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Brummer Multi-Strategy AB

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13F filer, CIK 2003159, STOCKHOLM, Sweden

Brummer Multi-Strategy AB reported $24,019,549 across 8 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-06.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0002003159-26-000004

Period
2026-03-31
Reported value
$24M
Holdings
8
Top 10 weight
100%
New
4
Sold out
7

Largest buys vs the previous quarter

SecurityShares changeApprox. value
CBREnew+49,817$6.75M
ADCnew+87,127$6.57M
WPCnew+28,508$1.94M
ARVNadded+118,734$1.26M
ATAInew+275,409$975K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
NMRKexited-200,493-$3.48M
CIexited-11,818-$3.25M
IQVexited-8,183-$1.84M
BDXexited-5,176-$1M
ATAIBECKLEY INCexited-234,915-$961K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2026

Share positions as resolved from 13F-HR 0002003159-26-000004, largest first. % of portfolio is the value over $24,019,549, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
CBRECBRE GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 49,817 shares 49,817$6.75M28.09%newTimeline
ADCAGREE RLTY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 87,127 shares 87,127$6.57M27.34%newTimeline
ARVNARVINAS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 166,342 shares; 2026Q1: 285,076 shares 285,076$3.02M12.58%+118,734Timeline
ABVXABIVAX SAQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 14,375 shares; 2026Q1: 22,428 shares 22,428$2.5M10.4%+8,053Timeline
MRVIMARAVAI LIFESCIENCES HLDGS IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 457,707 shares; 2026Q1: 759,743 shares 759,743$2.15M8.95%+302,036Timeline
WPCWP CAREY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 28,508 shares 28,508$1.94M8.07%newTimeline
ATAIATAIBECKLEY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 275,409 shares 275,409$975K4.06%newTimeline
GRMLGREENLAND MINES LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 606,757 shares; 2026Q1: 370,049 shares 370,049$122K0.51%-236,708Timeline

Sold out in Q1 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
NMRKNEWMARK GROUP INC200,493$3.48Mshares
CITHE CIGNA GROUP11,818$3.25Mshares
IQVIQVIA HLDGS INC8,183$1.84Mshares
BDXBECTON DICKINSON & CO5,176$1Mshares
ATAIBECKLEY INCATAIBECKLEY INC234,915$961Kshares
SLNOSOLENO THERAPEUTICS INC8,741$405Kshares
FHTXFOGHORN THERAPEUTICS INC4,708$25.4Kshares

How Q1 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0002003159-26-000004 base2026-05-06acceptance time not in the bulk data set