- X4 Pharmaceuticals, Inc (XFOR)
- XBiotech Inc. (XBIT)
- XBP Global Holdings, Inc. (XBP)
- XCel Brands, Inc. (XELB)
- XCEL ENERGY INC (XEL)
- XCF Global, Inc. (SAFX)
- XChange TEC.INC (XHG)
- XCHG Ltd (XCH)
- Xencor Inc (XNCR)
- Xenetic Biosciences, Inc. (XBIO)
- Xenon Pharmaceuticals Inc. (XENE)
- Xeris Biopharma Holdings, Inc. (XERS)
- Xerox Holdings Corp (XRX)
- X Financial (XYF)
- Xiao-I Corp (AIXI)
- Xilio Therapeutics, Inc. (XLO)
- XINXU COPPER INDUSTRY TECHNOLOGY Ltd (XXC)
- XMax Inc. (XMAX)
- XOMA Royalty Corp (XOMA)
- Xometry, Inc. (XMTR)
- XORTX Therapeutics Inc. (XRTX)
- Xos, Inc. (XOS)
- XPEL, Inc. (XPEL)
- Xperi Inc. (XPER)
- XP Inc. (XP)
- XPLR Infrastructure, LP (XIFR)
- XPO, Inc. (XPO)
- Xponential Fitness, Inc. (XPOF)
- Xtant Medical Holdings, Inc. (XTNT)
- XTI Aerospace, Inc. (XTIA)
- XTL BIOPHARMACEUTICALS LTD (XTLB)
- Xunlei Ltd (XNET)
- XWELL, Inc. (XWEL)
- Xylem Inc. (XYL)