best mid cap stocks march 2026 to may 2026

Agilon health (AGL) had the highest return between March 1, 2026 and May 31, 2026 by a mid-cap US stock, returning 559.4%.

ASSETDATE% RETURN
agilon health (AGL)
3/1/2026 - 5/31/2026
559.38%
P3 Health Partners (PIII)
3/1/2026 - 5/31/2026
471.83%
MaxLinear (MXL)
3/1/2026 - 5/31/2026
446.65%
Bandwidth (BAND)
3/1/2026 - 5/31/2026
353.07%
Navitas Semiconductor (NVTS)
3/1/2026 - 5/31/2026
211.29%
Uniqure (QURE)
3/1/2026 - 5/31/2026
210.45%
SharonAI Holdings, Inc Class A Common Stock (SHAZ)
3/1/2026 - 5/31/2026
203.32%
Himax Technologies (HIMX)
3/1/2026 - 5/31/2026
190.13%
Vishay Intertechnology (VSH)
3/1/2026 - 5/31/2026
186.06%
Intuitive Machines (LUNR)
3/1/2026 - 5/31/2026
175.49%
Penguin Solutions (PENG)
3/1/2026 - 5/31/2026
175.43%
Redwire (RDW)
3/1/2026 - 5/31/2026
171.79%
BlackBerry (BB)
3/1/2026 - 5/31/2026
171.08%
Bitfarms (KEEL)
3/1/2026 - 5/31/2026
166.04%
Ouster, Inc Common Stock (OUST)
3/1/2026 - 5/31/2026
157.12%
Innodata (INOD)
3/1/2026 - 5/31/2026
153.21%
Firefly Aerospace Inc Common Stock (FLY)
3/1/2026 - 5/31/2026
151.3%
AXT (AXTI)
3/1/2026 - 5/31/2026
147.21%
Aehr Test Systems (AEHR)
3/1/2026 - 5/31/2026
137.17%
Bitdeer Technologies Group Class A Ordinary Shares (BTDR)
3/1/2026 - 5/31/2026
135.4%
Xometry (XMTR)
3/1/2026 - 5/31/2026
135.28%
Plug Power (PLUG)
3/1/2026 - 5/31/2026
129.65%
Navan, Inc Class A Common Stock (NAVN)
3/1/2026 - 5/31/2026
122.14%
Silicon Motion Technology (SIMO)
3/1/2026 - 5/31/2026
121.15%
Iridium Communications (IRDM)
3/1/2026 - 5/31/2026
120.93%
Mid-cap stocks are treated as having a market cap between $2B and $10B.