Why they moved: filings and halts

Stored SEC filings and exchange halt records for each leader between the previous close (2026-10-22 16:00 ET) and this session’s close (2026-10-23 16:00 ET). Facts with source links; no interpretation.

Rank 1MYND

Mynd.ai, Inc.

Opening gap: +78.13%
Day: +47.42%
HOD (ET): 0.393518:09 ET
Est. turnover: $16.3M

No SEC filing or news found by the close.

Rank 2BOLT

Bolt Biotherapeutics, Inc.

Opening gap: +66.59%
Day: +49.64%
HOD (ET): 7.7810:02 ET
Est. turnover: $89.6M

8-KPrivate placementBolt Biotherapeutics Announces Acquisition of Prana Therapies and $120 Million Concurrent Private Placement to Advance PRA-216 in Multiple High-Value Inflammatory Indications2026-10-23 10:31 ET

Rank 3XXII

22nd Century Group, Inc.

Opening gap: +50.67%
Day: -8.34%
HOD (ET): 0.745905:17 ET
Est. turnover: $82.7M

No SEC filing or news found by the close.

Rank 4LUCD

Lucid Diagnostics Inc.

Opening gap: +32.47%
Day: +25.42%
HOD (ET): 0.4804:00 ET
Est. turnover: $47.3M

8-KPrivate placementLucid Diagnostics Inc. filed an 8-K: Unregistered Sales of Equity, Rights of Security Holders, Charter or Bylaws2026-10-22 16:34 ET

Rank 5YMAT

J-Star Holding Co., Ltd.

Opening gap: +32.29%
Day: +6.77%
HOD (ET): 3.8007:33 ET
Est. turnover: $136.4M

6-KForm 6-K filed with the SEC2026-10-23 12:16 ET

Rank 6AIOK

AI OKTO Corp.

Opening gap: +30.59%
Day: +182.82%
HOD (ET): 15.5912:06 ET
Est. turnover: $475.3M

6-KContractAI OKTO Announces the Sale of the LPG Carrier Dream Arrax2026-10-23 09:29 ET
6-KOtherAI OKTO Corp. Declares Special Dividend of $3.50 Per Share2026-10-23 09:29 ET

Rank 7AIXI

Xiao-I Corp

Opening gap: +28.63%
Day: +19.35%
HOD (ET): 3.6408:15 ET
Est. turnover: $52.9M

No SEC filing or news found by the close.

Rank 8SAIQ

WISeSat.Space Holdings Corp.

Opening gap: +27.65%
Day: +15.91%
HOD (ET): 7.0710:13 ET
Est. turnover: $48.7M

No SEC filing or news found by the close.

Rank 9GPUS

Hyperscale Data, Inc.

Opening gap: +20.00%
Day: +34.05%
HOD (ET): 0.18812:54 ET
Est. turnover: $63.5M

No SEC filing or news found by the close.

Rank 10BKYI

BIO KEY INTERNATIONAL INC

Opening gap: +18.61%
Day: +23.72%
HOD (ET): 3.9211:51 ET
Est. turnover: $124.6M

No SEC filing or news found by the close.

Retrospective data built after the session from stored records, with links to the original sources. Not real-time, not investment advice and not a recommendation to buy or sell any security.