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Investment Managers SER TR I

Q1 2026 vs Q2 2026

Comparing institutional holders between quarters

Quarters

Q2 2026Q1 2026
CompareDetailedHistoricalFundsOptionsShort Interest13D/13GPeersTargetingTrading SummaryProfile
Optiver Holding B.V.
INCREASED
Shares231,182 from 29,688
Change+201,494 (+679%)
Value$1.9M (+$981.6K)
Filed 2026-08-12
Susquehanna International Group, LLP
INCREASED
Shares124,292 from 28,325
Change+95,967 (+339%)
Value$1.0M (+$155.7K)
Filed 2026-08-14
GTS Securities LLC
NEW
Shares84,193
Change+84,193
Value$682.8K
Filed 2026-08-14
Flow Traders U.S. LLC
NEW
Shares38,676
Change+38,676
Value$314
Filed 2026-08-14
Jump Financial, LLC
DECREASED
Shares34,601 from 42,972
Change-8,371 (-19%)
Value$280.6K (-$1.0M)
Filed 2026-08-13
StoneX Group Inc.
INCREASED
Shares29,927 from 6,730
Change+23,197 (+345%)
Value$380.7K (+$178.2K)
Filed 2026-08-12
Group One Trading LLC
NEW
Shares1,069
Change+1,069
Value$8.7K
Filed 2026-08-14
Jane Street Group, LLC
CLOSED
Shares0 from 27,397
Change-27,397 (-100%)
Value$0 (-$824.4K)
Filed 2026-08-14
Imc-Chicago, LLC
CLOSED
Shares0 from 20,047
Change-20,047 (-100%)
Value$0 (-$603.2K)
Filed 2026-08-06
Simplex Trading, LLC
CLOSED
Shares0 from 15,706
Change-15,706 (-100%)
Value$0 (-$472.6K)
Filed 2026-08-12
Mirae Asset Securities (USA) Inc.
CLOSED
Shares0 from 15,000
Change-15,000 (-100%)
Value$0 (-$451.4K)
Filed 2026-08-05
Citadel Advisors LLC
CLOSED
Shares0 from 8,643
Change-8,643 (-100%)
Value$0 (-$260.1K)
Filed 2026-09-02
Renaissance Technologies LLC
CLOSED
Shares0 from 7,200
Change-7,200 (-100%)
Value$0 (-$216.6K)
Filed 2026-08-13
Status
Optiver Holding B.V.
INCREASED231,18229,688+201,494+679%$893.3K$1.9M+$981.6K2026-08-12
Susquehanna International Group, LLP
INCREASED124,29228,325+95,967+339%$852.3K$1.0M+$155.7K2026-08-14
GTS Securities LLC
NEW84,193—+84,193——$682.8K—2026-08-14
Flow Traders U.S. LLC
NEW38,676—+38,676——$314—2026-08-14
Jump Financial, LLC
DECREASED34,60142,972-8,371-19%$1.3M$280.6K-$1.0M2026-08-13
StoneX Group Inc.
INCREASED29,9276,730+23,197+345%$202.5K$380.7K+$178.2K2026-08-12
Group One Trading LLC
NEW1,069—+1,069——$8.7K—2026-08-14
Jane Street Group, LLC
CLOSED027,397-27,397-100%$824.4K$0-$824.4K2026-08-14
Imc-Chicago, LLC
CLOSED020,047-20,047-100%$603.2K$0-$603.2K2026-08-06
Simplex Trading, LLC
CLOSED015,706-15,706-100%$472.6K$0-$472.6K2026-08-12
Mirae Asset Securities (USA) Inc.
CLOSED015,000-15,000-100%$451.4K$0-$451.4K2026-08-05
Citadel Advisors LLC
CLOSED08,643-8,643-100%$260.1K$0-$260.1K2026-09-02
Renaissance Technologies LLC
CLOSED07,200-7,200-100%$216.6K$0-$216.6K2026-08-13
Showing 13 of 13 institutions