Biggest stock gainers: June 2026
monthly roundup · biggest single-day percent gain · 15 recorded packs · every day linked
Data provenance
Built from 15 committed daily packs: 2026-06-10 through 2026-06-30 (US regular sessions, ET).
Stock movers record begins Wednesday, June 10, 2026. Quotes delayed at least 15 min · delayed-redistributable · How we source data
Across 15 recorded trading days with gainer rows in June 2026, CAST posted the biggest single-day gain in Tapeboard's close snapshots, up 98.8% on Friday, June 12, 2026, closing at $1.28.
Top movers
Biggest stock gainers: June 2026, best recorded biggest single-day percent gain
| Rank | Symbol | Best day gain | Close | Volume | Recorded |
|---|---|---|---|---|---|
| 1 | CAST | +98.8% | $1.28 | not recorded | Jun 12, 2026 |
| 2 | ADTX | +97.4% | $0.04 | not recorded | Jun 23, 2026 |
| 3 | GETY | +96.7% | $1.19 | not recorded | Jun 22, 2026 |
| 4 | TNMG | +88.5% | $0.92 | not recorded | Jun 29, 2026 |
| 5 | CHOW | +88.1% | $0.66 | not recorded | Jun 10, 2026 |
| 6 | YMAT | +86.2% | $0.72 | not recorded | Jun 17, 2026 |
| 7 | FMFC | +86.2% | $0.47 | not recorded | Jun 24, 2026 |
| 8 | GPUS | +84.6% | $0.48 | not recorded | Jun 17, 2026 |
| 9 | PPCB | +84.4% | $2.49 | not recorded | Jun 11, 2026 |
| 10 | SCAG | +79.3% | $0.63 | not recorded | Jun 24, 2026 |
How this is BUILT
How this roundup is built
This roundup is built only from the committed daily close packs for this period. For each symbol the table shows its single best recorded daily percent gain in the period, with the close price and volume from that same day. Nothing is interpolated: a session with no committed pack has no row here, and months with no packs have no roundup at all.
Recorded DAYS
Every recorded day of June 2026 (15 packs)
- Jun 30, 2026
- Jun 29, 2026
- Jun 26, 2026
- Jun 25, 2026
- Jun 24, 2026
- Jun 23, 2026
- Jun 22, 2026
- Jun 19, 2026
- Jun 18, 2026
- Jun 17, 2026
- Jun 16, 2026
- Jun 15, 2026
- Jun 12, 2026
- Jun 11, 2026
- Jun 10, 2026
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