In the big data analysis of idol group brand reputation for October 2025, BTS ranked first. IVE and SEVENTEEN took second and third place, respectively. The Korea Corporate Reputation Research Institute analyzed data from September 14 to October 14, 2025, extracting a total of 85,971,791 idol group brand big data entries. This represents a 13.17% increase compared to 75,966,777 entries in September.

The brand reputation index reflects the impact of consumers' online behavior on brand consumption. It is used to measure positive and negative evaluations of idol group brands, media attention, consumer communication volume, and more. This analysis also included qualitative evaluations from the Brand Reputation Monitor. The idol group brand reputation is analyzed by integrating boy groups and girl groups, measuring consumer participation index, media index, communication index, and community index.

The top 30 idol group brand reputation rankings for October 2025 are as follows: 1st BTS, 2nd IVE, 3rd SEVENTEEN, 4th BLACKPINK, 5th Red Velvet, 6th TWICE, 7th BIGBANG, 8th CORTIS, 9th Stray Kids, 10th EXO, 11th LE SSERAFIM, 12th NCT, 13th SHINee, 14th aespa, 15th ENHYPEN, 16th KIKI, 17th RISE, 18th THE BOYZ, 19th ZEROBASEONE, 20th fromis_9, 21st LISSNE, 22nd Super Junior, 23rd ATEEZ, 24th TOURS, 25th ALPHADRIVEONE, 26th (G)I-DLE, 27th IZ*ONE, 28th ITZY, 29th BTOB, 30th Apink.

BTS's brand reputation index was analyzed at 7,738,515, an 80.99% increase compared to 4,275,545 in September. BTS's participation index was 173,950, media index 664,931, communication index 2,199,865, and community index 4,699,769.

IVE ranked second with a brand reputation index of 4,824,596. Their participation index was 227,164, media index 348,572, communication index 1,911,675, and community index 2,337,185. This is a 12.19% decrease compared to 5,494,386 in September.

SEVENTEEN ranked third with a brand reputation index of 4,640,599. Their participation index was 181,104, media index 379,818, communication index 1,263,739, and community index 2,815,939. This is a 31.03% increase compared to 3,541,721 in September.

BLACKPINK ranked fourth with a brand reputation index of 4,001,522. Their participation index was 122,990, media index 364,078, communication index 963,248, and community index 2,551,205. This is a 16.87% decrease compared to 4,813,295 in September.

Red Velvet ranked fifth with a brand reputation index of 2,978,329. Their participation index was 54,086, media index 279,097, communication index 791,457, and community index 1,853,689. This is a 14.30% increase compared to 2,605,705 in September.

Koo Chang-hwan, director of the Korea Corporate Reputation Research Institute, stated, "BTS ranked first in the October 2025 idol group brand reputation rankings. The big data for the idol group brand category increased by 13.17%. Detailed analysis shows that brand consumption rose by 8.06%, brand issues decreased by 6.97%, brand communication decreased by 5.26%, and brand diffusion increased by 32.61%."

He also added, "In BTS's link analysis, 'donate, celebrate, collaborate' recorded high scores, and in keyword analysis, 'Spring Day, ARMY, fan concert' stood out. The positive ratio was analyzed at 92.24%."

The big data analysis of idol group brand reputation for October 2025 covered BTS, IVE, SEVENTEEN, BLACKPINK, Red Velvet, TWICE, BIGBANG, CORTIS, Stray Kids, EXO, LE SSERAFIM, NCT, SHINee, aespa, ENHYPEN, KIKI, RISE, THE BOYZ, ZEROBASEONE, fromis_9, LISSNE, Super Junior, ATEEZ, TOURS, ALPHADRIVEONE, (G)I-DLE, IZ*ONE, ITZY, BTOB, Apink, Oh My Girl, Kiss of Life, ILY:1, MAMAMOO, Wanna One, WJSN, INFINITE, Hearts to Hearts, AHOB, MONSTA X, VERIVERY, TripleS, TREASURE, HIKEY, EVEN, BABYMONSTER, NMIXX, BoyNextDoor, CATS EYE, and Fifty Fifty.