Fidelity International's biggest equity fund in Japan is betting technology companies will help boost the nation's stock market in 2020.

The asset manager's Japan Growth Fund is up 29 percent this year, beating almost all of its peers, according to Bloomberg data. The fund has managed to stay ahead of the annual gains of Japan's equity benchmarks most of the year.

Fidelity International's $3.7 billion fund attributes 2019's success to investments in growth stocks such as electronics and machinery makers. It expects 2020 to be another solid year, with the Nikkei 225 stock average rising an additional 5 percent from current levels.