No. 19
Market temperatureSmall Cap Market Map heatVery hot

Market breadthUp914Down1,969Flat69Gap-ups (≥1M shares) 388

No. 19Closed 16:00 ETRanking stored Inside: Top movers A2 Why they moved A3 HOD timing A4 Market map & FESCI A5 Articles A6

Sections of this recap

Lead · largest opening gap

Top gappers on : SOAR, KOD and CLRO

1 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.

Rank 1SOARVolato Group, Inc.

Opening gap
+111.03%
Day
+77.60%
HOD (ET)
0.468210:21 ET
Est. turnover
$365.5M
Gap-ups (≥1M shares)
388

On Monday, September 28, 2026, 388 US-listed common stocks and common-stock ADRs opened above their previous close with at least 1M shares of daily volume. The largest opening gap was SOAR at +111.03%.

SOAR (Volato Group, Inc.) opened at 0.3788, +111.03% from the previous close of 0.1795. Its high of day was 0.4682 at 10:21 ET. It closed at 0.3188, +77.60% on the day, on an estimated $365.5M of turnover. SEC filings and news were not collected for this session.

ARAY (ACCURAY INC) opened at 0.2877, +33.75% from the previous close of 0.2151. Its high of day was 0.449 at 04:44 ET. It closed at 0.2998, +39.38% on the day, on an estimated $128.6M of turnover.

MIMI (Mint Inc Ltd) opened at 1.03, +33.56% from the previous close of 0.7712. Its high of day was 1.12 at 04:00 ET. It closed at 0.9018, +16.93% on the day, on an estimated $26.9M of turnover.

MEDS (DataMeds AI, Inc.) opened at 3.97, +27.65% from the previous close of 3.11. Its high of day was 4.87 at 06:52 ET. It closed at 3.81, +22.51% on the day, on an estimated $138.4M of turnover.

Pre-market: 6 of 10 highs of day.

Across the small caps the map tracks, 914 advanced and 1,969 declined, with an estimated $16.2B in dollar volume.

Behind it in the ranking: NAMI +54.09% (+40.88% on the day); ARAY +33.75% (+39.38% on the day); MIMI +33.56% (+16.93% on the day); MEDS +27.65% (+22.51% on the day).

1 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.

Continued in Why they moved

Stocks in focus

  1. Rank 2KOD+90.74%Day +177.96%

    Kodiak Sciences Inc.

    High of day 95.77 at 15:44 ET; estimated turnover $3.1B.

  2. Rank 3CLRO+68.99%Day +47.83%

    CLEARONE INC

    High of day 7.30 at 04:24 ET; estimated turnover $158.6M.

  3. Rank 4GYGY+63.60%Day +17.97%

    Game Your Game Inc.

    High of day 1.72 at 07:34 ET; estimated turnover $138.8M.

  4. Rank 5LFCR+55.24%Day +55.24%

    LIFECORE BIOMEDICAL, INC. DE

    High of day 6.65 at 16:08 ET; estimated turnover $26.2M.

  5. Rank 6NAMI+54.09%Day +40.88%

    Jinxin Technology Holding Co

    High of day 2.84 at 09:42 ET; estimated turnover $108.4M.

  6. Rank 10WBUY+25.59%Day +8.16%

    WEBUY GLOBAL LTD6-K

    REPORT OF FOREIGN PRIVATE ISSUER

    SEC EDGAR

Stored Top Gappers ranking and HOD archive

Market map & FESCI

The Small Cap Market Map for this session loads here.Market Map data as of

Small-cap dollar volume (est.)
$16.2B

Top movers

Held or faded

3 of 10 closed at or above the open

  1. GYGY+63.60%+17.97%-27.9%

Stored Top Gappers ranking

HOD timing

Pre-market: 6 of 10 highs of day

The Gapper HOD Timeline for this session loads here.

  1. Pre-market04:00–09:306 of 10
  2. First 30 minutes09:30–10:001 of 10
  3. Morning10:00–12:001 of 10
  4. Afternoon12:00–16:001 of 10
  5. After hours16:00–20:001 of 10

Learning corner

Lessons and terms behind this session

Editor’s note

Monday's gap list had a $1.17 billion AI-infrastructure contract at a penny stock, a Phase 3 readout in eye disease and a cash takeover. Of the 10 largest opening gaps, 7 closed below their opening price and 3 held at…

Method

Top Gappers Calendar default method: US-listed common stocks and common-stock ADRs, daily volume ≥ 1,000,000 shares, opening gap highest first

Every session in September 2026

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.