Washington State Investment Board holds a concentrated book of 2 stocks worth $267.8M as of Q2 2026 (disclosed Aug 3, 2026, a ~34-day 13F lag). Their largest long position is Ftai Aviation Ltd at 80% of the equity book. Cloning the disclosed picks since 2025 would be +16% (+22.7%/yr). That is a simulation of the disclosed long book, not audited returns.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/943712/holdings"
Use Arkolith to show WASHINGTON STATE INVESTMENT BOARD's latest holdings, largest changes, and filing provenance.
Following at the filing date actually beat the quarter-end book by 10.1 points over this window.
Growth of $10,000 cloning Washington State Investment Board's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~34 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.
Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% mapped to company sectors
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.
Other tracked managers holding the same core names as Washington State Investment Board
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 2 / 2 | $2.0B |
| FMR LLC | 2 / 2 | $1.3B |
| VANGUARD CAPITAL MANAGEMENT LLC | 2 / 2 | $1.1B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2 / 2 | $1.0B |
| STATE STREET CORP | 2 / 2 | $750.4M |
| GEODE CAPITAL MANAGEMENT, LLC | 2 / 2 | $562.7M |
| GOLDMAN SACHS GROUP INC | 2 / 2 | $329.9M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 2 / 2 | $297.6M |
Ranked by how many of Washington State Investment Board's top 2 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Ftai Aviation Ltd SHS | $213.1M | 787.8K | 79.6% | —Held | |
| 2 | Ftai Infrastructure Inc COMMON STOCK | $54.7M | 11.79M | 20.4% | —Held |
As-of date vs the date the SEC received each filing
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; 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.