Unitholders have passed the proposed merger of the Liontrust FTSE 100 Tracker fund into the UK Growth fund.
Liontrust Asset Management held an EGM on 19 October, where unitholders approved the merger, which will take place on 25 October.
If the extraordinary resolution for the merger was not passed, then Liontrust would have sought approval from the Financial Conduct Authority to terminate the Liontrust FTSE 100 Tracker fund.
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Simon Hildrey, chief marketing officer at Liontrust, commented: "The proposed merger of the Liontrust FTSE 100 Tracker fund into the Liontrust UK Growth fund was successfully approved by unitholders at the EGM held at 10.45am on 19 October.
"The FTSE 100 Tracker was the first fund launched by Liontrust in 1995; this fund is now an anomaly, the only index tracker in our fund range.
"We believe in and are committed to the benefits of active fund management over the long term and, following a review of our fund range, we are offering investors the opportunity to move from the tracker into Liontrust UK Growth.
"We believe this to be the most suitable option for investors to be merged into given its large-cap UK equity focus - which is similar to that of the FTSE 100 Tracker - and its track record."
The £41.4m tracker fund was launched in 1995 and aims to match the performance of the FTSE 100 by replicating the companies and their weightings.
Meanwhile, the £298m Liontrust UK Growth fund, which launched in 1993 and has been managed by Anthony Cross and Julian Fosh since March 2009, mainly invests in UK large- and mid-cap stocks using the firm's proprietary 'economic advantage' investment process.
Over three years, the UK Growth fund has returned 32.4% against the 20% average return of the IA UK All Companies sector, FE data shows.