William John Sempolinski
William John Sempolinski reported 104 US-listed holdings worth $258.9 million in its 13F for the quarter ended 30 September 2026, filed 20 October 2026. Its largest: NVIDIA Corp. (21.8%), Apple Inc. (10.0%) and T Rowe Price ETF Inc. (6.6%). Against the quarter before, it opened 7 positions, added to 35, trimmed 40 and sold out of 9.
Reported holdings$258.9M+4.5% on Q2 2026
Positions104-2 on Q2 2026
The largest ten57.5%of its reported holdings
Latest 13FQ3 2026filed 20 October 2026
Added toTrimmed
The 14 largest of its 104 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q2 2026.
What the fund reported holding at each quarter's end; hover a bar for the number of positions
What its reported holdings returned
Held through each quarter, the holdings it reported returned +9.3% over the 3 quarters to 30 September 2026, against +11.8% for the S&P 500.
Its reported holdingsThe S&P 500
Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.
What it did on the quarter
Opened 7Added 35Held 22Trimmed 40Sold out 9
Its positions against its 13F for the quarter to 30 June 2026; a change under 0.1% of a position counts as held
Opened 7
- iShares U S ETF Trust NEAR$3.2 million
- Wisdomtree Trust WTV$601,118
- ExxonMobil Holdings Corp. XOM$391,088
- Twist Bioscience Corp. TWST$347,832
- 10X Genomics Inc. TXG$334,332
- Vanguard Intermediate-Term Corp. VCIT$289,747
- Advanced Micro Devices Inc. AMD$287,208
Added to 35
- Schwab Strategic Trust SCHD+98,860 shares · +914%
- iShares Trust IBB+7,135 shares · +522%
- T Rowe Price ETF Inc. TBUX+28,600 shares · +9%
- iShares Trust SGOV+13,282 shares · +16%
- Space Exploration Techn Corp. Class A Com STK SPCX+6,832 shares · +168%
- SPDR Gold Trust GLD+2,478 shares · +300%
- Grail, Inc. GRAL+6,375 shares · +89%
- T Rowe Price ETF Inc. TCAF+18,985 shares · +25%
and 27 more in the table below
Trimmed 40
- iShares Trust TLT-19,015 shares · -75%
- Ssga Funds Management Inc. TOTL-31,450 shares · -77%
- NVIDIA Corp. NVDA-4,925 shares · -2%
- iShares Trust SOXX-1,610 shares · -20%
- Quantumscape Corp. QS-190,990 shares · -95%
- Vaneck ETF Trust SMH-1,405 shares · -18%
- Microsoft Corp. MSFT-1,232 shares · -9%
- Broadcom Inc. AVGO-1,500 shares · -49%
and 32 more in the table below
Sold out of 9
- iShares Trust ITB$2.8 million last quarter
- Intel Corp. INTC$677,206 last quarter
- Enbridge Inc ENB$406,575 last quarter
- iShares Trust MTUM$301,348 last quarter
- Coreweave Inc. CRWV$253,827 last quarter
- Iron Mountain Inc. IRM$239,989 last quarter
- Carrier Global Corp. CARR$224,231 last quarter
- General Dynamics Corp. GD$212,544 last quarter
What it holds
| Company | Shares | Value | Of its book | Change in shares |
|---|---|---|---|---|
| NVIDIA Corp. NVDA | 246.9K | $56.4 million | 21.78% | -4.9K |
| Apple Inc. AAPL | 77.4K | $25.8 million | 9.96% | +874 |
| T Rowe Price ETF Inc. TBUX | 344.1K | $17.1 million | 6.59% | +28.6K |
| Capital Group Dividend Value CGDV | 205.3K | $10.0 million | 3.88% | +13.6K |
| iShares Trust SGOV | 95.1K | $9.6 million | 3.70% | +13.3K |
| Alphabet Inc. GOOGL | 22.0K | $7.6 million | 2.93% | +511 |
| Amazon.com Inc. AMZN | 25.9K | $6.5 million | 2.50% | -200 |
| Microsoft Corp. MSFT | 12.1K | $6.2 million | 2.40% | -1.2K |
| iShares Edge MSCI USA Quality F QUAL | 24.5K | $5.5 million | 2.11% | +533 |
| Vaneck ETF Trust MOAT | 41.2K | $4.4 million | 1.68% | -270 |
| iShares Trust ITA | 19.9K | $4.1 million | 1.59% | -35 |
| T Rowe Price ETF Inc. TCAF | 96.4K | $4.1 million | 1.57% | +19.0K |
| Vaneck ETF Trust SMH | 6.5K | $3.9 million | 1.52% | -1.4K |
| Meta Platforms, Inc. META | 5.4K | $3.9 million | 1.52% | -100 |
| First Trust Exchange Traded FD GRID | 20.3K | $3.6 million | 1.39% | +835 |
| iShares Trust SOXX | 6.3K | $3.6 million | 1.38% | -1.6K |
| Schwab Strategic Trust SCHD | 109.7K | $3.6 million | 1.38% | +98.9K |
| ProShares Trust NOBL | 59.5K | $3.2 million | 1.24% | -400 |
| iShares U S ETF Trust NEAR | 64.5K | $3.2 million | 1.24% | new |
| American Century ETF Trust AVEM | 33.1K | $3.1 million | 1.20% | +2.1K |
| iShares Trust IGM | 16.9K | $2.9 million | 1.10% | -1.6K |
| Jackson Financial Inc. JXN | 21.6K | $2.8 million | 1.08% | -100 |
| First Trust FIW | 26.8K | $2.8 million | 1.07% | +210 |
| iShares Trust IVLU | 58.1K | $2.5 million | 0.96% | no change |
| iShares Trust GARP | 27.8K | $2.4 million | 0.92% | +4.5K |
| Rocket Lab Corp. RKLB | 33.1K | $2.3 million | 0.89% | +7.3K |
| iShares Trust EFA | 21.4K | $2.2 million | 0.86% | +400 |
| Sherwin Williams Co. SHW | 6.8K | $2.2 million | 0.85% | -300 |
| Capital Group Core Balanced CGBL | 55.7K | $2.0 million | 0.79% | +925 |
| Berkshire Hathaway Inc. Class B BRKB | 3.8K | $1.9 million | 0.73% | +300 |
| Grail, Inc. GRAL | 13.5K | $1.9 million | 0.73% | +6.4K |
| iShares Trust IBB | 8.5K | $1.8 million | 0.69% | +7.1K |
| Realty Income Corp. O | 31.2K | $1.7 million | 0.66% | no change |
| Space Exploration Techn Corp. Class A Com STK SPCX | 10.9K | $1.6 million | 0.64% | +6.8K |
| iShares Core S&P Small-Cap ETF IJR | 11.8K | $1.6 million | 0.62% | -60 |
| Alphabet Inc. GOOG | 4.6K | $1.6 million | 0.60% | no change |
| Taiwan Semiconductor Manufacturing Company Limited TSM | 3.2K | $1.5 million | 0.57% | -125 |
| RTX Corp. RTX | 7.6K | $1.4 million | 0.54% | -200 |
| Visa Inc. V | 3.8K | $1.4 million | 0.53% | +200 |
| Caterpillar Inc. CAT | 1.6K | $1.3 million | 0.51% | -194 |
| iShares Russell 2000 ETF IWM | 4.7K | $1.3 million | 0.50% | +20 |
| SPDR Gold Trust GLD | 3.3K | $1.3 million | 0.49% | +2.5K |
| Walmart Inc. WMT | 11.2K | $1.2 million | 0.45% | +1.6K |
| iShares Core MSCI Eafe ETF IEFA | 11.7K | $1.1 million | 0.44% | +3.0K |
| National Grid plc NGG | 13.7K | $1.0 million | 0.40% | -49 |
| Independent Bank Corp. INDB | 12.9K | $1.0 million | 0.39% | -1.8K |
| Johnson & Johnson JNJ | 3.5K | $934,797 | 0.36% | +1.4K |
| International Business Machines Corp. IBM | 4.2K | $934,703 | 0.36% | -600 |
| ASML Holding N.V. ASML | 500 | $905,835 | 0.35% | -210 |
| Vanguard Specialized Funds VIG | 3.8K | $883,778 | 0.34% | no change |
| Bank of America Corp. BAC | 16.0K | $872,732 | 0.34% | +4 |
| Micron Technology Inc. MU | 795 | $846,762 | 0.33% | -35 |
| Kinder Morgan, Inc. KMI | 28.0K | $844,200 | 0.33% | -600 |
| Vanguard Short-Term Corp. BD Idx VCSH | 10.7K | $828,893 | 0.32% | +2.4K |
| Capital GRP Fixed Incm ETF T CGHM | 32.4K | $779,868 | 0.30% | +15.5K |
| Carnival Corp. Ltd. CCL | 31.4K | $770,648 | 0.30% | +514 |
| Revolution Medicines, Inc. RVMD | 3.8K | $769,725 | 0.30% | +1.9K |
| Yandex N V NBIS | 3.2K | $754,580 | 0.29% | -894 |
| VG Totl STK Vprs VTI | 2.0K | $736,879 | 0.28% | no change |
| Guardant Health Inc. GH | 3.9K | $695,604 | 0.27% | +1.1K |
| General Electric Co. GE | 2.1K | $644,003 | 0.25% | +6 |
| Wisdomtree Trust WTV | 5.9K | $601,118 | 0.23% | new |
| Applied Materials Inc. AMAT | 1.2K | $597,292 | 0.23% | no change |
| iShares Trust IMTM | 10.7K | $563,352 | 0.22% | -3.0K |
| Broadcom Inc. AVGO | 1.6K | $556,636 | 0.22% | -1.5K |
| Citizens Financial Group Inc. CFG | 8.2K | $520,792 | 0.20% | -4.3K |
| iShares Trust AGG | 5.5K | $515,999 | 0.20% | -70 |
| iShares Trust TLT | 6.5K | $502,848 | 0.19% | -19.0K |
| Eli Lilly & Co. LLY | 408 | $472,089 | 0.18% | +49 |
| Starwood Property Trust, Inc. STWD | 34.2K | $461,390 | 0.18% | -3.5K |
| Lloyds Banking Group plc LYG | 74.8K | $421,237 | 0.16% | +1.8K |
| iShares Trust PFF | 14.1K | $414,475 | 0.16% | -9.2K |
| Arm Holdings plc ARM | 1.4K | $395,965 | 0.15% | -435 |
| Seagate Technology Holdings plc STX | 425 | $391,995 | 0.15% | -250 |
| ExxonMobil Holdings Corp. XOM | 2.4K | $391,088 | 0.15% | new |
| Lam Research Corp. LRCX | 1.2K | $387,642 | 0.15% | -300 |
| Vanguard S&P 500 VOO | 528 | $369,815 | 0.14% | +25 |
| JPMorgan Chase & Co. JPM | 1.1K | $369,206 | 0.14% | no change |
| Ssga Funds Management Inc. TOTL | 9.5K | $356,463 | 0.14% | -31.4K |
| Invesco Exchange Traded FD T RSP | 1.7K | $354,466 | 0.14% | no change |
| Twist Bioscience Corp. TWST | 1.8K | $347,832 | 0.13% | new |
| 10X Genomics Inc. TXG | 3.7K | $334,332 | 0.13% | new |
| Prudential Financial Inc. PRU | 2.9K | $323,703 | 0.13% | -450 |
| Citigroup Inc. C | 2.5K | $323,700 | 0.13% | no change |
| Costco Wholesale Corp. COST | 350 | $318,619 | 0.12% | no change |
| Home Depot, Inc. HD | 1.1K | $312,939 | 0.12% | +200 |
| Vanguard BD Index FDS BSV | 4.0K | $305,600 | 0.12% | no change |
| PIMCO ETF Trust PYLD | 11.9K | $302,141 | 0.12% | -13.6K |
| Mplx LP MPLX | 5.3K | $298,552 | 0.12% | no change |
| Delta Air Lines, Inc. DAL | 3.5K | $292,110 | 0.11% | no change |
| Vanguard Intermediate-Term Corp. VCIT | 3.7K | $289,747 | 0.11% | new |
| Advanced Micro Devices Inc. AMD | 469 | $287,208 | 0.11% | new |
| Rio Tinto plc RIO | 2.9K | $273,187 | 0.11% | no change |
| Lockheed Martin Corp. LMT | 500 | $254,625 | 0.10% | -103 |
| Morgan Stanley ETF Trust EVSB | 5.0K | $252,992 | 0.10% | no change |
| UnitedHealth Group Inc. UNH | 650 | $238,602 | 0.09% | no change |
| Palo Alto Networks Inc. PANW | 600 | $238,386 | 0.09% | no change |
| Duke Energy Corp. DUK | 2.0K | $230,300 | 0.09% | no change |
| Tesla, Inc. TSLA | 620 | $219,982 | 0.08% | no change |
| Corning Inc. GLW | 1.4K | $216,802 | 0.08% | -3.1K |
| Invesco QQQ Trust QQQ | 280 | $207,136 | 0.08% | no change |
| Southern Co. SO | 2.5K | $206,230 | 0.08% | no change |
| Quantumscape Corp. QS | 11.0K | $51,095 | 0.02% | -191.0K |
| Sealsq Corp. LAES | 18.0K | $42,120 | 0.02% | -21.7K |
Every US-listed position in the fund's 13F for the quarter ended 30 September 2026, by the value it reported.