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No. 8
Market temperatureSmall Cap Market Map heatVery hot

Market breadthUp1,473Down1,353Flat88Gap-ups (≥1M shares) 1,439

No. 8Closed 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, ACVA and FTFT

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

Rank 1TNONTenon Medical, Inc.

Opening gap
+53.58%
Day
+11.89%
HOD (ET)
10.8410:52 ET
Est. turnover
$861.8M
Gap-ups (≥1M shares)
1,439

On Friday, September 11, 2026, 1,439 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 +53.58%.

TNON (Tenon Medical, Inc.) opened at 8.14, +53.58% from the previous close of 5.30. Its high of day was 10.84 at 10:52 ET. It closed at 5.93, +11.89% on the day, on an estimated $861.8M of turnover. By the close the record held 4 at 16:01 ET: Insider transaction report. By the close the record held 4 at 10:13 ET: PRIMARY DOCUMENT.

Pre-market: 4 of 10 highs of day.

Across the small caps the map tracks, 1,473 advanced and 1,353 declined, with an estimated $15.8B in dollar volume.

Behind it in the ranking: ACVA +44.81% (+44.18% on the day); FTFT +37.56% (+40.49% on the day); TRUG +34.81% (+76.14% on the day); LBGJ +33.51% (+15.98% on the day); BDRX +33.31% (+96.94% on the day); FEIM +33.12% (+42.40% on the day).

3 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 2ACVA+44.81%Day +44.18%

    ACV Auctions Inc.8-K

    FORM 8-K

    SEC EDGAR

  2. Rank 3FTFT+37.56%Day +40.49%

    Future FinTech Group Inc.

    High of day 3.40 at 09:38 ET; estimated turnover $156.0M.

  3. Rank 4TRUG+34.81%Day +76.14%

    TruGolf Holdings, Inc.

    High of day 0.7662 at 16:09 ET; estimated turnover $252.6M.

  4. Rank 5LBGJ+33.51%Day +15.98%

    Li Bang International Corp Inc.

    High of day 3.25 at 04:00 ET; estimated turnover $16.9M.

  5. Rank 8AENT+31.94%Day +16.52%

    ALLIANCE ENTERTAINMENT HOLDING CORP10-K

    Form 10-K filed with the SEC

    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.)
$15.8B

Top movers

  1. 1TNON+53.58%+11.89%
  2. 2ACVA+44.81%+44.18%
  3. 3FTFT+37.56%+40.49%
  4. 4TRUG+34.81%+76.14%
  5. 5LBGJ+33.51%+15.98%
  6. 6BDRX+33.31%+96.94%
  7. 7FEIM+33.12%+42.40%
  8. 8AENT+31.94%+16.52%
  9. 9PCLA+29.42%+4.01%
  10. 10SURG+26.32%+5.23%

Today’s feature

A narrow band of sky between two glass office towers.Quotes and executionBid, ask, and spread: why can a new position show a loss?Understand bid, ask, last price, and the bid-ask spread. See why a new position can show a loss, and how spread differs from slippage and trading fees.By Mike Captain · 5 min read

Why they moved

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

HOD timing

Pre-market: 4 of 10 highs of day

The Gapper HOD Timeline for this session loads here.

  1. Pre-market04:00–09:304 of 10
  2. First 30 minutes09:30–10:002 of 10
  3. Morning10:00–12:002 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

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.