Lead · largest opening gap
Top gappers on : ULBI, BRAI and CHSN
8 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.
Rank 1ULBIULTRALIFE CORP
- Opening gap
- +145.44%
- Day
- +145.44%
- HOD (ET)
- 15.6709:35 ET
- Est. turnover
- $39.1M
- Gap-ups (≥1M shares)
- 756
On Wednesday, October 28, 2026, 756 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 ULBI at +145.44%.
ULBI (ULTRALIFE CORP) opened at 15.61, +145.44% from the previous close of 6.36. Its high of day was 15.67 at 09:35 ET. It closed at 15.61, +145.44% on the day, on an estimated $39.1M of turnover. By the close the record held 8-K at 12:13 ET: Other — Ultralife Corporation.
DAVI (DAVION HEALTHCARE PLC) opened at 3.72, +24.00% from the previous close of 3.00. Its high of day was 4.95 at 04:00 ET. It closed at 3.29, +9.67% on the day, on an estimated $32.8M of turnover.
BOOM (DMC Global Inc.) opened at 6.62, +23.74% from the previous close of 5.35. Its high of day was 7.95 at 19:41 ET. It closed at 7.73, +44.49% on the day, on an estimated $55.4M of turnover. By the close the record held 8-K at 16:06 ET: Earnings — FOR IMMEDIATE RELEASE: CONTACT:.
AXGN (Axogen, Inc.) opened at 45.45, +21.32% from the previous close of 37.46. Its high of day was 49.97 at 14:49 ET. It closed at 49.25, +31.47% on the day, on an estimated $441.5M of turnover. By the close the record held 8-K at 07:04 ET: Earnings — EX-99.1 Q3 2026 EARNINGS PRESS RELEASE.
Pre-market: 3 of 10 highs of day.
Across the small caps the map tracks, 1,682 advanced and 1,207 declined, with an estimated $20.7B in dollar volume.
Behind it in the ranking: DAVI +24.00% (+9.67% on the day); AXGN +21.32% (+31.47% on the day); LUNG +19.70% (+27.27% on the day); BKYI +17.73% (+14.81% on the day).
Behind it in the ranking: LUNG +19.70% (+27.27% on the day); BKYI +17.73% (+14.81% on the day).
8 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.
