年初 ねんしょ らい高値 たかねでしょう
nenshora itakanedeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 年初来高値

1. Probably high since the beginning of the year.; Likely at a high since the beginning of the year.

Polite
Presumptive
Conjecture