Biggest ASX share price moves in May 2026, and why
In May 2026, 186 ASX share moves had a cause we could name. The biggest rise was 1414 Degrees (14D) at +38.1%, on contract news. The biggest fall was Tuas (TUA) at −62.8%, on regulatory 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 (112 in the month)
- 14D1414 DegreesContract · 13 May+38.1%
- CTTCettireOperational · 29 May+30.6%
- MP1MegaportContract · 14 May+27.7%
- DGTDigico InfraOperational · 7 May+25.0%
- AI1AdisynStake Change · 7 May+25.0%
- 14D1414 DegreesContract · 28 May+25.0%
- WBTWeebit NanoCapital Raise · 14 May+21.6%
- ELSElsightContract · 29 May+20.2%
- 4DX4DMedicalContract · 30 May+18.9%
- KGNKogan.comEarnings Beat · 26 May+18.6%
Biggest falls (74 in the month)
- TUATuasRegulatory · 18 May−62.8%
- GTKGentrackGuidance Down · 5 May−38.5%
- APXAppenEarnings Miss · 1 May−27.4%
- TAHTabcorpRegulatory · 7 May−23.5%
- ELDEldersEarnings Miss · 18 May−22.9%
- HLSHealiusGuidance Down · 14 May−22.7%
- BXBBramblesGuidance Down · 18 May−20.2%
- BAPBapcorGuidance Down · 14 May−18.4%
- TUATuasRegulatory · 20 May−16.9%
- IELIDP EducationAnalyst · 30 May−16.2%
Top 10 each way. Percentages are the move on the day it was flagged.
What kind of news
- Sector Flow51 moves
- Operational29 moves
- Contract15 moves
- Analyst13 moves
- Earnings Beat13 moves
- Guidance Down11 moves
- Capital Raise9 moves
- Regulatory9 moves