MBB Public Markets I LLC holds a concentrated book of 24 stocks worth $835.2M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Element Solutions Inc and trimmed Eqt Corp. Their largest long position is Progressive Corp at 21% of the equity book. They also disclosed $4.2M in call options (bullish), shown separately below and excluded from the equity book.
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Use Arkolith to show MBB PUBLIC MARKETS I LLC's latest holdings, largest changes, and filing provenance.
Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
96% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Progressive Corp COM | $176.5M | 890.6K | 21.1% | ▲+2.9% Added · +25K sh | |
| 2 | Aercap Holdings NV SHS | $155.5M | 1.13M | 18.6% | —Held | |
| 3 | Amazon Com Inc COM | $141.9M | 681.3K | 17.0% | ▲+7.1% Added · +45K sh | |
| 4 | Ferguson Enterprises Inc COMMON STOCK NEW | $123.1M | 527.8K | 14.7% | ▲+13% Added · +60K sh | |
| 5 | Medline Inc COM CL A | $108.6M | 2.44M | 13.0% | —Held | |
| 6 | Vanguard Mun BD FDS TAX EXEMPT BD | $35.8M | 718.5K | 4.3% | ▲+29% Added · +160K sh | |
| 7 | Eqt Corp COM | $30.2M | 475.0K | 3.6% | ▼−23% Reduced · −142K sh | |
| 8 | Alphabet Inc CAP STK CL A | $25.9M | 90.0K | 3.1% | ▼−43% Reduced · −68K sh | |
| 9 | Teck Resources Ltd CL B | $16.7M | 323.2K | 2.0% | ▼−43% Reduced · −240K sh | |
| 10 | Bunge Global Sa COM SHS | $9.8M | 77.4K | 1.2% | ▼−23% Reduced · −23K sh | |
| 11 | Kyverna Therapeutics Inc COM | $5.3M | 614.5K | 0.6% | —Held | |
| 12 | Broadcom Inc COM | $3.1M | 10.0K | 0.4% | ▼−85% Reduced · −55K sh | |
| 13 | Garrett Motion Inc COM | $287K | 15.8K | 0.0% | —Held | |
| 14 | Installed BLDG Prods Inc COM | $265K | 1.0K | 0.0% | —Held | |
| 15 | Element Solutions Inc COM | $254K | 7.4K | 0.0% | ▲New New position | |
| 16 | Affiliated Managers Group COM | $247K | 894 | 0.0% | —Held | |
| 17 | International Money Express COM | $224K | 14.2K | 0.0% | —Held | |
| 18 | Saia Inc COM | $217K | 618 | 0.0% | —Held | |
| 19 | Adapthealth Corp COMMON STOCK | $216K | 18.1K | 0.0% | —Held | |
| 20 | Viemed Healthcare Inc COM | $215K | 23.4K | 0.0% | —Held | |
| 21 | Unifirst Corp Mass COM | $215K | 854 | 0.0% | ▲New New position | |
| 22 | Rush Enterprises Inc CL A | $211K | 3.2K | 0.0% | ▲New New position | |
| 23 | Hillman Solutions Corp COM | $180K | 21.6K | 0.0% | —Held | |
| 24 | Janus International Group In COMMON STOCK | $102K | 19.8K | 0.0% | —Held |
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| CALL · bullish | AMAZON.COM INCAMZN | $4.2M | 20K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.
As-of date vs the date the SEC received each filing
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.