Lead · largest opening gap
Top gappers on : SAIQ, MI and PSKY
6 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.
Rank 1SAIQWISeSat.Space Holdings Corp.
- Opening gap
- +285.41%
- Day
- +260.54%
- HOD (ET)
- 18.3904:36 ET
- Est. turnover
- $512.6M
- Gap-ups (≥1M shares)
- 956
On Monday, October 5, 2026, 956 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 SAIQ at +285.41%.
SAIQ (WISeSat.Space Holdings Corp.) opened at 7.13, +285.41% from the previous close of 1.85. Its high of day was 18.39 at 04:36 ET. It closed at 6.67, +260.54% on the day, on an estimated $512.6M of turnover. No SEC filing or news found by the close.
PTC (PTC INC.) opened at 195.84, +35.97% from the previous close of 144.03. Its high of day was 198.67 at 06:34 ET. It closed at 192.26, +33.49% on the day, on an estimated $5.7B of turnover. By the close the record held 8-K at 07:22 ET: M&A — Schneider Electric to acquire PTC, creating the next level of Energy and Industrial Intelligence.
RETO (ReTo Eco-Solutions, Inc.) opened at 2.04, +31.94% from the previous close of 1.55. Its high of day was 2.48 at 07:16 ET. It closed at 1.95, +25.81% on the day, on an estimated $39.1M of turnover.
BEAT (HeartBeam, Inc.) opened at 0.75, +72.57% from the previous close of 0.4346. Its high of day was 0.95 at 09:09 ET. It closed at 0.6542, +50.53% on the day, on an estimated $300.3M of turnover.
APUS (Apimeds Pharmaceuticals US, Inc.) opened at 4.99, +54.97% from the previous close of 3.22. Its high of day was 6.99 at 08:29 ET. It closed at 4.59, +42.55% on the day, on an estimated $183.8M of turnover.
Pre-market: 8 of 10 highs of day.
Across the small caps the map tracks, 958 advanced and 1,105 declined, with an estimated $18.0B in dollar volume.
Behind it in the ranking: BEAT +72.57% (+50.53% on the day); APUS +54.97% (+42.55% on the day); PTC +35.97% (+33.49% on the day); RETO +31.94% (+25.81% on the day).
6 of the top 10 had an SEC filing or a trading halt between the previous close and this session’s close.
