MP
Mbb Public Markets I LLC 13F Holdings & Position Changes (Q2 2026)
Mbb Public Markets I LLCCIK: 0001892378
Momentum followerSector-focusedQuality / disciplined sizing
Total reported value
$926.0M
Reporting period: 2026-06-30 · Number of holdings: 26
MBB PUBLIC MARKETS I LLC disclosed 26 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $926.0M and a quarterly turnover rate of 21.5%.
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Personality snowflake
- Concentration
- 65.01
- Portfolio Stability
- 21.49
- Momentum
- 100
- Sector conviction
- 93.61
- Diversification
- 50
- Sizing Uniformity
- 82.14
Mbb Public Markets I LLC's disclosed holdings carry a Herfindahl concentration index of 0.163 — mathematically equivalent to about 6 equally-sized positions, well below its 26 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.79), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 15.2 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd VTEB
+124.7% $45.8M
Trim MDLN
0.0% -$12.4M
Add AMZN
+5.1% $29.5M
Trim GOOGL
-55.6% -$11.6M
Trim TECK
-62.8% -$9.6M
Add PGR
+5.7% $29.1M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 25 holdings (of 26 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | PGR | Progressive CORP | Stock-Financials | 22.21% | +1.18% | +5.72% | |
| 2 | AER | AerCap Holdings N.V. | Stock-Industrials | 19.27% | +0.75% | +8.02% | |
| 3 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 18.96% | +1.56% | +5.05% | |
| 4 | FERG | Ferguson Enterprises Inc | Stock-Industrials | 14.29% | -0.38% | +5.68% | |
| 5 | MDLN | Medline Inc-cl A | Stock-Other | 10.40% | -2.54% | — | |
| 6 | VTEB | Vanguard Tax-exempt Bond ETF | ETF-Other | 8.82% | +4.55% | +124.68% | |
| 7 | EQT | Eqt CORP | Stock-Energy | 2.73% | -0.87% | — | |
| 8 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 1.54% | -1.54% | -55.56% | |
| 9 | TECK | Teck Resources Ltd-cls B | Stock-Materials | 0.77% | -1.22% | -62.80% | |
| 10 | KYTX | Kyverna Therapeutics Inc | Stock-Other | 0.59% | -0.04% | — | |
| 11 | GTX | Garrett Motion Inc | Stock-Consumer Disc | 0.06% | +0.03% | — | |
| 12 | ESI | Element Solutions Inc | Stock-Materials | 0.04% | +0.01% | — | |
| 13 | AMG | Affiliated Managers Group | Stock-Financials | 0.03% | — | — | |
| 14 | VMD | Viemed Healthcare Inc | Stock-Other | 0.03% | — | — | |
| 15 | SAIA | Saia Inc | Stock-Industrials | 0.03% | — | — | |
| 16 | LSTR | Landstar System Inc | Stock-Industrials | 0.03% | +0.03% | NEW | |
| 17 | RUSHA | Rush Enterprises Inc-cl A | Stock-Consumer Disc | 0.03% | — | — | |
| 18 | IBP | Installed Building Products | Stock-Consumer Disc | 0.02% | -0.01% | — | |
| 19 | UNF | Unifirst Corp/ma | Stock-Other | 0.02% | -0.01% | — | |
| 20 | LNTH | Lantheus Holdings Inc | Stock-Healthcare | 0.02% | +0.02% | NEW | |
| 21 | FTDR | Frontdoor Inc | Stock-Consumer Disc | 0.02% | +0.02% | NEW | |
| 22 | IMXI | International Money Express | Stock-Other | 0.02% | -0.01% | — | |
| 23 | AHCO | Adapthealth CORP | Stock-Other | 0.02% | -0.01% | — | |
| 24 | HLMN | Hillman Solutions CORP | Stock-Other | 0.02% | — | — | |
| 25 | JBI | Janus International Group In | Stock-Other | 0.01% | — | — |
Portfolio Performance
Performance for Q3 2026
+3.1%
Performance Last 4 Quarters
+14.5%
- Stdev
- +14.4%
- Beta
- +0.84
- Alpha
- -4.6%
- Max Drawdown
- -13.2%
- Annualized Perf
- +11.7%
- Batting Avg vs S&P
- +44.4%
- Sortino
- +1.48
- Stutzer
- +0.25
- Treynor
- +0.15
- Sterling
- +0.66
- Calmar
- +0.89
- Information Ratio
- -0.8
- Tracking Error
- +9.8%
- Stdev Down
- +8.2%
- Winning Months %
- +55.6%
- Losing Months %
- +44.4%
- Best 12 Months
- +33.6%
- Worst 12 Months
- -5.2%
- Efficiency Ratio
- +0.3
- Sharpe
- +0.84
- Stdev Sectors
- +15.5%
- Skewness
- -0.06
- Kurtosis
- -0.61
- Upside Potential
- +3.38
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 26 | $926.0M | 21 | ||
| 2026 Q1 | 25 | $839.4M | 21 | ||
| 2025 Q4 | 27 | $957.2M | 41 | ||
| 2025 Q3 | 38 | $752.4M | 87 | ||
| 2025 Q2 | 503 | $1.1B | 0 | ||
| 2025 Q1 | 531 | $906.6M | 0 | ||
| 2024 Q4 | 84 | $1.1B | 0 | ||
| 2024 Q3 | 560 | $1.8B | 0 | ||
| 2024 Q2 | 693 | $4.9B | 0 | ||
| 2024 Q1 | 287 | $1.6B | 0 | ||
| 2023 Q4 | 110 | $1.6B | 0 | ||
| 2023 Q3 | 128 | $1.7B | 0 | ||
| 2023 Q2 | 127 | $1.9B | 0 | ||
| 2023 Q1 | 99 | $1.8B | 0 | ||
| 2022 Q4 | 104 | $3.7B | 0 | ||
| 2022 Q3 | 100 | $3.8B | 0 | ||
| 2022 Q2 | 102 | $4.2B | 0 | ||
| 2022 Q1 | 82 | $4.9B | 0 | ||
| 2021 Q4 | 482 | $5.1B | 0 |
Holding changes this quarter
Mbb Public Markets I LLC's most significant position changes for 2026-06-30: Sold out: Bunge Global SA (BG); Sold out: Broadcom Inc (AVGO); New buy: Landstar System Inc (LSTR); New buy: Lantheus Holdings Inc (LNTH); New buy: Frontdoor Inc (FTDR).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | VTEB | Vanguard Tax-exempt Bond ETF | +4.6% | +124.68% | Add |
| 2 | AMZN | Amazon.com Inc | +1.6% | +5.05% | Add |
| 3 | PGR | Progressive CORP | +1.2% | +5.72% | Add |
| 4 | AER | AerCap Holdings N.V. | +0.8% | +8.02% | Add |
| 5 | GTX | Garrett Motion Inc | 0% | — | Unchanged |
| 6 | LSTR | Landstar System Inc | 0% | NEW | New buy |
| 7 | LNTH | Lantheus Holdings Inc | 0% | NEW | New buy |
| 8 | FTDR | Frontdoor Inc | 0% | NEW | New buy |
| 9 | ESI | Element Solutions Inc | 0% | — | Unchanged |
| 10 | AMG | Affiliated Managers Group | — | — | Unchanged |
| 11 | VMD | Viemed Healthcare Inc | — | — | Unchanged |
| 12 | SAIA | Saia Inc | — | — | Unchanged |
| 13 | RUSHA | Rush Enterprises Inc-cl A | — | — | Unchanged |
| 14 | JBI | Janus International Group In | — | — | Unchanged |
| 15 | HLMN | Hillman Solutions CORP | — | — | Unchanged |
| 16 | IBP | Installed Building Products | 0% | — | Unchanged |
| 17 | AHCO | Adapthealth CORP | 0% | — | Unchanged |
| 18 | IMXI | International Money Express | 0% | — | Unchanged |
| 19 | UNF | Unifirst Corp/ma | 0% | — | Unchanged |
| 20 | KYTX | Kyverna Therapeutics Inc | 0% | — | Unchanged |
| 21 | AVGO | Broadcom Inc | -0.4% | EXIT | Sold out |
| 22 | FERG | Ferguson Enterprises Inc | -0.4% | +5.68% | Add |
| 23 | EQT | Eqt CORP | -0.9% | — | Unchanged |
| 24 | BG | Bunge Global SA | -1.2% | EXIT | Sold out |
| 25 | TECK | Teck Resources Ltd-cls B | -1.2% | -62.80% | Trim |
| 26 | GOOGL | Alphabet Inc-cl A | -1.5% | -55.56% | Trim |
| 27 | MDLN | Medline Inc-cl A | -2.5% | — | Unchanged |
Filing History
FAQ
What is Mbb Public Markets I LLC and what type of investor is it?
Mbb Public Markets I LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $926.0M, spread across 26 disclosed positions.
What are Mbb Public Markets I LLC's largest equity positions?
Based on the latest 13F filing, Mbb Public Markets I LLC's top holdings by market value are:
1. Progressive CORP (PGR) — $205.7M (22.2%)
2. AerCap Holdings N.V. (AER) — $178.5M (19.3%)
3. Amazon.com Inc (AMZN) — $175.6M (19.0%)
4. Ferguson Enterprises Inc (FERG) — $132.4M (14.3%)
5. Medline Inc-cl A (MDLN) — $96.3M (10.4%)
What changes did Mbb Public Markets I LLC make in its most recent portfolio filing?
In the latest reported quarter, Mbb Public Markets I LLC made 12 notable position adjustments: 3 new positions were initiated, 5 existing holdings were added to, 2 positions were partially reduced, and 2 were completely exited. The largest of these moves: Sold out: Bunge Global SA (BG); Sold out: Broadcom Inc (AVGO); New buy: Landstar System Inc (LSTR); New buy: Lantheus Holdings Inc (LNTH); New buy: Frontdoor Inc (FTDR)
What sectors does Mbb Public Markets I LLC focus on?
Mbb Public Markets I LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Industrials: 42.0%
• Financials: 27.8%
• Consumer Discretionary: 23.9%
• Energy: 3.4%
• Communication Services: 1.9%
• Materials: 1.0%
Investment Profile
Mbb Public Markets I LLC returned an annualized 11.7% over the trailing 36 months — underperforming the S&P 500 by 4.6 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.84 (less volatile than the market) and a 44% quarterly batting average against the index.
Its portfolio is concentrated and moderately active, with 42.0% of the portfolio concentrated in Industrials.
Its concentration score has risen from 27 to 65 over the past 4 quarters — a shift toward higher-conviction positions.
It has added to its VTEB position over the past two quarters (+$53.6M, now $81.7M), while trimming GOOGL over the same stretch (-$35.2M, still holding $14.3M).
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Developer Access
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