Biggest ASX share price moves in December 2025, and why
In December 2025, 112 ASX share moves had a cause we could name. The biggest rise was Sinclair Gold (SGC) at +53.8%, on contract news. The biggest fall was Boss Energy (BOE) at −24.6%, on operational news. Moves are the explained ones the site flagged that month, by the size of the day's move as it ended; the kind of news is the platform's reading of the news that day. General information only, not financial product advice.
Biggest rises (78 in the month)
- SGCSinclair GoldContract · 17 Dec+53.8%
- VMMViridis MiningRegulatory · 22 Dec+39.0%
- MEIMeteoric Res.Regulatory · 22 Dec+32.1%
- EOSElectro OpticContract · 15 Dec+28.9%
- FTIFortifaiContract · 15 Dec+25.0%
- SGCSinclair GoldCapital Raise · 22 Dec+25.0%
- DRODroneShieldContract · 16 Dec+22.2%
- 4DX4DMedicalRegulatory · 16 Dec+22.1%
- 4DX4DMedicalContract · 19 Dec+21.5%
- CBOCobram EstateEarnings Beat · 29 Dec+21.2%
Biggest falls (34 in the month)
- BOEBoss EnergyOperational · 18 Dec−24.6%
- SVLSilver MinesRegulatory · 23 Dec−21.7%
- BAPBapcorGuidance Down · 9 Dec−21.3%
- VULVulcan EnergyCapital Raise · 4 Dec−20.1%
- AUBAUB GroupTakeover / M&A · 1 Dec−17.8%
- AZYAntipa Min.Sector Flow · 16 Dec−16.9%
- PMVPremierUnknown · 5 Dec−15.9%
- GNCGrainCorpOperational · 17 Dec−15.4%
- DXBDimerixSector Flow · 24 Dec−14.4%
- EUREuropeanUnknown · 10 Dec−13.2%
Top 10 each way. Percentages are the move on the day it was flagged.
What kind of news
- Sector Flow30 moves
- Operational14 moves
- Commodity13 moves
- Contract13 moves
- Regulatory9 moves
- Capital Raise8 moves
- Takeover / M&A7 moves
- Unknown5 moves