best performing stocks last week mid cap

89bio (ETNB) had the highest return last week by a mid-cap US stock, returning 83.4%.

ASSET WEEK % RETURN
89bio (ETNB)
9/15/2025 - 9/21/2025
83.35%
D-Wave Quantum (QBTS)
9/15/2025 - 9/21/2025
51.86%
WEBTOON Entertainment Inc Common stock (WBTN)
9/15/2025 - 9/21/2025
49.02%
Plug Power (PLUG)
9/15/2025 - 9/21/2025
40.19%
Qilian International (BGM)
9/15/2025 - 9/21/2025
36.78%
Pony AI Inc American Depositary Shares (PONY)
9/15/2025 - 9/21/2025
36.52%
Quantum Computing  (QUBT)
9/15/2025 - 9/21/2025
35.13%
Quantumscape (QS)
9/15/2025 - 9/21/2025
33.53%
BigBearai (BBAI)
9/15/2025 - 9/21/2025
32.24%
Centrus Energy (LEU)
9/15/2025 - 9/21/2025
32.24%
CleanSpark (CLSK)
9/15/2025 - 9/21/2025
31.15%
Energy Fuels (UUUU)
9/15/2025 - 9/21/2025
24.46%
Nuscale Power (SMR)
9/15/2025 - 9/21/2025
23.76%
Enovix (ENVX)
9/15/2025 - 9/21/2025
22.75%
Peabody Energy (BTU)
9/15/2025 - 9/21/2025
22.35%
PACS (PACS)
9/15/2025 - 9/21/2025
21.4%
SolarEdge Technologies (SEDG)
9/15/2025 - 9/21/2025
20.35%
LYFT (LYFT)
9/15/2025 - 9/21/2025
19.92%
Acm Research (ACMR)
9/15/2025 - 9/21/2025
19.87%
Sandisk (SNDK)
9/15/2025 - 9/21/2025
19.82%
Upwork (UPWK)
9/15/2025 - 9/21/2025
19.04%
Sitime (SITM)
9/15/2025 - 9/21/2025
18.38%
Solaris Energy Infrastructure (SEI)
9/15/2025 - 9/21/2025
18.03%
Brighthouse Financial (BHF)
9/15/2025 - 9/21/2025
17.96%
DRDGOLD Limited ADR (DRD)
9/15/2025 - 9/21/2025
17.17%
Mid-cap stocks are treated as having a market cap between $2B and $10B.