Arch Capital Group Ltd
- SEC CIK
- 0000947484
- Latest filing
- Aug 4, 2026
The latest 13F from Arch Capital Group Ltd covers Q2 2026 (filed Aug 4, 2026): 4 long positions worth $291.0M. The top 10 holdings make up 100.0% of the portfolio, and the largest is Janus Detroit STR Tr at 68.4%. 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.
- New
- 0
- Added
- 0
- Reduced
- 0
- Sold out
- 0
Top 5 holdings
Share of this quarter's portfolio value
- Janus Detroit STR Tr47103U84568.4%$199.0M
- iShares Tr46434V40722.3%$64.9M
- iShares Tr4642886468.5%$24.6M
- iShares Tr4642885130.8%$2.40M
Biggest buys
New and added positions, by estimated amount bought
None this quarter.
Largest weight increases
New and added positions, by percentage points of the portfolio gained
None this quarter.
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
- $291.0M
- +$567.0K (+0.2%) vs. prior quarter
- Positions
- 4
- 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
- 12.3 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 $780.4M (Q3 2021)
| Quarter | Filed | Positions | Value | Top 3 holdings | Changes | Filing |
|---|---|---|---|---|---|---|
| Q2 2026 | Aug 4, 2026 | 4 | $291.0M | Janus Detroit STR TriShares TriShares Tr | vs. Q1 2026 | SEC |
| Q1 2026 | May 5, 2026 | 4 | $290.4M | Janus Detroit STR TriShares TriShares Tr | vs. Q4 2025 | SEC |
| Q4 2025 | Feb 9, 2026 | 4 | $292.3M | Janus Detroit STR TriShares TriShares Tr | vs. Q3 2025 | SEC |
| Q3 2025 | Nov 6, 2025 | 4 | $293.8M | Janus Detroit STR TriShares TriShares Tr | vs. Q2 2025 | SEC |
| Q2 2025 | Aug 5, 2025 | 4 | $293.3M | Janus Detroit STR TriShares TriShares Tr | vs. Q1 2025 | SEC |
| Q1 2025 | May 7, 2025 | 4 | $358.6M | Janus Detroit STR TriShares TriShares Tr | vs. Q4 2024 | SEC |
| Q4 2024 | Feb 10, 2025 | 3 | $428.0M | Janus Detroit STR TriShares TriShares Tr | vs. Q3 2024 | SEC |
| Q3 2024 | Nov 7, 2024 | 3 | $386.8M | Janus Detroit STR TriShares TriShares Tr | vs. Q2 2024 | SEC |
| Q2 2024 | Aug 6, 2024 | 3 | $228.3M | Janus Detroit STR TriShares TriShares Tr | vs. Q1 2024 | SEC |
| Q1 2024 | May 9, 2024 | 4 | $587.2M | iShares TrJanus Detroit STR TrSPDR Series Trust | vs. Q4 2023 | SEC |
| Q4 2023 | Feb 14, 2024 | 3 | $285.4M | iShares TrJanus Detroit STR TriShares Tr | vs. Q3 2023 | SEC |
| Q3 2023 | Nov 9, 2023 | 3 | $277.5M | iShares TrJanus Detroit STR TriShares Tr | vs. Q2 2023 | SEC |
| Q2 2023 | Aug 2, 2023 | 3 | $279.3M | iShares TrJanus Detroit STR TriShares Tr | vs. Q1 2023 | SEC |
| Q1 2023 | May 4, 2023 | 2 | $276.3M | iShares TriShares Tr | vs. Q4 2022 | SEC |
| Q4 2022 | Feb 24, 2023 | 2 | $272.4M | iShares TriShares Tr | vs. Q3 2022 | SEC |
| Q3 2022 | Nov 3, 2022 | 2 | $269.3M | iShares TriShares Tr | vs. Q2 2022 | SEC |
| Q2 2022 | Aug 3, 2022 | 2 | $276.4M | iShares TriShares Tr | vs. Q1 2022 | SEC |
| Q1 2022 | May 4, 2022 | 4 | $538.4M | iShares TrInvesco Exch Traded FD Tr IISsga Active ETF Tr | vs. Q4 2021 | SEC |
| Q4 2021 | Feb 25, 2022 | 11 | $723.5M | Invesco Exch Traded FD Tr IIiShares TrSsga Active ETF Tr | vs. Q3 2021 | SEC |
| Q3 2021 | Nov 4, 2021 | 21 | $780.4M | Kraneshares TrustiShares TrInvesco Exch Traded FD Tr II | vs. Q2 2021 | SEC |
| Q2 2021 | Aug 5, 2021 | 20 | $596.5M | iShares TrState Street Financial Select Sector SPDR ETFSsga Active ETF Tr | vs. Q1 2021 | SEC |
| Q1 2021 | May 6, 2021 | 19 | $567.9M | iShares TrState Street Financial Select Sector SPDR ETFState Street Utilities Select Sector SPDR ETF | – | SEC |
13D and 13G filings
Companies where Arch Capital Group Ltd reports owning 5% or more on Schedule 13D or 13G, and its latest filings.
Current stakes of 5% or more
Arch Capital Group Ltd does not currently report owning 5% or more of any company.
Latest filings
4 filings on file made by Arch Capital Group Ltd or listing it as a reporting person, newest first.
| Company | Filed (ET) | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| CSQCalamos Strategic Total Return Fund | Oct 29, 20213:20 PM ET | 13GOld format | – | New | – | SEC |
| Watford Holdings Ltd. | Jul 7, 2021 | 13D/AOld format | – | – | – | SEC |
| Watford Holdings Ltd. | Feb 19, 2021 | 13DOld format | – | – | – | SEC |
| Watford Holdings Ltd. | Feb 16, 2021 | 13G/AOld format | – | – | – | SEC |