Why Is Australian Critical Minerals (ASX:ACM) Share Price Falling Today?

Sonal Goyal

27 October 2026 04:28 PM AEDT

Why Is Australian Critical Minerals (ASX:ACM) Share Price Falling Today?

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Key Highlights

Australian Critical Minerals shares traded at $0.018, down 25.00%, during the 27 October 2026 trading session.
The company reported assays from hole FL_DDH002 at the Flint Project in Peru.
Phase 1 drilling totalled 1,773.3 m across four diamond holes.

Shares in Australian Critical Minerals Ltd (ASX:ACM) were trading at $0.018, down 25.00%, during the 27 October 2026 trading session, while the S&P/ASX 200 index was at 8,852.80, up 0.49% (42.90 points), at 3:40 pm GMT+11. Australian Critical Minerals is an ASX-listed explorer with the Flint Project in Peru. The company’s most recent update, dated 9 September 2026, covered assay results and new interpretation from its Phase 1 drilling.

FL_DDH002 Assays (9 September 2026)

In its 9 September 2026 announcement, the company said hole FL_DDH002 intersected advanced argillic alteration with anomalous antimony, arsenic, tellurium and thallium between surface and 54 m, which it said confirms a high-sulphidation epithermal target. The alteration overlies propylitic alteration that grades into phyllic alteration with more than 10% pyrite to the end of hole at 656.7 m.

Molybdenum peaked at 23 ppm and copper was typically 75 to 131 ppm in the deeper section, with localised gold at parts-per-billion levels. The hole was extended below its original target depth because of encouraging alteration vectors.

Phase 1 Program and New Targets

The completed Phase 1 program comprised four diamond holes for 1,773.3 m, testing resistivity anomalies beneath quartz-alunite alteration in the northern part of the project. The company said the results point to a possible large-scale copper-molybdenum-gold porphyry system.

An audio-magnetotelluric 3D model also identified two large conductive targets in the underexplored southern area, which the company says may reflect a lithocap above porphyry mineralisation. A follow-up program is being designed to test the porphyry and epithermal targets and set priority drill sites.

Sector Context

The broader market was higher during the session, with the S&P/ASX 200 index was at 8,852.80, up 0.49% (42.90 points), at 3:40 pm GMT+11. Copper and copper-gold explorers and producers report drilling, shipments and funding in stages, and results are announced as assays and sales are finalised.

Australian Critical Minerals shares were trading at $0.018, down 25.00%, against a benchmark gain of 0.49%, a gap of 25.49 percentage points. The figures are session data recorded while the market was open and can change before the market finishes trading.

Risks

The company’s own results show low-level copper and molybdenum and localised gold, and describe a potential rather than a defined system. Interpretation depends on follow-up exploration, and no resource has been estimated.

What Lies Ahead

The announcement points to design of a follow-up program, definition of priority drill sites at Flint and further assessment of the southern conductive targets.

Final Takeaway

ACM shares fell sharply during the session at a low share price. The latest company update describes drilling-based interpretation and a follow-up program still being designed.

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