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Livermore
Livermore
ZHEN

Main Street Group, LTD

SEC CIK
0001965796
Latest filing
Jul 13, 2026

The latest 13F from Main Street Group, LTD covers Q2 2026 (filed Jul 13, 2026): 863 long positions worth $429.2M. The top 10 holdings make up 71.8% of the portfolio, and the largest is ProShares Tr at 23.5%. Livermore has 11 filings on Form 13F from this institution, going back to Q4 2023.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
68
Est. +$1.80M
Added
113
Est. +$22.7M
Reduced
141
Est. −$8.28M
Sold out
70
Est. −$1.28M

Top 5 holdings

Share of this quarter's portfolio value

  1. ProShares Tr74347R206
    23.5%$100.9M
  2. ProShares Tr74347R107
    18.8%$80.5M
  3. Pgim ETF Tr69344A107
    8.5%$36.6M
  4. Pgim ETF Tr69344A834
    7.1%$30.6M
  5. Vanguard Ftse All-World Ex-US Index Fund922042775
    4.3%$18.5M

Biggest buys

New and added positions, by estimated amount bought

  1. Pgim ETF Tr69344A834
    +$7.18MAdded
  2. Vanguard Ftse All-World Ex-US Index Fund922042775
    +$5.62MAdded
  3. Pgim ETF Tr69344A107
    +$3.94MAdded
  4. ProShares Tr74347R107
    +$2.18MAdded
  5. ProShares Tr74347R206
    +$1.14MAdded

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. ProShares Tr74347R206
    +5.03 pp18.5% → 23.5%
  2. ProShares Tr74347R107
    +1.04 pp17.7% → 18.8%
  3. Vanguard Ftse All-World Ex-US Index Fund922042775
    +0.92 pp3.4% → 4.3%
  4. Pgim ETF Tr69344A834
    +0.26 pp6.9% → 7.1%
  5. AB Active ETFs Inc00039J509
    +0.07 pp0.0% → 0.1%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. State Street Energy Select Sector SPDR ETF81369Y506
    −$3.42MReduced
  2. Schwab Strategic Tr808524862
    −$732.5KReduced
  3. AAPLApple Inc.
    −$389.5KReducedHistory
  4. US Treasur NT 0.750526UST Note Due 05312691282CCF6
    −$329.3KSold out
  5. MSFTMicrosoft Corp
    −$327.5KReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. State Street Energy Select Sector SPDR ETF81369Y506
    −1.18 pp1.2% → <0.1%
  2. MSFTMicrosoft Corp
    −0.59 pp2.5% → 2.0%History
  3. Schwab Strategic Tr808524862
    −0.44 pp1.3% → 0.8%
  4. US Treasu NT 0.6250726UST Note Due 07312691282CCP4
    −0.25 pp1.2% → 0.9%
  5. Ea Series Trust02072L565
    −0.24 pp1.1% → 0.9%

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$429.2M
+$88.8M (+26.1%) vs. prior quarter
Positions
863
−2 vs. prior quarter
Top 10 concentration
71.8%
Top 10 as share of value
Turnover
2.5%
Q2 2026, one quarter
Average holding period
8.8 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q4 2023), so positions held before then are understated.

13F filings by quarter

11 quarters, going back to Q4 2023. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $429.2M (Q2 2026)

Q4 2023: $287.6MQ1 2024: $229.4MQ2 2024: $240.5MQ3 2024: $253.7MQ4 2024: $269.6MQ1 2025: $259.6MQ2 2025: $307.4MQ3 2025: $341.5MQ4 2025: $289.9MQ1 2026: $340.4MQ2 2026: $429.2M
Q4 2023Q2 2026
13F filings of Main Street Group, LTD by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 13, 2026863$429.2MProShares TrProShares TrPgim ETF Trvs. Q1 2026SEC
Q1 2026May 6, 2026865$340.4MProShares TrProShares TrPgim ETF Trvs. Q4 2025SEC
Q4 2025Jan 26, 202690$289.9MProShares TrProShares TrPgim ETF Trvs. Q3 2025SEC
Q3 2025Nov 7, 2025826$341.5MProShares TrProShares TrPgim ETF Trvs. Q2 2025SEC
Q2 2025Jul 15, 2025812$307.4MProShares TrProShares TrPgim ETF Trvs. Q1 2025SEC
Q1 2025May 14, 2025826$259.6MProShares TrProShares TrPgim ETF Trvs. Q4 2024SEC
Q4 2024Feb 14, 2025806$269.6MProShares TrProShares TrPgim ETF Trvs. Q3 2024SEC
Q3 2024Nov 13, 2024810$253.7MProShares TrProShares TrPgim ETF Trvs. Q2 2024SEC
Q2 2024Aug 6, 2024901$240.5MProShares TrProShares TrPgim ETF Trvs. Q1 2024SEC
Q1 2024May 15, 2024945$229.4MProShares TrProShares TrPgim ETF Trvs. Q4 2023SEC
Q4 2023Feb 15, 20241,326$287.6MProShares TrProShares TrPIMCO–SEC