William John Sempolinski holds a focused book of 93 stocks worth $199.2M as of Q3 2026 (disclosed Aug 26, 2026, a ~0-day 13F lag). Their largest long position is Nvidia Corp at 22% of the equity book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
61% 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 William John Sempolinski
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| MORGAN STANLEY | 80 / 80 | $534.3B |
| WELLS FARGO & COMPANY/MN | 80 / 80 | $151.4B |
| UBS Group AG | 80 / 80 | $141.0B |
| RAYMOND JAMES FINANCIAL INC | 80 / 80 | $107.0B |
| LPL Financial LLC | 80 / 80 | $76.2B |
| ENVESTNET ASSET MANAGEMENT INC | 80 / 80 | $70.7B |
| STIFEL FINANCIAL CORP | 80 / 80 | $31.5B |
| HighTower Advisors, LLC | 80 / 80 | $26.0B |
Ranked by how many of William John Sempolinski's top 80 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 | Nvidia Corporation COM | $44.4M | 254.5K | 22.3% | ▲New New position | |
| 2 | Apple Inc COM | $19.5M | 76.8K | 9.8% | ▲New New position | |
| 3 | T Rowe Price Exchange-Traded ULTRA SHRT TRM | $12.7M | 255.9K | 6.4% | ▲New New position | |
| 4 | Ishares TR 0-3 MTH TREASURY | $8.2M | 81.5K | 4.1% | ▲New New position | |
| 5 | Microsoft Corp COM | $6.3M | 17.0K | 3.2% | ▲New New position | |
| 6 | Alphabet Inc CAP STK CL A | $6.2M | 21.4K | 3.1% | ▲New New position | |
| 7 | Amazon Com Inc COM | $5.4M | 26.1K | 2.7% | ▲New New position | |
| 8 | Capital Group Dividend Value SHS CREAT UNIT | $5.2M | 121.6K | 2.6% | ▲New New position | |
| 9 | Ishares TR US AER DEF ETF | $4.6M | 21.1K | 2.3% | ▲New New position | |
| 10 | Vaneck ETF Trust MRNGSTR WDE MOAT | $4.1M | 42.5K | 2.1% | ▲New New position | |
| 11 | Ishares TR MSCI USA QLT FCT | $3.7M | 19.5K | 1.9% | ▲New New position | |
| 12 | Meta Platforms Inc CL A | $3.3M | 5.8K | 1.7% | ▲New New position | |
| 13 | Proshares TR S&P 500 DV ARIST | $3.2M | 30.2K | 1.6% | ▲New New position | |
| 14 | First TR Exchange-Traded FD NASDQ CLN EDGE | $2.7M | 16.6K | 1.4% | ▲New New position | |
| 15 | Ishares TR 20 YR TR BD ETF | $2.6M | 29.5K | 1.3% | ▲New New position | |
| 16 | First TR Exchange-Traded FD WTR ETF | $2.5M | 24.4K | 1.3% | ▲New New position | |
| 17 | Ishares TR MSCI INTL VLU FT | $2.4M | 59.9K | 1.2% | ▲New New position | |
| 18 | Ishares TR ISHARES SEMICDTR | $2.3M | 7.1K | 1.2% | ▲New New position | |
| 19 | Sherwin Williams Co COM | $2.3M | 7.2K | 1.2% | ▲New New position | |
| 20 | Ishares TR US HOME CONS ETF | $2.3M | 25.1K | 1.1% | ▲New New position | |
| 21 | Jackson Financial Inc COM CL A | $2.2M | 21.2K | 1.1% | ▲New New position | |
| 22 | Ishares TR MSCI EAFE ETF | $2.1M | 21.2K | 1.0% | ▲New New position | |
| 23 | International Business Machs COM | $1.9M | 7.8K | 1.0% | ▲New New position | |
| 24 | T Rowe Price Exchange-Traded CAP APPRECIATION | $1.9M | 53.1K | 0.9% | ▲New New position | |
| 25 | Realty Income Corp COM | $1.9M | 30.8K | 0.9% | ▲New New position | |
| 26 | American Centy ETF TR AVANTIS EMGMKT | $1.8M | 22.0K | 0.9% | ▲New New position | |
| 27 | Rocket Lab Corp COM | $1.7M | 26.6K | 0.9% | ▲New New position | |
| 28 | Capital Group Core Balanced SHS | $1.5M | 44.2K | 0.8% | ▲New New position | |
| 29 | Ssga Active ETF TR ST STR TOTAL ETF | $1.5M | 38.0K | 0.8% | ▲New New position | |
| 30 | RTX Corporation COM | $1.4M | 7.4K | 0.7% | ▲New New position | |
| 31 | Ishares TR CORE S&P SCP ETF | $1.4M | 11.2K | 0.7% | ▲New New position | |
| 32 | Alphabet Inc CAP STK CL C | $1.3M | 4.6K | 0.7% | ▲New New position | |
| 33 | Caterpillar Inc COM | $1.3M | 1.8K | 0.7% | ▲New New position | |
| 34 | Quantumscape Corp COM CL A | $1.2M | 193.1K | 0.6% | ▲New New position | |
| 35 | Berkshire Hathaway Inc Del CL B NEW | $1.2M | 2.5K | 0.6% | ▲New New position | |
| 36 | Independent BK Corp Mass COM | $1.2M | 15.9K | 0.6% | ▲New New position | |
| 37 | Ishares TR RUSSELL 2000 ETF | $1.2M | 4.8K | 0.6% | ▲New New position | |
| 38 | Walmart Inc COM | $1.2M | 9.6K | 0.6% | ▲New New position | |
| 39 | Ishares TR PFD AND INCM SEC | $1.2M | 38.8K | 0.6% | ▲New New position | |
| 40 | Taiwan Semiconductor Manufac SPONSORED ADS | $1.1M | 3.4K | 0.6% | ▲New New position | |
| 41 | National Grid PLC SPONSORED ADR NE | $1.1M | 13.2K | 0.6% | ▲New New position | |
| 42 | Visa Inc COM CL A | $1.1M | 3.6K | 0.5% | ▲New New position | |
| 43 | Kinder Morgan Inc Del COM | $976K | 29.1K | 0.5% | ▲New New position | |
| 44 | Pimco ETF TR MULTISECTOR BD | $959K | 36.6K | 0.5% | ▲New New position | |
| 45 | ASML Hldg NV N Y REGISTRY SHS | $938K | 710 | 0.5% | ▲New New position | |
| 46 | Broadcom Inc COM | $924K | 3.0K | 0.5% | ▲New New position | |
| 47 | Ishares TR EXPND TEC SC ETF | $854K | 7.2K | 0.4% | ▲New New position | |
| 48 | Carnival Corp COMMON STOCK | $851K | 32.9K | 0.4% | ▲New New position | |
| 49 | Bank Of Amer Corp COM | $781K | 16.0K | 0.4% | ▲New New position | |
| 50 | Vanguard Specialized Funds DIV APP ETF | $757K | 3.5K | 0.4% | ▲New New position |
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/2149024/holdings"
Use Arkolith to show WILLIAM JOHN SEMPOLINSKI's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q3 2026 | Aug 26, 2026 | Aug 26, 2026 | 93 | $199.2M | 13F-HR |
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. Price-derived performance is withheld until the price-source policy and freshness gate are green.