October 23, 2026 at 12:05 PM

Pre-Market Movers: YMAT, XXII, LUCD Lead the Small-Cap Scan

YMAT led a group of 8 active small-cap stocks flagged for editorial review.

Pre-market movers roundup

J-Star Holding Co., Ltd. (YMAT) led the latest pre-market scan, gaining approximately 57.1%. The table below ranks the leading qualifying movers captured in the latest snapshot.

Top 8 Pre-Market Movers

Scanner snapshot captured 2026-10-23T12:00:03.448Z.

#TickerCompanyMovePriceVolumeMarket Cap
1YMATJ-Star Holding Co., Ltd.+57.1%$3.024,435,966$7.7M
2XXII22nd Century Group, Inc+54.1%$0.3324109,351,868$154,009
3LUCDLucid Diagnostics Inc.+27.2%$0.416832,756,429$66.6M
4SAIQWISeSat.Space Holdings Corp.+25.4%$6.621,119,230$157.4M
5GPUSHyperscale Data, Inc.+22.1%$0.153883,012,789$24.2M
6BKYIBIO-key International, Inc.+12.4%$3.082,198,115$5.6M
7CJMBCallan JMB Inc.+11.9%$0.58288,361,417$3.0M
8STAKSTAK Inc.+11.4%$1.864,112,369$16.7M

What’s Driving the Moves

YMAT — J-Star Holding Co., Ltd.

YMAT gained approximately 57.1% in the scanner snapshot. A possible catalyst was J-Star Holding Advances U.S. Drone Manufacturing Plans With Houston Facility Acquisition Negotiations. The headline should be verified against the original source before publication.

XXII — 22nd Century Group, Inc

XXII gained approximately 54.1% in the scanner snapshot. A possible catalyst was 22nd Century Group Preliminarily Reports Third Quarter Financial Results. The headline should be verified against the original source before publication.

LUCD — Lucid Diagnostics Inc.

LUCD gained approximately 27.2% in the scanner snapshot. A possible catalyst was Lucid Diagnostics Begins Receiving Medicare Reimbursement for EsoGuard® and Closes $15 Million Financing. The headline should be verified against the original source before publication.

SAIQ — WISeSat.Space Holdings Corp.

SAIQ gained approximately 25.4% in the scanner snapshot. A possible catalyst was WISeSat.Space and SEALSQ Advance Satellite Cybersecurity Hardening as FOSSA Launches New 6U Satellite Aboard SpaceX Falcon 9. The headline should be verified against the original source before publication.

GPUS — Hyperscale Data, Inc.

GPUS gained approximately 22.1% in the scanner snapshot. A possible catalyst was Hyperscale Data Announces Suspension of Its At-the-Market Offering. The headline should be verified against the original source before publication.

BKYI — BIO-key International, Inc.

BKYI gained approximately 12.4% in the scanner snapshot. A possible catalyst was BIO-key Secures Another Middle East Government Contract for its Passwordless, Biometric, Identity and Access Management Solutions. The headline should be verified against the original source before publication.

CJMB — Callan JMB Inc.

CJMB gained approximately 11.9% in the scanner snapshot. A possible catalyst was Callan JMB to Break Ground on IV Bag Manufacturing Facility Fully Funded by Non-Dilutive and Non-Interest-Bearing Third-Party Partnership. The headline should be verified against the original source before publication.

STAK — STAK Inc.

STAK gained approximately 11.4% in the scanner snapshot. A possible catalyst was STAK Inc. Announces Financial Results for Fiscal Year 2026. The headline should be verified against the original source before publication.

What To Watch Next

Premarket and after-hours moves can reverse quickly. Editors should verify the catalyst, filing history, financing activity, float structure and liquidity before publication.