13F Insight
DOSSIER · 13F-HR · Q1 2026

Endurance Services Ltd

$594M in tracked AUM across 8 positions as of Q1 2026.

ES
CIK 0002011025 · last filed Mar 31, 2026
Total AUM
$594M
as of Q1 2026
Holdings
8
—
positions
Whale Score
75
75
strong
Activity
—
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of SEC 13F Filing: Endurance Services Ltd
1. Portfolio Overview

Endurance Services Ltd has undergone a substantial transformation in its investment portfolio during the quarter ending September 30, 2025. The firm executed a massive reduction in portfolio exposure, decreasing total assets under management (AUM) by 64.9%, from $574.32 million to $201.56 million. This drastic capital reduction suggests a significant liquidity event, a strategic shift toward ...

The portfolio is highly concentrated, consisting of only 9 holdings. Unlike typical institutional portfolios that diversify across hundreds of individual stocks, Endurance Services Ltd utilizes a purely ETF-based approach. The top three holdings constitute a commanding 80.75% of the total portfolio value, indicating a high-conviction strategy focused on specific market factors rather than broad stock picking.

2. Key Holdings

The portfolio is dominated by a few large-scale ETF positions, with the top three accounting for the vast majority of assets:

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
IVV
ISHARES TR
$217M333K36.6%02
HYG
ISHARES TR
$188M2.4M31.7%03
RSP
INVESCO EXCHANGE TRADED FD T
$98M511K16.5%04
QQQE
DIREXION SHS ETF TR
$34M348K5.8%05
JAAA
JANUS DETROIT STR TR
$30M593K5.0%06
BKLN
INVESCO EXCH TRADED FD TR II
$15M743K2.6%07
WCLD
WISDOMTREE TR
$10M355K1.6%08
SPYM
SPDR SERIES TRUST
$1M19K0.2%

Filing history

2026Q1Mar 31
$594M▲ 5.1%
8 positionsView →2025Q4Dec 31
$565M▲ 180.3%
6 positionsView →2025Q3Sep 30
$202M▼ 64.9%
9 positionsView →2025Q2Jun 30
$574M▲ 6.4%
14 positionsLocked2025Q1Mar 31
$540M▼ 9.6%
14 positionsLocked2024Q4Dec 31
$597M▼ 0.0%
17 positionsLocked2024Q3Sep 30
$597M▲ 26.9%
17 positionsLocked2024Q2Jun 30
$471M▲ 4.0%
9 positionsLocked2024Q1Mar 31
$452M▲ 2.8%
9 positionsLocked2023Q4Dec 31
$440M—
9 positionsLocked