FSMEX is a health care fund, but travels the technology/medical devices path.
I don't know how fresh is this close, but I don't recall seeing any notice a few weeks ago while looking at things within Fidelity. Anyway, from recall in 2018; I do believe the size of this fund moved from about $4.6 billion to almost $7 billion now, in less than 1 years time.
I'll get back here with a handy-dandy chart of this fund and related. The charting is not being cooperative right now.