The question: How many groups have renewed their contracts without losing any members? Answer: 3.
So, how many groups renewed their contracts without losing any members?
Groups from 1996 to 2017 reviewed.
* Of the 145 boy groups that debuted in that time, 78 are inactive
* Of the 205 girl groups, **161 are inactive**
The vaaaaaast majority of girl groups that disbanded were only active around year, and I feel compelled to say that looking into the end fate of all these girl groups that got to release 1 song then disband was profoundly, *profoundly* depressing.
Continuing on, groups that were not counted:
1. Groups that announced that they are on hiatus/disbanded
2. Groups that didn't have more than 2 members
3. If there has been no any activity from them since 2018
4. If that activity was not more than a reunion special/etc
5. If they lost any member they debuted with (adding members was okay)
6. If they were inactive for a period longer than 4 years
I did not count military time as inactive/disbandment, unless the group didn't produce anything new for a significant amount of time after enlistment was finished. I also tried to be generous in general about a lack of activity during the 2020 dumpster year.
So the three standing are -
* **Nu'est** (2012): 5 members - renewed contract 2019, ends 2022
* **BTS** (2013): 7 members - renewed contract 2018, ends 2024
* **Seventeen** (2015): 13 members - renewed contract 2021, unknown length
Upcoming renewals (forgive me if some of the renewal dates are off, truly each group is unique, I did try to research but found a lot of inconsistent years):
* Red Velvet (2014): 5 members - Up for renewal 2021
* Lovelyz (2014): 8 members - Up for renewal 2021
* Twice (2015): 9 members - Up for renewal 2021
* VOISPER (2016): 4 members - up for renewal 2023. last cb 2020 https://www.youtube.com/watch?v=1BswmUwS-ik
* ASTRO (2016): 6 members - Up for renewal 2023
* Blackpink (2016): 4 members - Up to renew 2023
* Vromance (2016): 4 members - up for reneweal 2023, last cb 2021 https://www.youtube.com/watch?v=z2az_G8FnZs
* SF9 (2016): 7 members - up for renewal 2023, last cb 2020 https://www.youtube.com/watch?v=LswOtwkLEAI
* MVP (2017): 7 members - up for renewal 2024, last cb 2020 https://www.youtube.com/watch?v=Ef-BIOc3M6g
* LOONA (2017): 12 members - 2023 OR 2024 (solos 2016, group 2017)
* A.C.E (2017): 5 members - up for renewal 2024, last cb 2021 https://www.youtube.com/watch?v=kpP4vMnrQHQ
* IZ (2017): 4 members - up for renewal 2024, last cb 2020 https://www.youtube.com/watch?v=NEOxT7UzWB0
* ELRIS (2017): 7 members - up for renewal 2024, last cb 2020 https://www.youtube.com/watch?v=iPAIlZM1VUU
* FAVORITE (2017): 6 members - up for renewal 2024, last cb 2020 https://www.youtube.com/watch?v=lE1X2U1sBFg
* Weki Meki (2017): 8 members - up for renewal 2024
Sources for BH groups, I'm going to take Gfriend end date as 2021 as confirmation that this source is accurate, since many were taken off guard by that. https://taekooktimeline.tumblr.com/post/633730834104549376/where-are-people-getting-that-bts-contract-got
* g.o.d (1999): 5 members - Kyesang left the group for 2 albums. Since then they've reunited with all 5 members, last cb 2019 https://www.youtube.com/watch?v=SvnwyzS5uM4
* Epik High (2003): 3 members - eventually broke their contract, but stayed a group and signed on with a new company. Steady output of work with a slight bump for enlistment, last cb 2021 https://www.youtube.com/watch?v=0CS8qFgFHxU
* V.O.S. (2004): 3 members - Jiheon left the group in 2010 but rejoined in 2015, last cb 2020 https://www.youtube.com/watch?v=RONtJr4VxjI
* SHINee (2008): 4 active members, 1 eternal member
* GOT7 (2014): 7 members, stayed as a group but broke their contract.
* Mamamoo (2014): 4 members, Wheelin did not renew her contract but agreed to remain a member of Mamamoo until 12/2023
* NCT (2016): 21 members - members were brought in at different times and have different renewal dates. Assuming a 7 year contract, the first wave will be up 2023.
* VICTON (2016): 7 members, Seungwoo joined X1 for some time then rejoined.
* The Rose (2017): 4 members - stayed together as a group went independent and broke their contract, currently enlisted, last cb 2019 https://www.youtube.com/watch?v=Ru8LG-_HGd4
* Dreamcatcher (2017): 7 members - currently active but announced they're ending their contract 8/21
If you want to review the groups yourself, feel free to point out if I missed something because my eyes started crossing as I was working on this: https://docs.google.com/spreadsheets/d/1n_ESbC1W4TIAFfDDk_DuyllG9B3XGbqPyXPkzFFzXfc/edit#gid=1965691637 (always a work in progress so it might look rough)