According to the Financial Conduct Authority, Fundsmith registered the Fundsmith Sustainable Equity fund on 7 September under the Ucits structure as an investment company with variable capital.
With base details only available at this early stage of its life and Fundsmith declining to disclose any further information to Wealth Manager, it is unclear what exactly the fund will invest in.
However, its branding offers a big sign that it will target companies with positive influences on the environment and society.
It is also not clear who will run the fund but given the relatively small size of the firm's investment team, it is likely Citywire AAA-rated Smith (pictured) will play a major role.
Earlier this year Wealth Manager revealed Smith had relocated to Mauritius, meaning he will be spending less than six months a year in the UK.
Speaking at a conference before the move, Smith described Mauritius as 'very well placed as a financial centre due to a combination of factors. In terms of time zone it is well placed for dealing in Asian markets'.
The Sustainable Equity fund will add diversification to one of the consistently best selling investment firms in the UK.
It will sit alongside the open ended Fundsmith Equity fund, which has amassed £12 billion worth of assets since its launch in November 2010.
Its popularity has come on the back outstanding performance, with the find returning 246.9% since its inception versus a 129.2% gain in the MSCI World Index.
Over three years to August the fund is the second best performer in the peer group, returning 98.6% versus an average of 46.8% in the sector.
The firm also operates the closed ended £284.5 million Fundsmith Emerging Equities Trust (FEET), which launched just over three years ago.
FEET has failed to hit the dizzy heights of its open ended counterpart, with its net asset value rising by 15.5% over the last three years versus a 34.7% average in the peer group.