Lead · largest opening gap
Top gappers on : IMRN, OFAL and WETO
1 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.
Rank 1IMRNImmuron Ltd
- Opening gap
- +63.06%
- Day
- +62.16%
- HOD (ET)
- 1.9909:45 ET
- Est. turnover
- $217.4M
- Gap-ups (≥1M shares)
- 349
On Friday, September 4, 2026, 349 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 IMRN at +63.06%.
IMRN (Immuron Ltd) opened at 1.81, +63.06% from the previous close of 1.11. Its high of day was 1.99 at 09:45 ET. It closed at 1.80, +62.16% on the day, on an estimated $217.4M of turnover. SEC filings and news were not collected for this session.
IOT (Samsara Inc.) opened at 44.90, +15.87% from the previous close of 38.75. It closed at 40.20, +3.74% on the day, on an estimated $1.0B of turnover.
SWBI (SMITH & WESSON BRANDS, INC.) opened at 14.12, +15.08% from the previous close of 12.27. It closed at 12.89, +5.05% on the day, on an estimated $22.0M of turnover.
PLAG (Planet Green Holdings Corp.) opened at 0.739, +14.57% from the previous close of 0.645. It closed at 0.702, +8.84% on the day, on an estimated $24.7M of turnover.
Pre-market: 3 of 5 highs of day.
Across the small caps the map tracks, 1,599 advanced and 1,177 declined, with an estimated $13.6B in dollar volume.
Behind it in the ranking: AKAN +18.80% (-8.72% on the day); IOT +15.87% (+3.74% on the day); SWBI +15.08% (+5.05% on the day); PLAG +14.57% (+8.84% 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.
