Arkolith/Funds/Japan Post Holdings Co., Ltd.

Japan Post Holdings Co., Ltd.

CIK 1783464Holding company
Holdings as of Jun 30, 2026·disclosed Jul 10, 2026·~10-day 13F lag·13F-HR
Active Filer

Japan Post Holdings Co., Ltd. holds a concentrated book of 1 reported position worth $6.0B as of Q2 2026 (disclosed Jul 10, 2026, a ~10-day 13F lag). The SEC 13F shows only Japan Post Holdings Co., Ltd.'s US-listed positions. Its main portfolio is mostly Tokyo-listed and does not appear in this book. This quarter they trimmed Aflac Inc. Their largest long position is Aflac Inc at 100% of the reported non-option book. Cloning the disclosed picks since 2020 would be +131% (+13.3%/yr). That is a simulation of the disclosed long book, not audited returns.

Opened
0
bought for the first time
no new positions
Added to
0
already held, bought more
no adds
Trimmed
1
sold some, still holds it
Sold out
0
exited the position entirely
nothing exited

Growth of $10,000: cloning the disclosed book

If you'd copied them
+130.6%
+13.3%/yr · since Jan '20
Their reported book
+166.6%
held from quarter-end
S&P 500
+158.3%
same window
$5K$10K$16K$21K$26KJan '20May '21Sep '22Jan '24May '25Sep '26
Japan Post Holdings Co., Ltd. (copied at disclosure) S&P 500

The reported book (valued from quarter-end) returned +166.6%, a 36.0-point gap that is the cost of the ~10-day 13F disclosure lag a real follower can't avoid.

Growth of $10,000 cloning Japan Post Holdings Co., Ltd.'s disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~10 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.

How much sits in the biggest positions

Top-heavy: concentrated book

Top 5 holdings
100%
Top 10 holdings
100%
Top 20 holdings
100%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Where the money is, by sector

100% mapped to company sectors

Financials
100%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis

Bought

No buys this quarter.

Trimmed / exited

Holdings: largest first

Bars show each position's share of the portfolio. Click a row for its position history.

1 positions
#SecurityValueShares% PortLast moveHistory
1Aflac Inc.
Common stock
$6.0B50.90M
100.0%
▼−2.1%
Reduced · −1.1M sh
Showing all 1 positions
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Filing history

As-of date vs the date the SEC received each filing

$6.0B · Q2 2026Q3 2020 · $1.9BQ2 2026 · $6.0B

Reported 13F total per quarter. Raw filing totals can include option notional.

QuarterAs ofFiledLagPositionsValueForm
Q2 2026Jun 30, 2026Jul 10, 202610d1$6.0B13F-HR
Q1 2026Mar 31, 2026May 8, 202638d1$5.7B13F-HR
Q4 2025Dec 31, 2025Jan 27, 202627d1$5.8B13F-HR
Q3 2025Sep 30, 2025Oct 27, 202527d1$5.8B13F-HR
Q2 2025Jun 30, 2025Jul 25, 202525d1$5.5B13F-HR
Q1 2025Mar 31, 2025Apr 8, 20258d1$5.8B13F-HR
Q4 2024Dec 31, 2024Jan 16, 202516d1$5.4B13F-HR
Q3 2024Sep 30, 2024Oct 10, 202410d1$5.8B13F-HR
Q2 2024Jun 30, 2024Jul 11, 202411d1$4.7B13F-HR
Q1 2024Mar 31, 2024Apr 16, 202416d1$4.5B13F-HR
Q4 2023Dec 31, 2023Jan 5, 20245d1$4.3B13F-HR
Q3 2023Sep 30, 2023Oct 16, 202316d1$4.0B13F-HR
Q2 2023Jun 30, 2023Jul 27, 202327d1$3.7B13F-HR
Q1 2023Mar 31, 2023Apr 10, 202310d1$3.4B13F-HR
Q4 2022Dec 31, 2022Jan 31, 202331d1$3.8B13F-HR
Q3 2022Sep 30, 2022Nov 2, 202233d1$2.9B13F-HR
Q2 2022Jun 30, 2022Aug 4, 202235d1$2.9B13F-HR
Q1 2022Mar 31, 2022Apr 27, 202227d1$3.4B13F-HR
Q4 2021Dec 31, 2021Jan 24, 202224d1$3.1B13F-HR
Q3 2021Sep 30, 2021Oct 7, 20217d1$2.7B13F-HR
Q2 2021Jun 30, 2021Jul 6, 20216d1$2.8B13F-HR
Q1 2021Mar 31, 2021Apr 7, 20217d1$2.7B13F-HR
Q4 2020Dec 31, 2020Jan 6, 20216d1$2.3B13F-HR
Q3 2020Sep 30, 2020Oct 5, 20205d1$1.9B13F-HR

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.