later rounds to maximise the opportunity and build large successful European technology businesses.
'We continue to find exciting new opportunities as technology innovation shows no sign of slowing, and our recent seed funds initiative is helping to forge key relationships at the very earliest stages.
'We are demonstrating that our model in action continues to work, with Net Asset Value growing substantially and we are on target to hit our expectations across all metrics for the year end.'
At 9:10am: (LON:GROW) Draper Esprit Plc share price was +1p at 325p