股
gǔ · HSK 6
stock
📊 股 = thigh; also a share/portion (as in 股票 stock share)
Original sense is thigh or upper leg, a body part. By extension it became a measure word for a strand, share, or portion — hence 股票 stock share and 一股 one whiff/strand.
股 — meat/flesh 月 (肉) + weapon 殳
Originally a semantic-phonetic compound: 月 (a form of 肉 'flesh') gives the meaning of a body part — the thigh — while 殳 hints at the sound. The thigh meaning extended to 'section' or 'portion,' and from there to modern senses like a strand of something or a share of stock.