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Livermore
Livermore
ZHEN

Mariner, LLC

SEC CIK
0001373442
Latest filing
Aug 13, 2026

The latest 13F from Mariner, LLC covers Q2 2026 (filed Aug 13, 2026): 3,517 long positions worth $95.2B. The top 10 holdings make up 27.9% of the portfolio, and the largest is Apple Inc. (AAPL) at 5.5%. Livermore has 22 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
463
Est. +$458.6M
Added
1435
Est. +$4.84B
Reduced
1528
Est. −$5.82B
Sold out
491
Est. −$831.1M

Top 5 holdings

Share of this quarter's portfolio value

  1. AAPLApple Inc.
    5.5%$5.21BHistory
  2. NVDANVIDIA Corp
    5.5%$5.19BHistory
  3. iShares Core S&P 500 ETF464287200
    4.4%$4.17B
  4. Vanguard Ftse Developed Markets ETF921943858
    2.8%$2.64B
  5. MSFTMicrosoft Corp
    2.1%$2.04BHistory

Biggest buys

New and added positions, by estimated amount bought

  1. MUMicron Technology Inc
    +$489.0MAddedHistory
  2. JAZZJazz Pharmaceuticals plc
    +$137.0MAddedHistory
  3. TJXTJX Companies Inc
    +$114.9MAddedHistory
  4. iShares Core U.S. Aggregate Bond ETF464287226
    +$110.5MAdded
  5. Vanguard Ftse Developed Markets ETF921943858
    +$106.9MAdded

Largest weight increases

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

  1. MUMicron Technology Inc
    +0.94 pp0.2% → 1.1%History
  2. AMATApplied Materials Inc
    +0.29 pp0.2% → 0.5%History
  3. AAPLApple Inc.
    +0.23 pp5.2% → 5.5%History
  4. CRWDCrowdStrike Holdings, Inc.
    +0.23 pp0.3% → 0.5%History
  5. iShares Core S&P 500 ETF464287200
    +0.21 pp4.2% → 4.4%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. GLWCorning Inc
    −$177.2MReducedHistory
  2. HDHome Depot, Inc.
    −$150.9MReducedHistory
  3. MSFTMicrosoft Corp
    −$118.6MReducedHistory
  4. iShares Russell Top 200 Growth ETF464289438
    −$116.8MReduced
  5. HONHoneywell International Inc
    −$108.5MSold outHistory

Largest weight decreases

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

  1. MSFTMicrosoft Corp
    −0.36 pp2.5% → 2.1%History
  2. HDHome Depot, Inc.
    −0.17 pp0.4% → 0.3%History
  3. LDOSLeidos Holdings, Inc.
    −0.15 pp0.2% → <0.1%History
  4. XOMExxonMobil Holdings Corp
    −0.15 pp0.5% → 0.4%History
  5. WMTWalmart Inc.
    −0.15 pp0.7% → 0.6%History

Metrics

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

Portfolio value
$95.2B
+$9.54B (+11.1%) vs. prior quarter
Positions
3,517
−28 vs. prior quarter
Top 10 concentration
27.9%
Top 10 as share of value
Turnover
5.9%
Q2 2026, one quarter
Average holding period
20.5 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 $95.2B (Q2 2026)

Q1 2021: $14.3BQ2 2021: $16.1BQ3 2021: $19.2BQ4 2021: $23.6BQ1 2022: $26.5BQ2 2022: $24.4BQ3 2022: $25.0BQ4 2022: $31.1BQ1 2023: $34.4BQ2 2023: $37.4BQ3 2023: $37.3BQ4 2023: $42.2BQ1 2024: $48.4BQ2 2024: $51.6BQ3 2024: $56.4BQ4 2024: $59.6BQ1 2025: $60.1BQ2 2025: $69.3BQ3 2025: $77.4BQ4 2025: $84.0BQ1 2026: $85.7BQ2 2026: $95.2B
Q1 2021Q2 2026
13F filings of Mariner, LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 13, 20263,517$95.2BAAPLNVDAiShares Core S&P 500 ETFvs. Q1 2026SEC
Q1 2026May 13, 20263,545$85.7BNVDAAAPLiShares Core S&P 500 ETFvs. Q4 2025SEC
Q4 2025Feb 13, 20263,524$84.0BNVDAAAPLiShares Core S&P 500 ETFvs. Q3 2025SEC
Q3 2025Nov 14, 20253,542$77.4BAAPLNVDAiShares Core S&P 500 ETFvs. Q2 2025SEC
Q2 2025Aug 14, 20253,468$69.3BAAPLiShares Core S&P 500 ETFNVDAvs. Q1 2025SEC
Q1 2025May 15, 20253,429$60.1BAAPLiShares Core S&P 500 ETFNVDAvs. Q4 2024SEC
Q4 2024Feb 13, 20253,378$59.6BAAPLiShares Core S&P 500 ETFNVDAvs. Q3 2024SEC
Q3 2024Nov 13, 20243,285$56.4BAAPLiShares Core S&P 500 ETFNVDAvs. Q2 2024SEC
Q2 2024Aug 13, 20243,153$51.6BAAPLiShares Core S&P 500 ETFNVDAvs. Q1 2024SEC
Q1 2024May 15, 20243,127$48.4BiShares Core S&P 500 ETFAAPLMSFTvs. Q4 2023SEC
Q4 2023Feb 14, 20243,042$42.2BAAPLiShares Core S&P 500 ETFMSFTvs. Q3 2023SEC
Q3 2023Nov 13, 20232,893$37.3BAAPLiShares Core S&P 500 ETFMSFTvs. Q2 2023SEC
Q2 2023Aug 11, 20232,827$37.4BAAPLiShares Core S&P 500 ETFMSFTvs. Q1 2023SEC
Q1 2023May 15, 20232,779$34.4BAAPLiShares Core S&P 500 ETFVanguard Ftse Developed Markets ETFvs. Q4 2022SEC
Q4 2022Feb 14, 20232,737$31.1BiShares Core S&P 500 ETFAAPLVanguard Ftse Developed Markets ETFvs. Q3 2022SEC
Q3 2022Nov 10, 20222,443$25.0BiShares Core S&P 500 ETFAAPLVanguard Ftse Developed Markets ETFvs. Q2 2022SEC
Q2 2022Aug 15, 20221,370$24.4BiShares Core S&P 500 ETFAAPLVanguard Ftse Developed Markets ETFvs. Q1 2022SEC
Q1 2022May 13, 20221,379$26.5BiShares Core S&P 500 ETFAAPLVanguard Ftse Developed Markets ETFvs. Q4 2021SEC
Q4 2021Feb 14, 20221,151$23.6BiShares Core S&P 500 ETFAAPLVanguard Ftse Developed Markets ETFvs. Q3 2021SEC
Q3 2021Nov 15, 2021989$19.2BiShares Core S&P 500 ETFAAPLVanguard Ftse Developed Markets ETFvs. Q2 2021SEC
Q2 2021Aug 24, 2021911$16.1BiShares Core S&P 500 ETFAAPLMSFTvs. Q1 2021SEC
Q1 2021May 7, 2021856$14.3BiShares Core S&P 500 ETFAAPLMSFT–SEC