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Livermore
Livermore
ZHEN

Endurance Services Ltd

SEC CIK
0002011025
Latest filing
Aug 11, 2026

The latest 13F from Endurance Services Ltd covers Q2 2026 (filed Aug 11, 2026): 8 long positions worth $653.0M. The top 10 holdings make up 100.0% of the portfolio, and the largest is iShares Core S&P 500 ETF at 38.1%. Livermore has 14 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
0
Added
2
Est. +$5.68M
Reduced
0
Sold out
0

Top 5 holdings

Share of this quarter's portfolio value

  1. iShares Core S&P 500 ETF464287200
    38.1%$249.1M
  2. iShares Tr464288513
    29.5%$192.4M
  3. Invesco Exchange Traded FD T46137V357
    16.6%$108.7M
  4. Direxion Shares ETF Trust25459Y207
    6.5%$42.4M
  5. Janus Detroit STR Tr47103U845
    4.6%$29.9M

Biggest buys

New and added positions, by estimated amount bought

  1. iShares Tr464288513
    +$3.40MAdded
  2. State Street SPDR Portfolio S&P 500 ETF78464A854
    +$2.28MAdded

Largest weight increases

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

  1. State Street SPDR Portfolio S&P 500 ETF78464A854
    +0.36 pp0.2% → 0.6%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

None this quarter.

Largest weight decreases

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

None this quarter.

Metrics

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

Portfolio value
$653.0M
+$59.2M (+10.0%) vs. prior quarter
Positions
8
0 vs. prior quarter
Top 10 concentration
100.0%
Top 10 as share of value
Turnover
0.0%
Q2 2026, one quarter
Average holding period
6.8 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 $653.0M (Q2 2026)

Q4 2023: $505.2MQ1 2024: $517.4MQ2 2024: $535.2MQ3 2024: $597.0MQ4 2024: $596.9MQ1 2025: $539.6MQ2 2025: $574.3MQ3 2025: $597.1MQ4 2025: $565.0MQ1 2026: $593.8MQ2 2026: $653.0M
Q4 2023Q2 2026
13F filings of Endurance Services Ltd by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 11, 20268$653.0MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q1 2026SEC
Q1 2026May 13, 20268$593.8MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q4 2025SEC
Q4 2025Feb 11, 20266$565.0MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q3 2025SEC
Q3 2025Nov 12, 202514$597.1MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q2 2025SEC
Q2 2025Aug 14, 202514$574.3MState Street SPDR Portfolio S&P 500 ETFiShares TrGoldman Sachs ETF Trvs. Q1 2025SEC
Q1 2025May 14, 202514$539.6MState Street SPDR Portfolio S&P 500 ETFiShares TrGoldman Sachs ETF Trvs. Q4 2024SEC
Q4 2024Feb 11, 202517$596.9MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q3 2024SEC
Q3 2024Nov 14, 202417$597.0MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q2 2024SEC
Q2 2024Nov 14, 2024Amended11$535.2MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q1 2024SECSEC
Q1 2024Nov 14, 2024Amended11$517.4MiShares Core S&P 500 ETFiShares TrInvesco Exchange Traded FD Tvs. Q4 2023SECSEC
Q4 2023Nov 14, 2024Amended11$505.2MiShares TriShares Core S&P 500 ETFInvesco Exchange Traded FD T–SECSEC