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Official ASIC short position data for ASX stocks. Updated daily with T+4 delay.

Not financial advice.

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Data sourced from ASIC with T+4 trading day delay. Not financial advice.

© 2026 Shorted

OwnershipRegistersIDX register

Integral Diagnostics substantial holders

ASX:IDX register

Who holds IDX as its ASX substantial holding notices state it: every holder of 5% or more whose notice we could read, what that notice states, and how each holding stepped from notice to notice. Index fund files and super fund option disclosures sit beside the notices, never added to them.

Notices read to 2026-11-02 · short interest 1.39% of 373.7M shares on issue, as of 2026-10-28 (ASIC, T+4) · index fund files as at 2026-09-30 to 2026-10-30 · super options as at 2026-06-30 · Not financial advice

  • Stock overview →
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  • Short interest →

The register

Disclosed by notices
22.11%
4 interests counted once, 5 holders; not a share of the company
Index funds tracked
2.01%
3 files, as at 2026-09-30 to 2026-10-30
Super options tracked
9
$23.6M combined, as at 2026-06-30

What the notices disclose, each interest counted once; not a share of the company.

Substantial holders

The notices behind each line are listed in the Notices table below.

  1. Challenger Limited
    Active manager
    6.33%
    2026-09-02
    +1.05 pp
  2. Lennox Capital Partners Pty Ltd
    Unclassified
    6.33%
    2026-09-02
    +1.05 pp
  3. YARRA CAPITAL MANAGEMENT LIMITED
    Active manager
    5.70%
    2024-12-20 · 22 mo
    −4.07 pp
  4. Australian Retirement Trust Pty LTD ATF Australian Retirement Trust
    Super fund
    5.043%
    2026-05-29 · 5 mo
    Became substantial
  5. Wilson Asset Management Group
    Active manager
    5.04%
    2026-05-01 · 6 mo
    Became substantial
  6. Vanguard Group
    Index manager
    under 5%
    2025-06-20 · 16 mo
    Ceased
  7. Citigroup Global Markets Australia Pty Limited
    Bank or broker
    under 5%
    2024-12-23 · 22 mo
    Ceased
  8. Perpetual Limited
    Active manager
    under 5%
    2024-12-20 · 22 mo
    Ceased
  9. Mitsubishi UFJ Financial Group, Inc
    Bank or broker
    under 5%
    2024-12-18 · 22 mo
    Ceased
  10. First Sentier Investors Holdings Pty Limited
    Active manager
    under 5%
    2024-12-18 · 22 mo
    Ceased
  11. Morgan Stanley
    Bank or broker
    under 5%
    2024-12-17 · 23 mo
    Ceased
  12. JPMorgan Chase & Co
    Bank or broker
    under 5%
    2024-12-13 · 23 mo
    Ceased
2 more holders
  1. Viburnum Funds Pty Ltd
    Unclassified
    under 5%
    2024-10-24 · 24 mo
    Ceased
  2. Macquarie Group Limited
    Bank or broker
    under 5%
    2024-01-03 · 34 mo
    Ceased
20252026
One line per holder, stepping at each notice read, on its own scale from 5% up: a small step on a large holding is slight here and exact in the figures beside it. Flat between notices means no later notice was read: a holding can move by less than the 1 percentage point that requires a new notice, and a notice we withheld is not drawn. A line ending at the 5% edge is a cessation (Form 605): under 5%, not zero. A dotted tail is the time since the holder's last notice read; a dotted lead-in is the previous figure the first notice drawn states. A notice without an event date sits on its release date. From 2024-01-03 to 2026-11-02. 6 notices listed under IDX were withheld: not read or not reconcilable, never estimated.

Index funds and super options

Index fund figures are the funds' own holdings files; Vanguard's are the pooled fund behind each ETF, not the ETF alone (marked P). Super fund figures are one investment option's disclosure, never the whole fund. Each row carries its file's date.

FundSourceValueOf sharesOf fundAs at
VanguardVanguard Australian Shares Index Fund (VAS)Ppooled wholesale fund, not the ETF aloneIndex fund file$15.9M1.96%0.03%2026-09-30
HostplusBalancedSuper option$10.5M1.41%0.01%2026-06-30
Cbus SuperGrowth (Cbus MySuper)Super option$6.1M0.82%0.01%2026-06-30
Australian Retirement TrustBalancedSuper option$3.0M0.40%0.01%2026-06-30
HESTABalanced GrowthSuper option$2.7M0.36%<0.01%2026-06-30
Aware SuperBalanced (Accumulation)Super option$510.6K0.07%<0.01%2026-06-30
RestGrowthSuper option$506.2K0.07%<0.01%2026-06-30
BlackRockISO, iShares S&P/ASX Small Ordinaries ETFIndex fund file$299.2K0.05%0.24%2026-10-30
Brighter SuperBalancedSuper option$78.5K0.01%<0.01%2026-06-30
State StreetSSO, SPDR S&P/ASX Small Ordinaries FundIndex fund file$57.3K0.01%0.24%2026-10-30
Mercer SuperMercer GrowthSuper option$51.3K0.01%<0.01%2026-06-30
Vision SuperBalancedSuper option$25.4K0.00%<0.01%2026-06-30

Notices

All notices for IDX →

IDX's substantial holding notices
ReleasedHolderNoticeVoting powerChangeDocument
2026-09-04Challenger LimitedChanged6.33%+1.05 pp
2026-09-04Lennox Capital Partners Pty LtdChanged6.33%+1.05 pp
2026-06-02Australian Retirement Trust Pty LTD ATF Australian Retirement TrustBecame substantial5.043%
2026-05-21Australian Retirement Trust Pty LTD ATF Australian Retirement TrustCeasedunder 5%
2026-05-05Wilson Asset Management GroupBecame substantial5.04%
2026-05-04Australian Retirement Trust Pty LTD ATF Australian Retirement TrustBecame substantial5.016%
2025-09-05Lennox Capital Partners Pty LtdBecame substantial5.28%
2025-09-05Challenger LimitedBecame substantial5.28%
2025-06-26Vanguard GroupCeasedunder 5%
2025-05-05Challenger LimitedCeasedunder 5%
2025-03-27Vanguard GroupBecame substantial5.124%
2025-02-28Challenger LimitedBecame substantial5.40%
2024-12-24Challenger LimitedCeasedunder 5%
2024-12-24YARRA CAPITAL MANAGEMENT LIMITEDChanged5.70%−4.07 pp
2024-12-24Perpetual LimitedCeasedunder 5%
2024-12-23Citigroup Global Markets Australia Pty LimitedCeasedunder 5%
2024-12-23Mitsubishi UFJ Financial Group, IncCeasedunder 5%
2024-12-20First Sentier Investors Holdings Pty LimitedCeasedunder 5%
2024-12-20Mitsubishi UFJ Financial Group, IncChanged5.17%−1.36 pp
2024-12-19First Sentier Investors Holdings Pty LimitedChanged5.17%−1.36 pp
2024-12-19Morgan StanleyCeasedunder 5%
2024-12-18JPMorgan Chase & CoCeasedunder 5%
2024-12-16Citigroup Global Markets Australia Pty LimitedChanged6.6254%+1.19 pp
2024-12-16Perpetual LimitedBecame substantial5.39%
2024-12-09JPMorgan Chase & CoBecame substantial5.63%

Sources and method

  • ASX substantial holding notices (Corporations Act s671B, Forms 603, 604 and 605), read from the notice PDF; read to 2026-11-02.
  • Index fund holdings files: 3 files holding IDX, as at 2026-09-30 to 2026-10-30.
  • Super fund portfolio holdings disclosures, one option per fund: 9 options holding IDX, as at 2026-06-30.
  • ASIC short position report, as of 2026-10-28, published T+4.

6 notices listed under IDX were withheld: not read or not reconcilable, never estimated.

Substantial holdings are the voting power stated in each holder's latest ASX notice (Corporations Act s671B, Forms 603, 604 and 605), read from the notice PDF. A holding is shown until a later notice read says it changed or ceased; the date is the notice's, and "current" means the newest notice we could read. A notice whose voting power cannot be read unambiguously (a scanned form, a figure only in an annexure) is withheld, never estimated.

Holders' interests can overlap: MUFG reports Morgan Stanley's and First Sentier's interests as its own. Sums count each interest once where the overlap is known (a group and its member count the larger figure; two notices disclosing the same voting power on the same date count once), and every holder is still listed. Other overlaps remain, so a sum is what the notices disclose, not a share of the company. Banks' and brokers' notices are often securities lending, so crowded registers do not count them. A fall in voting power is a fall in the notice's figure, not necessarily a disposal: a placement dilutes a holder whose shares did not change.

Index fund holdings are the funds' own holdings files (Vanguard's are the pooled fund behind each ETF); super fund holdings are each fund's portfolio holdings disclosure for one investment option, not the whole fund. Short interest is ASIC's daily short position report. Not financial advice.

Spotted a problem with a figure? Report an error and the affected notice will be read again against its PDF.

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