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Livermore
Livermore
ZHEN

Mariner Investment Group LLC

SEC CIK
0001096978
Latest filing
Jul 24, 2026

The latest 13F from Mariner Investment Group LLC covers Q2 2026 (filed Jul 24, 2026): 75 long positions worth $426.3M. The top 10 holdings make up 76.2% of the portfolio, and the largest is iShares Bitcoin Trust ETF (IBIT) at 24.4%. Livermore has 20 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
29
Est. +$144.4M
Added
13
Est. +$10.1M
Reduced
3
Est. −$5.45M
Sold out
9
Est. −$32.1M

Top 5 holdings

Share of this quarter's portfolio value

  1. IBITiShares Bitcoin Trust ETF
    24.4%$104.2MHistory
  2. SPYSPDR S&P 500 ETF Trust
    13.4%$57.1MHistory
  3. Alibaba Group Hldg Ltd01609WBG6
    8.3%$35.4M
  4. Fluor Corp343412AJ1
    7.8%$33.3M
  5. DoorDash, Inc.25809KAB1
    5.8%$24.7M

Share of portfolio

Top 5 holdings and the other 70 positions, by share of portfolio value

  1. IBIT24.4%
  2. SPY13.4%
  3. Alibaba Group Hldg Ltd8.3%
  4. Fluor Corp7.8%
  5. DoorDash, Inc.5.8%
  6. Other 70 positions40.3%

Biggest buys

New and added positions, by estimated amount bought

  1. SPYSPDR S&P 500 ETF Trust
    +$57.1MNewHistory
  2. DoorDash, Inc.25809KAB1
    +$24.7MNew
  3. Rivian Automotive, Inc.76954AAD5
    +$16.0MNew
  4. Akamai Technologies Inc00971TAQ4
    +$11.0MNew
  5. iShares Tr464288414
    +$4.89MNew

Largest weight increases

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

  1. SPYSPDR S&P 500 ETF Trust
    +13.40 pp0.0% → 13.4%History
  2. DoorDash, Inc.25809KAB1
    +5.78 pp0.0% → 5.8%
  3. Rivian Automotive, Inc.76954AAD5
    +3.76 pp0.0% → 3.8%
  4. Akamai Technologies Inc00971TAQ4
    +2.57 pp0.0% → 2.6%
  5. iShares Tr464288414
    +1.15 pp0.0% → 1.1%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. Snowflake Inc.833445AB5
    −$17.7MSold out
  2. Live Nation Entertainment IN538034BA6
    −$7.61MSold out
  3. FOURShift4 Payments, Inc.
    −$4.62MReducedHistory
  4. CATCaterpillar Inc
    −$2.69MSold outHistory
  5. SOLSSolstice Advanced Materials Inc.
    −$1.14MSold outHistory

Largest weight decreases

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

  1. Snowflake Inc.833445AB5
    −5.38 pp5.4% → 0.0%
  2. Live Nation Entertainment IN538034BA6
    −2.31 pp2.3% → 0.0%
  3. FOURShift4 Payments, Inc.
    −1.35 pp1.9% → 0.6%History
  4. CATCaterpillar Inc
    −0.82 pp0.8% → 0.0%History
  5. SOLSSolstice Advanced Materials Inc.
    −0.35 pp0.3% → 0.0%History

Metrics

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

Portfolio value
$426.3M
+$96.4M (+29.2%) vs. prior quarter
Positions
75
+20 vs. prior quarter
Top 10 concentration
76.2%
Top 10 as share of value
Turnover
9.9%
Q2 2026, one quarter
Average holding period
3.1 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

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

Peak $1.70B (Q4 2025)

Q1 2021: $40.2MQ2 2021: $45.5MQ3 2021: $36.8MQ4 2021: $235.6MQ1 2022: $79.0MQ2 2022: $94.2MQ3 2022: $88.3MQ4 2022: $33.1MQ1 2023: $3.28MQ4 2023: $368.4MQ1 2024: $319.3MQ2 2024: $462.3MQ3 2024: $370.2MQ4 2024: $503.4MQ1 2025: $253.1MQ2 2025: $276.8MQ3 2025: $323.6MQ4 2025: $1.70BQ1 2026: $329.9MQ2 2026: $426.3M
Q1 2021Q2 2026
13F filings of Mariner Investment Group LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 24, 202675$426.3MIBITSPYAlibaba Group Hldg Ltdvs. Q1 2026SEC
Q1 2026May 5, 202655$329.9MIBITAlibaba Group Hldg LtdFluor Corpvs. Q4 2025SEC
Q4 2025Feb 25, 202671$1.70BMSFTLRCXGOOGvs. Q3 2025SEC
Q3 2025Nov 14, 202548$323.6MIBITSPYiShares Iboxx $ Investment Grade Corporate Bond ETFvs. Q2 2025SEC
Q2 2025Jul 16, 202548$276.8MSPYIBITJFRvs. Q1 2025SEC
Q1 2025May 5, 202527$253.1MSPYInvesco Exch Traded FD Tr IIJFRvs. Q4 2024SEC
Q4 2024Jan 22, 202536$503.4MSPYInvesco Exch Traded FD Tr IIFDXvs. Q3 2024SEC
Q3 2024Oct 29, 202424$370.2MSPYInvesco Exch Traded FD Tr IIJanus Detroit STR Trvs. Q2 2024SEC
Q2 2024Jul 24, 202417$462.3MSPYInvesco Exch Traded FD Tr IISsga Active ETF Trvs. Q1 2024SEC
Q1 2024May 14, 202418$319.3MSPYInvesco Exch Traded FD Tr IISsga Active ETF Trvs. Q4 2023SEC
Q4 2023Feb 15, 202418$368.4MSPYInvesco Exch Traded FD Tr IISsga Active ETF Tr–SEC
Q1 2023May 12, 202320$3.28MiShares TrBLEMYDvs. Q4 2022SEC
Q4 2022Feb 14, 202381$33.1MHTZSEVNMMUvs. Q3 2022SEC
Q3 2022Nov 14, 2022176$88.3MWayfair Inc.HTZAvaya Hldgs Corpvs. Q2 2022SEC
Q2 2022Aug 9, 2022184$94.2MAvaya Hldgs CorpHTZNUVvs. Q1 2022SEC
Q1 2022May 12, 2022157$79.0MHTZAvaya Hldgs CorpSEVNvs. Q4 2021SEC
Q4 2021Feb 9, 2022177$235.6MSPYHTZAvaya Hldgs Corpvs. Q3 2021SEC
Q3 2021Nov 12, 2021115$36.8MAvaya Hldgs CorpGDLRMR Mortgage Trvs. Q2 2021SEC
Q2 2021Aug 11, 2021109$45.5MAvaya Hldgs CorpGDLRMR Mortgage Trvs. Q1 2021SEC
Q1 2021May 12, 202164$40.2MAvaya Hldgs CorpJROFE–SEC