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No. 7
Market temperatureSmall Cap Market Map heatHot

Market breadthUp916Down1,938Flat88Gap-ups (≥1M shares) 504

No. 7Closed 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 : TNON, IPDN and AEON

Rank 1TNONTenon Medical, Inc.

Opening gap
+72.13%
Day
+117.21%
HOD (ET)
6.1016:29 ET
Est. turnover
$583.7M
Gap-ups (≥1M shares)
504

On Thursday, September 10, 2026, 504 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 TNON at +72.13%.

TNON (Tenon Medical, Inc.) opened at 4.20, +72.13% from the previous close of 2.44. Its high of day was 6.10 at 16:29 ET. It closed at 5.30, +117.21% on the day, on an estimated $583.7M of turnover. SEC filings and news were not collected for this session.

Morning: 2 of 5 highs of day.

Across the small caps the map tracks, 916 advanced and 1,938 declined, with an estimated $15.6B in dollar volume.

Behind it in the ranking: IPDN +44.28% (+12.23% on the day); AEON +28.14% (+25.54% on the day); PCLA +23.32% (+31.00% on the day); JZ +21.15% (-2.28% on the day); SKYQ +19.48% (+19.48% on the day); SLXN +18.80% (+20.89% on the day).

SEC filings and news were not collected for this session.

Continued in Why they moved

Stocks in focus

  1. Rank 2IPDN+44.28%Day +12.23%

    Professional Diversity Network, Inc.

    High of day 0.22 at 10:19 ET; estimated turnover $87.2M.

  2. Rank 3AEON+28.14%Day +25.54%

    AEON Biopharma, Inc.

    High of day 0.3672 at 16:21 ET; estimated turnover $64.7M.

  3. Rank 4PCLA+23.32%Day +31.00%

    PicoCELA Inc.

    High of day 10.74 at 10:12 ET; estimated turnover $59.8M.

  4. Rank 5JZ+21.15%Day -2.28%

    Jianzhi Education Technology Group Co Ltd

    High of day 1.30 at 04:06 ET; estimated turnover $12.1M.

  5. Rank 6SKYQ+19.48%Day +19.48%

    Sky Quarry Inc.

    Estimated turnover $98.4M.

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.)
$15.6B

Top movers

  1. 1TNON+72.13%+117.21%
  2. 2IPDN+44.28%+12.23%
  3. 3AEON+28.14%+25.54%
  4. 4PCLA+23.32%+31.00%
  5. 5JZ+21.15%-2.28%
  6. 6SKYQ+19.48%+19.48%
  7. 7SLXN+18.80%+20.89%
  8. 8CULP+17.19%+9.74%
  9. 9TPET+16.02%+11.60%
  10. 10XRTX+13.53%-2.22%

Today’s feature

Commuters crossing a financial-district street during the morning rush.Trading activityVolume and relative volume: what are you comparing?Learn what relative volume (RVOL) measures, how its calculation differs across platforms, and why time-matched volume comparisons matter.By Poechant · 5 min read

Why they moved

SEC filings and news were not collected for this session.

HOD timing

Morning: 2 of 5 highs of day

The Gapper HOD Timeline for this session loads here.

  1. Pre-market04:00–09:301 of 5
  2. First 30 minutes09:30–10:000 of 5
  3. Morning10:00–12:002 of 5
  4. Afternoon12:00–16:000 of 5
  5. After hours16:00–20:002 of 5

Learning corner

Lessons and terms behind this session

Further reading

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.