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Disclosery

ATER ATERIAN INC

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COM NEW (common), issuer CIK 1757715

22 managers (24 13F filers) reported a position in ATER shares at 2026-06-30, 685,660 shares in all. 2 filers opened a position and 4 filers sold out during the quarter.

Managers
22
13F filers
24
New
2
Added
7
Reduced
3
Sold out
4
Shares held by filers
685,660

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
RENAISSANCE TECHNOLOGIES LLC223,030$294K<0.01%+174,38313F-HRTimeline
VANGUARD GROUP INCgroup of 3 filers holding84,615$112K0Timeline
BlackRock, Inc.in group BlackRock, Inc.72,289$95.4K<0.01%013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC61,128$80.7K<0.01%-72,74613F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC52,500$69.3K<0.01%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC49,348$65.1K<0.01%+17,16813F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…47,818$63.1K<0.01%+10,82713F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd31,280$41.3K<0.01%-26,63813F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP24,007$31.7K<0.01%013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP13,165$17.4K<0.01%+2,28613F-HRTimelineGroup
UBS Group AGin group UBS Group AG12,704$16.8K<0.01%+7,20513F-HRTimelineGroup
SIMPLEX TRADING, LLC6,172$8.15K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…3,795$5.01K<0.01%+2,32913F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO2,784$3.73K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.581$765<0.01%+35013F-HRTimelineGroup
SBI Securities Co., Ltd.311$411<0.01%-413F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS73$96<0.01%013F-HRTimelineGroup
STANCE CAPITAL LLC36$48<0.01%013F-HRTimeline
PROATHLETE WEALTH MANAGEMENT LLC21$27<0.01%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1$2<0.01%013F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/1$1<0.01%013F-HRTimelineGroup
TD Waterhouse Canada Inc.1$1<0.01%013F-HRTimeline

Events

  • Chang Woei Jiann reported 26,121,180 ATER shares, 10% of the class, as of 2026-09-25, in a 13D filed 2026-10-02. 0001437749-26-031910

    Accepted , ingested

  • Michelle Chiam Sin Ling reported 26,121,180 ATER shares, 10% of the class, as of 2026-09-25, in a 13D filed 2026-10-02. 0001437749-26-031908

    Accepted , ingested

  • Lazar David E. reported 8,038,030 ATER shares, 3.1% of the class, as of 2026-09-25, in a 13D/A filed 2026-09-29. 0001829126-26-010591

    Accepted , ingested