0 for 3 so far, but it's still early days.
From https://en.wikipedia.org/wiki/LK-99
Group
Country
Status
Result
References
Notes
Huazhong University of Science and Technology
China
Results unavailable
2023-08-01: Video claiming to show diamagnetism of small (< 0.1 mm) flakes of LK-99.
Reportedly making a new batch to measure resistance.
[34][37][38][39]
Post-doctoral Wu Hao, Doctoral Yang Li, Professor Chang Haixin. Video posted to bilibili, no official announcement.
Beihang University
China
Preliminary results available
No diamagnetism observed. LK-99 sample had high resistivity not consistent with superconductivity.
[40][41]
Li Liu, et al. arXiv.
Council Of Scientific And Industrial Research - National Physical Laboratory of India (CSIR-NPLI)
India
Preliminary results available
Structure confirmed by XRD. No diamagnetism observed.
[40][27]
Kapil Kumar, et al. Verified authors,[42][43][39] arXiv.
Southeast University
China
Preliminary results available
No diamagnetism or levitation observed.
[44][36]
Prof. Sun Yue, et al.
Argonne National Laboratory
United States
Unknown
—
[45]
Sungkyunkwan University
South Korea
Unknown
—
[30]
Korea University
Unknown
—
Seoul National University
Unknown
—
Varda Space Industries & University of Southern California
United States
Unknown
—
[46][47][39]
Engineer & entrepreneur on X and Twitch. Resulting samples due to be analysed by University of Southern California after production.