Yoon Jae-sung

Senior Research Fellow, Hana Securities Research Center

tracked since Jan 2026

Yoon Jae-sung (윤재성) is a senior research fellow (수석연구위원) at the Research Center of Hana Securities, where he covers energy and chemicals, including oil refining, petrochemicals, LNG and solar. A business administration graduate of Yonsei University, he previously worked at KTB Investment & Securities, Taurus Investment & Securities and Daishin Securities, and was ranked among the best analysts in the Maeil Business Newspaper and Hankyung Business polls between 2014 and 2025. He is a recurring guest on Double Up (더블 업), part of 3PRO TV's morning Double Value-Up block, where he discusses oil prices, refiners and the reshaping of global energy markets.

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Horizon	7D	30D	90D	180D	360D	AVG
Rank	#378	#90	#47	#73	—	#34
Calls	43	43	38	36	0/10	43
Avg return	+0.5%	+4.3%	+14.1%	+18.8%	—	+11.4%
vs S&P 500	+0.6 pp	+5.1 pp	+12.4 pp	+11.1 pp	—	+9.2 pp

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Yoon Jae-sung has 41 trade ideas tracked on Buzzberg across 40 tickers since January 2026. Win rate 66% across 41 evaluated calls, average return +20.6%. Ranked #90 on Buzzberg's 30-day Authors leaderboard. Most covered: 010950.KS, 096770.KS, 010060.KS.

Historical call returns are modeled from recorded ideas and stored prices, not actual brokerage portfolio returns. Check the evaluated call set and horizon; past results do not establish future prediction accuracy. Explore our data and methodology