MBB PUBLIC MARKETS I LLC — 13F Holdings & Portfolio
CIK 1892378 · latest 13F-HR filed 2026-08-14
MBB PUBLIC MARKETS I LLC manages $926.0M in 13F-reported U.S. long-equity assets across 26 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are PGR (22.21%), AER (19.27%), AMZN (18.93%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 3 new positions, exited 2, added to 13, and trimmed 7.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
SUITE 3050
CHICAGO, IL 60606
$926.0M
Long-equity book
26
Distinct positions
2026-06-30
Filed 2026-08-14
+3 / −2 / ↑13 / ↓7
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- VANGUARD MUN BD FDS$45.8M +127.8%
- AMAZON COM INC$33.4M +23.5%
- PROGRESSIVE CORP$29.1M +16.5%
- AERCAP HOLDINGS NV$23.0M +14.8%
- FERGUSON ENTERPRISES INC$9.3M +7.5%
Top Trims
- MEDLINE INC-$12.4M -11.4%
- ALPHABET INC-$11.6M -44.8%
- TECK RESOURCES LTD-$9.6M -57.3%
- EQT CORP-$5.0M -16.5%
- INSTALLED BLDG PRODS INC-$35.3K -13.3%
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | PROGRESSIVE CORP | PGR | 743315103 | $205.7M | 22.21% | 941,511 | SH |
| 2 | AERCAP HOLDINGS NV | AER | N00985106 | $178.5M | 19.27% | 1,224,242 | SH |
| 3 | AMAZON COM INC | AMZN | 023135106 | $175.3M | 18.93% | 735,480 | SH |
| 4 | FERGUSON ENTERPRISES INC | FERG | 31488V107 | $132.4M | 14.29% | 557,772 | SH |
| 5 | MEDLINE INC | MDLN | 58507V107 | $96.3M | 10.40% | 2,441,379 | SH |
| 6 | VANGUARD MUN BD FDS | VTEB | 922907746 | $81.7M | 8.82% | 1,614,405 | SH |
| 7 | EQT CORP | EQT | 26884L109 | $25.3M | 2.73% | 475,000 | SH |
| 8 | ALPHABET INC | GOOGL | 02079K305 | $14.3M | 1.54% | 40,000 | SH |
| 9 | TECK RESOURCES LTD | TECK | 878742204 | $7.1M | 0.77% | 120,228 | SH |
| 10 | KYVERNA THERAPEUTICS INC | KYTX | 501976104 | $5.5M | 0.59% | 614,477 | SH |
| 11 | GARRETT MOTION INC | GTX | 366505105 | $571.3K | 0.06% | 15,768 | SH |
| 12 | ELEMENT SOLUTIONS INC | ESI | 28618M106 | $355.5K | 0.04% | 7,444 | SH |
| 13 | AFFILIATED MANAGERS GROUP | AMG | 008252108 | $302.5K | 0.03% | 894 | SH |
| 14 | AMAZON COM INC Call | AMZN | 023135106 | $297.9K | 0.03% | 1,250 | SH |
| 15 | VIEMED HEALTHCARE INC | VMD | 92663R105 | $266.6K | 0.03% | 23,384 | SH |
| 16 | SAIA INC | SAIA | 78709Y105 | $260.3K | 0.03% | 618 | SH |
| 17 | LANDSTAR SYS INC | LSTR | 515098101 | $234.9K | 0.03% | 1,136 | SH |
| 18 | RUSH ENTERPRISES INC | RUSHA | 781846209 | $233.5K | 0.03% | 3,199 | SH |
| 19 | INSTALLED BLDG PRODS INC | IBP | 45780R101 | $229.8K | 0.02% | 1,000 | SH |
| 20 | UNIFIRST CORP MASS | UNF | 904708104 | $225.8K | 0.02% | 854 | SH |
| 21 | LANTHEUS HLDGS INC | LNTH | 516544103 | $223.8K | 0.02% | 2,017 | SH |
| 22 | FRONTDOOR INC | FTDR | 35905A109 | $218.1K | 0.02% | 2,811 | SH |
| 23 | INTERNATIONAL MONEY EXPRESS | IMXI | 46005L101 | $204.9K | 0.02% | 14,179 | SH |
| 24 | ADAPTHEALTH CORP | AHCO | 00653Q102 | $188.9K | 0.02% | 18,132 | SH |
| 25 | HILLMAN SOLUTIONS CORP | HLMN | 431636109 | $182.7K | 0.02% | 21,650 | SH |
| 26 | JANUS INTERNATIONAL GROUP IN | JBI | 47103N106 | $109.9K | 0.01% | 19,808 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $926.0M | 26 | 0001214659-26-010375 |
| 2026-03-31 | 2026-05-15 | $839.4M | 25 | 0001214659-26-006462 |
| 2025-12-31 | 2026-02-17 | $957.2M | 27 | 0001214659-26-001973 |
| 2025-09-30 | 2025-11-14 | $752.4M | 38 | 0001214659-25-016628 |