MBB PUBLIC MARKETS I LLC

Quant stat arb Low signal CIK 1892378
League rank
#139
in Quant stat arb · #6415 overall
Long book
$835.2M
Q1 2026
Positions
24
Top-10 weight
99%
concentration
Last quarter
+8.0%
SPY +14.8%
Turnover
30%
of book per quarter

Strategy in plain words

auto-generated from filings

MBB PUBLIC MARKETS I LLC is a quantitative fund whose holdings reflect models, not opinions, running a $835.2M US long book across 24 positions.

The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The portfolio is actively managed, with meaningful quarterly turnover. Current anchor positions: PROGRESSIVE CORP, AERCAP HOLDINGS NV, AMAZON.COM INC, FERGUSON ENTERPRISES INC, MEDLINE INC-CL A.

Over the last 9 quarters its long book ran on average 2.1pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q1 2024
+0.3%
Q2 2024
+5.3%
Q3 2024
-6.6%
Q4 2024
-1.1%
Q1 2025
+8.3%
Q2 2025
+3.4%
Q3 2025
+5.7%
Q4 2025
-1.5%
Q1 2026
+8.0%

Sector allocation

Consumer discretionary
33%
Financials
22%
Services media
20%
Healthcare
14%
Energy
4%
Technology
4%
Materials
2%
Consumer staples
1%

Long book by quarter

$1.56B
Q1 2024
$4.84B
Q2 2024
$1.18B
Q3 2024
$843.9M
Q4 2024
$867.8M
Q1 2025
$868.8M
Q2 2025
$750.7M
Q3 2025
$957.2M
Q4 2025
$835.2M
Q1 2026

What does MBB PUBLIC own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
PGR PROGRESSIVE CORPFinancials890.6K$176.5M21.1%+2.9%
AER AERCAP HOLDINGS NVServices media1.1M$155.5M18.6%Held
AMZN AMAZON.COM INCConsumer discretionary681.3K$141.9M17.0%+7.1%
FERG FERGUSON ENTERPRISES INCConsumer discretionary527.8K$123.1M14.7%+12.8%
MDLN MEDLINE INC-CL AHealthcare2.4M$108.6M13.0%Held
EQT EQT CORPEnergy475.0K$30.2M3.6%-23.0%
GOOGL ALPHABET INC-CL ATechnology90.0K$25.9M3.1%-43.0%
TECK TECK RESOURCES LTD-CLS BMaterials323.2K$16.7M2.0%-42.6%
BG BUNGE GLOBAL SAConsumer staples77.4K$9.8M1.2%-23.3%
KYTX KYVERNA THERAPEUTICS INCHealthcare614.5K$5.3M0.6%Held
AVGO BROADCOM INCTechnology10.0K$3.1M0.4%-84.6%
GTX GARRETT MOTION INCIndustrials15.8K$287K0.0%Held
IBP INSTALLED BUILDING PRODUCTSIndustrials1.0K$265K0.0%Held
ESI ELEMENT SOLUTIONS INCOther7.4K$254K0.0%New
AMG AFFILIATED MANAGERS GROUPFinancials894$247K0.0%Held
IMXI INTERNATIONAL MONEY EXPRESSServices media14.2K$224K0.0%Held
SAIA SAIA INCIndustrials618$217K0.0%Held
AHCO ADAPTHEALTH CORPHealthcare18.1K$216K0.0%Held
VMD VIEMED HEALTHCARE INCHealthcare23.4K$215K0.0%Held
UNF UNIFIRST CORP/MAServices media854$215K0.0%New
RUSHA RUSH ENTERPRISES INC-CL AConsumer discretionary3.2K$211K0.0%New
HLMN HILLMAN SOLUTIONS CORPIndustrials21.6K$180K0.0%Held
JBI JANUS INTERNATIONAL GROUP INIndustrials19.8K$102K0.0%Held

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRMay 15, 202625$839.4M canonicalSEC ↗
Q4 202513F-HRFeb 17, 202627$957.2M canonicalSEC ↗
Q3 202513F-HRNov 14, 202538$752.4M canonicalSEC ↗
Q2 202513F-HRAug 14, 2025503$1.06B canonicalSEC ↗
Q1 202513F-HR/ARESTATEMENTMay 16, 2025531$906.6M canonicalSEC ↗
Q1 202513F-HRMay 15, 2025531$807.9M SEC ↗
Q4 202413F-HRFeb 14, 202584$1.08B canonicalSEC ↗
Q3 202413F-HRNov 14, 2024560$1.79B canonicalSEC ↗
Q2 202413F-HRAug 14, 2024693$4.95B canonicalSEC ↗
Q1 202413F-HRMay 15, 2024287$1.63B canonicalSEC ↗