Quantitative Finance / Q-Fin.RM

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Losing money with a high Sharpe ratio

Losing money with a high Sharpe ratio

์ด ๋…ผ๋ฌธ์€ ํˆฌ์ž ์„ฑ๊ณผ ์ธก์ • ์ง€ํ‘œ์ธ ์ƒคํ”„ ๋น„์œจ์˜ ํ•œ๊ณ„๋ฅผ ํƒ์ƒ‰ํ•˜๊ณ , ๋†’์€ ์ƒคํ”„ ๋น„์œจ์—๋„ ๋ถˆ๊ตฌํ•˜๊ณ  ํฌํŠธํด๋ฆฌ์˜ค๊ฐ€ ์†์‹ค์„ ๋ณผ ์ˆ˜ ์žˆ๋Š” ์ƒํ™ฉ์„ ๋ถ„์„ํ•ฉ๋‹ˆ๋‹ค. ์ด๋Š” ํˆฌ์ž์ž๋“ค์ด ๋‹จ์ˆœํžˆ ์ƒคํ”„ ๋น„์œจ๋งŒ์œผ๋กœ ์„ฑ๊ณผ๋ฅผ ํŒ๋‹จํ•˜์ง€ ์•Š๊ณ , ์‹ค์ œ ์ž๋ณธ์˜ ๋ณ€ํ™”์™€ ๊ฐ™์€ ๋‹ค๋ฅธ ์š”์†Œ๋“ค์„ ํ•จ๊ป˜ ๊ณ ๋ คํ•ด์•ผ ํ•จ์„ ๊ฐ•์กฐํ•˜๋Š” ์ค‘์š”ํ•œ ์—ฐ๊ตฌ์ž…๋‹ˆ๋‹ค. 1. ์ƒคํ”„ ๋น„์œจ์˜ ๊ธฐ๋ณธ ์ดํ•ด ์ƒคํ”„ ๋น„์œจ์€ ํˆฌ์ž ํฌํŠธํด๋ฆฌ์˜ค์˜ ์ˆ˜์ต๋ฅ ์ด ์œ„ํ—˜์— ๋Œ€ํ•œ ๋ณด์ƒ์œผ๋กœ ์–ผ๋งˆ๋‚˜ ๋†’๊ฒŒ ๋‚˜ํƒ€๋‚˜๋Š”์ง€๋ฅผ ์ธก์ •ํ•ฉ๋‹ˆ๋‹ค. ์ด๋Š” ๋‹จ์œ„ ์œ„ํ—˜๋‹น ์ˆ˜์ต๋ฅ ์„ ์˜๋ฏธํ•˜๋ฉฐ, ์ผ๋ฐ˜์ ์œผ๋กœ ๋ฌด์œ„ํ—˜ ๊ธˆ๋ฆฌ๋ฅผ ๋ฒค์น˜๋งˆํฌ๋กœ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค. ๋…ผ๋ฌธ์—์„œ๋Š” ๋ฒค์น˜๋งˆํฌ๋ฅผ 0์œผ๋กœ

Quantitative Finance

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