Q2 2026 13F · SEC CIK 1892378

Mbb Public Markets I LLC

Investment managerFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $925.7M
Reported positions: 25
Top holdings a year, 3 yrs: +12.3%
Average holding period: 1.6 yrs

Mbb Public Markets I LLC is an investment manager that reported 25 positions worth $925.7M in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Progressive Corp (PGR, 22.2%), Aercap Holdings NV (AER, 19.3%), Amazon Com Inc (AMZN, 18.9%). A portfolio copying its top holdings returned 12.3% a year over the last 3 years, against 22.3% for the S&P 500.

Mbb Public Markets I LLC holdings all 25 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Mbb Public Markets I LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
PGRProgressive Corp	22.2%	21.1%	941,511	+5.7%	$205.7M
AERAercap Holdings NV	19.3%	18.6%	1,224,242	+8.0%	$178.5M
AMZNAmazon Com Inc	18.9%	17.0%	735,480	+8.0%	$175.3M
FERGFerguson Enterprises Inc Common Stock Ne	14.3%	14.7%	557,772	+5.7%	$132.4M
MDLNMedline Inc	10.4%	13.0%	2,441,379	+0.0%	$96.3M
VTEBVanguard Mun Bd Fds	8.8%	4.3%	1,614,405	+124.7%	$81.7M
EQTEqt Corp	2.7%	3.6%	475,000	+0.0%	$25.3M
GOOGLAlphabet Inc	1.5%	3.1%	40,000	-55.6%	$14.3M
TECKTeck Resources Ltd	0.8%	2.0%	120,228	-62.8%	$7.1M
KYTXKyverna Therapeutics Inc.	0.6%	0.6%	614,477	+0.0%	$5.5M
GTXGarrett Motion Inc	0.1%	0.0%	15,768	+0.0%	$571K
ESIElement Solutions Inc	0.0%	0.0%	7,444	+0.0%	$355K
AMGAffiliated Managers Group	0.0%	0.0%	894	+0.0%	$303K
VMDViemed Healthcare Inc	0.0%	0.0%	23,384	+0.0%	$267K
SAIASaia Inc	0.0%	0.0%	618	+0.0%	$260K
LSTRLandstar Systems Inc	0.0%	New	1,136	—	$235K
RUSHARush Enterprises Inc	0.0%	0.0%	3,199	+0.0%	$233K
IBPInstalled Building Products, Inc.	0.0%	0.0%	1,000	+0.0%	$230K
UNFUnifirst Corp Mass	0.0%	0.0%	854	+0.0%	$226K
LNTHLantheus Hldgs Inc	0.0%	New	2,017	—	$224K
FTDRFrontdoor Inc	0.0%	New	2,811	—	$218K
IMXIInternational Money Express	0.0%	0.0%	14,179	+0.0%	$205K
AHCOAdapthealth Corp Common Stock	0.0%	0.0%	18,132	+0.0%	$189K
HLMNHillman Solutions Corp	0.0%	0.0%	21,650	+0.0%	$183K
JBIJanus International Group in	0.0%	0.0%	19,808	+0.0%	$110K

What Mbb Public Markets I LLC bought and sold in Q2 2026, against Q1 2026.

New positions

Share counts compared with the Q1 2026 13F; a split also changes share counts.

How the holdings did against the S&P 500.

1 year: +8.7% /yr; S&P 500 +11.7%
3 years: +12.3% /yr; S&P 500 +22.3%
5 years: +4.5% /yr; S&P 500 +12.0%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$925.7M	25
Q1 2026	$835.2M	24
Q4 2025	$957.2M	27
Q3 2025	$750.7M	36
Q2 2025	$868.8M	497
Q1 2025	$867.8M	523
Q4 2024	$843.9M	58
Q3 2024	$1.2B	534
Q2 2024	$4.8B	671
Q1 2024	$1.6B	268
Q4 2023	$1.6B	91
Q3 2023	$1.5B	102

Questions about Mbb Public Markets I LLC's portfolio

What stocks does Mbb Public Markets I LLC own?

Mbb Public Markets I LLC's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 25 positions worth $925.7M. The largest are Progressive Corp (PGR) at 22.2%, Aercap Holdings NV (AER) at 19.3%, Amazon Com Inc (AMZN) at 18.9%, Ferguson Enterprises Inc Common Stock Ne (FERG) at 14.3% and Medline Inc (MDLN) at 10.4%.

What did Mbb Public Markets I LLC buy last quarter?

In Q2 2026, Mbb Public Markets I LLC added a new position in Landstar Systems Inc (LSTR), a new position in Lantheus Hldgs Inc (LNTH), a new position in Frontdoor Inc (FTDR), Vanguard Mun Bd Fds (VTEB) (+124.7% shares), Aercap Holdings NV (AER) (+8.0% shares) and Amazon Com Inc (AMZN) (+8.0% shares), compared with its Q1 2026 filing.

What did Mbb Public Markets I LLC sell last quarter?

In Q2 2026, Mbb Public Markets I LLC sold all of Bunge Global SA (BG), sold all of Broadcom Inc (AVGO), Teck Resources Ltd (TECK) (-62.8% shares) and Alphabet Inc (GOOGL) (-55.6% shares), compared with its Q1 2026 filing.

How has Mbb Public Markets I LLC's portfolio performed?

A portfolio copying Mbb Public Markets I LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +12.3% a year over the last 3 years, against +22.3% for the S&P 500. Over 1 year: +8.7% against +11.7%. Over 5 years: +4.5% a year against +12.0%.

When is Mbb Public Markets I LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Mbb Public Markets I LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.