Which Australian stock saw the biggest rise in short interest over the past year?

4DMEDICAL LIMITED: up 11.11 percentage points to 11.12% as of 7 Oct 2026, per ASIC data. The full lists are on this page.

How are these changes calculated?

Each company's latest published figure is compared with its figure on the anchor date, or the nearest trade date before it. Changes are percentage points of the company, not percent of the earlier figure. A company is compared only when it has a published figure at both ends; one that was absent on either date is left out rather than counted as zero.

Does a rise mean the stock will fall?

No. These are disclosed positions, published with a delay, and a position can be a hedge rather than a bet. Nothing here is investment advice and none of it predicts anything.

Biggest changes in Australian short interest over the past year

Where Australian short positions built and unwound most over the long windows, as of 7 Oct 2026. Changes are percentage points of the company. A company is compared only when it has a published figure at both ends of the window, so one that was absent on either date is left out rather than counted as zero.

Shorter windows (1, 5, 20 and 60 days): Australian movers.

Past 12 months

From 7 Oct 2025 to 7 Oct 2026. 592 of 785 companies with a figure today also had one then; the 25 largest moves each way are shown.

Risers

4DMEDICAL LIMITED11.12%+11.11
ZIP CO LTD..12.75%+10.56
DRONESHIELD LIMITED15.06%+9.52
ARTRYALIMITED9.51%+9.51
ELECTRO OPTIC SYS.9.89%+9.43
WISETECH GLOBAL LTD11.17%+9.38
LYNAS RARE EARTHS11.67%+9.26
THE LOTTERY CORP9.54%+8.75
LOTUS RESOURCES LTD14.92%+8.61
IPERIONX LIMITED12.95%+7.36
LENDLEASE GROUP9.34%+7.28
SITEMINDER8.16%+7.28
DEVELOP GLOBAL LTD7.76%+6.36
AUB GROUP LTD7.17%+6.23
ELEVRA LITHIUM LTD7.21%+6.17
AUSSIE BROADBAND6.16%+6.13
TYRO PAYMENTS6.20%+5.97
CATAPULT SPORTS LTD7.15%+5.41
ENDEAVOUR8.70%+5.15
ELDERS LIMITED9.87%+4.88
XERO LTD5.79%+4.51
ARAFURA RARE EARTHS5.55%+4.39
PEXAGROUP6.61%+4.32
CATALYST METALS7.14%+4.26
BEACH ENERGY LIMITED7.95%+4.18

Fallers

IDP EDUCATION LTD2.35%−10.28
PWR HOLDINGS LIMITED1.59%−9.12
CORP TRAVEL LIMITED2.74%−7.08
GUZMAN Y GOMEZ LTD5.60%−6.18
ILUKA RESOURCES6.08%−6.10
BOSS ENERGY LTD13.03%−5.80
MINERAL RESOURCES.4.55%−5.78
PLS GROUP LTD13.03%−4.45
VIVA ENERGY GROUP0.37%−3.95
STRIKE ENERGY LTD0.59%−3.86
AUDINATEGROUPLTD0.92%−3.63
KAROON ENERGY LTD3.23%−3.62
PROPEL FUNERAL0.79%−3.41
RAMELIUS RESOURCES1.33%−3.33
THE STAR ENT GRP0.65%−3.23
BOTANIX PHARMA LTD0.63%−3.04
LIGHT & WONDER INC. CDI 1:10.52%−3.01
BRAINCHIP LTD1.40%−2.75
IGO LIMITED0.60%−2.63
BLUESCOPE STEEL LTD0.71%−2.59
DIGICO INFRASTR REIT5.36%−2.57
POLYNOVO LIMITED7.28%−2.44
RELIANCE WORLDWIDE1.12%−2.29
NUIX LIMITED0.77%−2.28
NEUREN PHARMACEUT.2.92%−2.25

2026 to date

From the last trade date of 2025 (31 Dec 2025) to 7 Oct 2026. 605 of 785 companies with a figure today also had one then; the 25 largest moves each way are shown.

Risers

4DMEDICAL LIMITED11.12%+11.08
ARTRYALIMITED9.51%+9.35
THE LOTTERY CORP9.54%+8.47
MINERALS260LIMITED8.38%+8.14
ZIP CO LTD..12.75%+7.97
ELECTRO OPTIC SYS.9.89%+7.61
LENDLEASE GROUP9.34%+6.86
ELEVRA LITHIUM LTD7.21%+6.74
WISETECH GLOBAL LTD11.17%+6.54
LINDIAN RESOURCES6.32%+6.22
LOTUS RESOURCES LTD14.92%+5.94
VULCAN ENERGY7.82%+5.90
LYNAS RARE EARTHS11.67%+5.69
AUB GROUP LTD7.17%+5.51
IPERIONX LIMITED12.95%+5.49
ARAFURA RARE EARTHS5.55%+5.30
PEXAGROUP6.61%+4.80
TYRO PAYMENTS6.20%+4.79
XERO LTD5.79%+4.70
SITEMINDER8.16%+4.67
CATALYST METALS7.14%+4.52
THE A2 MILK COMPANY7.33%+4.49
PLS GROUP LTD13.03%+4.41
NICK SCALI LIMITED7.33%+4.29
TEMPLE & WEBSTER LTD4.98%+4.05

Fallers

IDP EDUCATION LTD2.35%−10.34
PWR HOLDINGS LIMITED1.59%−10.30
GUZMAN Y GOMEZ LTD5.60%−8.25
BOSS ENERGY LTD13.03%−7.35
CORP TRAVEL LIMITED2.74%−6.66
KAROON ENERGY LTD3.23%−6.15
DOMINO PIZZA ENTERPR11.85%−6.00
BAPCOR LIMITED1.85%−5.01
POLYNOVO LIMITED7.28%−4.29
ACCENT GROUP LTD0.66%−4.21
AUDINATEGROUPLTD0.92%−4.09
DIGICO INFRASTR REIT5.36%−3.98
LIFESTYLE COMMUNIT.6.06%−3.50
NUIX LIMITED0.77%−3.42
STRIKE ENERGY LTD0.59%−2.88
HMC CAPITAL LIMITED4.36%−2.84
NEUREN PHARMACEUT.2.92%−2.80
JUMBO INTERACTIVE2.37%−2.67
NANOSONICS LIMITED6.68%−2.64
BOTANIX PHARMA LTD0.63%−2.37
NOVONIX LIMITED0.21%−2.34
PROPEL FUNERAL0.79%−2.33
VIVA ENERGY GROUP0.37%−2.15
WHITEHAVEN COAL1.39%−2.12
MAAS GROUP HOLDINGS0.44%−2.02

Frequently asked questions

Which Australian stock saw the biggest rise in short interest over the past year?: 4DMEDICAL LIMITED: up 11.11 percentage points to 11.12% as of 7 Oct 2026, per ASIC data. The full lists are on this page.
How are these changes calculated?: Each company's latest published figure is compared with its figure on the anchor date, or the nearest trade date before it. Changes are percentage points of the company, not percent of the earlier figure. A company is compared only when it has a published figure at both ends; one that was absent on either date is left out rather than counted as zero.
Does a rise mean the stock will fall?: No. These are disclosed positions, published with a delay, and a position can be a hedge rather than a bet. Nothing here is investment advice and none of it predicts anything.