Stocks/Funds/CIK 2003159

Brummer Multi-Strategy AB

microcap filerconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 2003159
Assets
$24M
+519.6% YoY
Holdings
8
Lifetime alpha vs market
+4.28% annual
Average hold time
0.4 yr
median 0.4 yr

Quarterly history

Cum return +22% vs S&P +17% · α +5% lifetimeAUM $24M · peak $24MFlow $9M (+52%)2023-122024-032025-092025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+39.07%
adds when stocks drop
when a holding falls −10%+
Middle response
+5.47%
steady accumulation
Rally response
+45.46%
adds into rallies
when a holding rises +10%+

Top positions · 8

Ticker$ value% portYoYHold time
CBRECBRE Group, Inc.$7M28.1%+45.5%0.3 yr
ADCAgree Realty Corporation$7M27.3%+31.7%0.3 yr
ARVNArvinas, Inc.$3M12.6%-74.2%0.5 yr
ABVXAbivax S.A.$2M10.4%+940.7%0.5 yr
MRVIMaravai LifeSciences Hol$2M9.0%-56.8%0.5 yr
WPCW. P. Carey Inc.$2M8.1%+18.0%0.3 yr
$1M4.1%0.3 yr
GRMLGreenland Mines Ltd.$0M0.5%0.5 yr

Portfolio composition (YoY)

Industry mix
Biotechnology31.9%$8M
Real Estate - Services28.1%$7M
REIT - Retail27.3%$7M
REIT - Diversified8.1%$2M
Unknown4.1%$1M
Other Precious Metals0.5%$0M
Country
US85.5%-14.5pp
FR10.4%
Unknown4.1%
Top 5: 87.4% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 7

new+$0M
CBRE CBRE Group, Inc.new+$7M
ADC Agree Realty Corporationnew+$7M
WPC W. P. Carey Inc.new+$2M
ARVN Arvinas, Inc.+$1M
ABVX Abivax S.A.+$1M
MRVI Maravai LifeSciences Holdings,+$1M

Top sells this quarter · 8

exit$0M
CI Cigna Corporationexit$3M
NMRK Newmark Group, Inc.exit$3M
IQV IQVIA Holdings Inc.exit$1M
ATAI Atai Beckley N.Vexit$1M
BDX Becton, Dickinson and Companyexit$1M
GRML Greenland Mines Ltd.$0M
FHTX Foghorn Therapeutics Inc.exit$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$24M8+22.19%+17.18%+5.01%+0.01B
2025-12-31$17M11+5.32%+2.66%+2.65%+0.01B
2025-09-30$5M4+6.26%+8.12%-1.86%+0.00B
2024-03-31$5M1+17.61%+10.39%+7.22%+0.00B
2023-12-31$4M1