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Livermore
Livermore
ZHEN

Meridian Management Co

SEC CIK
0000806097
Latest filing
Aug 4, 2026

The latest 13F from Meridian Management Co covers Q2 2026 (filed Aug 4, 2026): 84 long positions worth $445.6M. The top 10 holdings make up 53.0% of the portfolio, and the largest is Vanguard Ftse Developed Markets ETF at 9.5%. Livermore has 23 filings on Form 13F from this institution, going back to Q1 2021.

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
11
Est. +$17.3M
Added
14
Est. +$23.9M
Reduced
27
Est. −$19.9M
Sold out
8
Est. −$14.8M

Top 5 holdings

Share of this quarter's portfolio value

  1. Vanguard Ftse Developed Markets ETF921943858
    9.5%$42.1M
  2. Vanguard Intermediate-Term Corporate Bond ETF92206C870
    7.9%$35.4M
  3. iShares Core S&P 500 ETF464287200
    7.9%$35.0M
  4. iShares Tr464288612
    5.5%$24.4M
  5. iShares Core S&P Mid-Cap ETF464287507
    5.3%$23.4M

Biggest buys

New and added positions, by estimated amount bought

  1. iShares Core U.S. Aggregate Bond ETF464287226
    +$11.4MAdded
  2. MSFTMicrosoft Corp
    +$3.54MAddedHistory
  3. LLYEli Lilly & Co
    +$2.71MNewHistory
  4. CDNSCadence Design Systems Inc
    +$2.58MNewHistory
  5. Vanguard Intermediate-Term Corporate Bond ETF92206C870
    +$2.52MAdded

Largest weight increases

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

  1. iShares Core U.S. Aggregate Bond ETF464287226
    +2.38 pp1.8% → 4.1%
  2. MSFTMicrosoft Corp
    +0.74 pp0.6% → 1.3%History
  3. LLYEli Lilly & Co
    +0.61 pp0.0% → 0.6%History
  4. CDNSCadence Design Systems Inc
    +0.58 pp0.0% → 0.6%History
  5. ISRGIntuitive Surgical Inc
    +0.56 pp0.0% → 0.6%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. iShares Tips Bond ETF464287176
    −$9.50MReduced
  2. ADBEAdobe Inc.
    −$3.70MSold outHistory
  3. INTUIntuit Inc.
    −$3.70MSold outHistory
  4. APDAir Products & Chemicals, Inc.
    −$3.19MSold outHistory
  5. CVXChevron Corp
    −$2.90MSold outHistory

Largest weight decreases

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

  1. iShares Tips Bond ETF464287176
    −2.39 pp2.5% → 0.1%
  2. ADBEAdobe Inc.
    −0.92 pp0.9% → 0.0%History
  3. INTUIntuit Inc.
    −0.92 pp0.9% → 0.0%History
  4. APDAir Products & Chemicals, Inc.
    −0.79 pp0.8% → 0.0%History
  5. CVXChevron Corp
    −0.72 pp0.7% → 0.0%History

Metrics

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

Portfolio value
$445.6M
+$43.6M (+10.9%) vs. prior quarter
Positions
84
+3 vs. prior quarter
Top 10 concentration
53.0%
Top 10 as share of value
Turnover
8.2%
Q2 2026, one quarter
Average holding period
16.7 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 (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $445.6M (Q2 2026)

Q1 2021: $321.6MQ2 2021: $339.2MQ3 2021: $326.2MQ4 2021: $345.0MQ1 2022: $315.3MQ2 2022: $258.4MQ3 2022: $250.6MQ4 2022: $273.8MQ1 2023: $304.9MQ2 2023: $319.3MQ3 2023: $306.5MQ4 2023: $351.7MQ1 2024: $366.2MQ2 2024: $364.2MQ3 2024: $393.8MQ4 2024: $379.3MQ1 2025: $322.9MQ2 2025: $365.8MQ3 2025: $373.6MQ4 2025: $403.9MQ1 2026: $401.9MQ2 2026: $445.6M
Q1 2021Q2 2026
13F filings of Meridian Management Co by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 4, 202684$445.6MVanguard Ftse Developed Markets ETFVanguard Intermediate-Term Corporate Bond ETFiShares Core S&P 500 ETFvs. Q1 2026SEC
Q1 2026May 5, 202681$401.9MVanguard Ftse Developed Markets ETFVanguard Intermediate-Term Corporate Bond ETFiShares Core S&P 500 ETFvs. Q4 2025SEC
Q4 2025Feb 10, 202680$403.9MVanguard Ftse Developed Markets ETFiShares Core S&P 500 ETFVanguard Intermediate-Term Corporate Bond ETFvs. Q3 2025SEC
Q3 2025Nov 3, 202581$373.6MVanguard Ftse Developed Markets ETFiShares Core S&P 500 ETFVanguard Intermediate-Term Corporate Bond ETFvs. Q2 2025SEC
Q2 2025Aug 5, 202576$365.8MVanguard Ftse Developed Markets ETFiShares Core S&P 500 ETFVanguard Intermediate-Term Corporate Bond ETFvs. Q1 2025SEC
Q1 2025May 7, 2025Amended71$322.9MVanguard Ftse Developed Markets ETFiShares Core S&P 500 ETFVanguard Intermediate-Term Corporate Bond ETFvs. Q4 2024SEC
Q4 2024Feb 12, 2025100$379.3MiShares Core S&P 500 ETFVanguard Ftse Developed Markets ETFVanguard Intermediate-Term Corporate Bond ETFvs. Q3 2024SEC
Q3 2024Nov 4, 202493$393.8MiShares Core S&P 500 ETFVanguard Ftse Developed Markets ETFVanguard Ftse Emerging Markets ETFvs. Q2 2024SEC
Q2 2024Aug 8, 202497$364.2MiShares Core S&P 500 ETFVanguard Ftse Developed Markets ETFVanguard Ftse Emerging Markets ETFvs. Q1 2024SEC
Q1 2024May 2, 2024101$366.2MiShares Core S&P 500 ETFVanguard Ftse Developed Markets ETFVanguard Ftse Emerging Markets ETFvs. Q4 2023SEC
Q4 2023Feb 12, 202496$351.7MiShares Core S&P 500 ETFVanguard Ftse Developed Markets ETFVanguard Ftse Emerging Markets ETFvs. Q3 2023SEC
Q3 2023Nov 3, 202395$306.5MiShares TriShares Core S&P 500 ETFSchwab U.S. Small-Cap ETFvs. Q2 2023SEC
Q2 2023Aug 14, 202393$319.3MiShares TriShares Core S&P 500 ETFSchwab U.S. Small-Cap ETFvs. Q1 2023SEC
Q1 2023May 2, 202391$304.9MiShares TriShares Core S&P 500 ETFSchwab U.S. Small-Cap ETFvs. Q4 2022SEC
Q4 2022Feb 9, 202372$273.8MiShares TriShares Core S&P 500 ETFSchwab U.S. Small-Cap ETFvs. Q3 2022SEC
Q3 2022Nov 8, 202271$250.6MiShares TriShares Core S&P 500 ETFiShares Trvs. Q2 2022SEC
Q2 2022Aug 5, 202271$258.4MiShares TriShares Core S&P 500 ETFiShares Trvs. Q1 2022SEC
Q1 2022May 10, 202284$315.3MiShares TriShares Core S&P 500 ETFSchwab U.S. Small-Cap ETFvs. Q4 2021SEC
Q4 2021Feb 10, 202275$345.0MiShares TriShares InciShares Core S&P 500 ETFvs. Q3 2021SEC
Q3 2021Nov 10, 202177$326.2MiShares TriShares InciShares Core S&P 500 ETFvs. Q2 2021SEC
Q2 2021Aug 16, 202180$339.2MiShares InciShares TriShares Core S&P 500 ETFvs. Q1 2021SEC
Q1 2021May 10, 202178$321.6MiShares Core S&P 500 ETFiShares TriShares Inc–SEC