WILLIAM JOHN SEMPOLINSKI — 13F Holdings & Portfolio
CIK 2149024 · latest 13F-HR filed 2026-08-26
WILLIAM JOHN SEMPOLINSKI manages $199.2M in 13F-reported U.S. long-equity assets across 93 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are NVDA (22.29%), AAPL (9.79%), TBUX (6.39%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 10 new positions, exited 6, added to 37, and trimmed 20.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
SUITE 207
EASTON, MA 02375
$199.2M
Long-equity book
93
Distinct positions
2026-03-31
Filed 2026-08-26
+10 / −6 / ↑37 / ↓20
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- ISHARES TR$1.3M +120.8%
- T ROWE PRICE EXCHANGE-TRADED$1.3M +11.3%
- FIRST TR EXCHANGE-TRADED FD$1.1M +63.5%
- CAPITAL GROUP DIVIDEND VALUE$909.1K +21.3%
- ISHARES TR$833.9K +55.5%
Top Trims
- NVIDIA CORPORATION-$2.9M -6.2%
- MICROSOFT CORP-$2.3M -26.4%
- INTERNATIONAL BUSINESS MACHS-$954.6K -33.5%
- QUANTUMSCAPE CORP-$711.9K -36.6%
- AMAZON COM INC-$598.9K -9.9%
New Positions
- AMERICAN CENTY ETF TR$1.8M
- SSGA ACTIVE ETF TR$1.5M
- ISHARES TR$853.9K
- CORNING INC$613.2K
- LOCKHEED MARTIN CORP$364.4K
Exited Positions
- ISHARES TR$4.1M
- FIRST TR EXCHANGE-TRADED FD$3.0M
- BLACKSTONE INC$2.0M
- GRAIL INC$1.5M
- VANGUARD CHARLOTTE FDS$225.0K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 67066G104 | $44.4M | 22.29% | 254,540 | SH |
| 2 | APPLE INC | AAPL | 037833100 | $19.5M | 9.79% | 76,784 | SH |
| 3 | T ROWE PRICE EXCHANGE-TRADED | TBUX | 87283Q701 | $12.7M | 6.39% | 255,877 | SH |
| 4 | ISHARES TR | SGOV | 46436E718 | $8.2M | 4.12% | 81,515 | SH |
| 5 | MICROSOFT CORP | MSFT | 594918104 | $6.3M | 3.16% | 16,990 | SH |
| 6 | ALPHABET INC | GOOGL | 02079K305 | $6.2M | 3.09% | 21,412 | SH |
| 7 | AMAZON COM INC | AMZN | 023135106 | $5.4M | 2.73% | 26,149 | SH |
| 8 | CAPITAL GROUP DIVIDEND VALUE | CGDV | 14020W106 | $5.2M | 2.60% | 121,570 | SH |
| 9 | ISHARES TR | ITA | 464288760 | $4.6M | 2.31% | 21,058 | SH |
| 10 | VANECK ETF TRUST | MOAT | 92189F643 | $4.1M | 2.06% | 42,464 | SH |
| 11 | ISHARES TR | QUAL | 46432F339 | $3.7M | 1.88% | 19,468 | SH |
| 12 | META PLATFORMS INC | META | 30303M102 | $3.3M | 1.67% | 5,815 | SH |
| 13 | PROSHARES TR | NOBL | 74348A467 | $3.2M | 1.61% | 30,242 | SH |
| 14 | FIRST TR EXCHANGE-TRADED FD | GRID | 33737A108 | $2.7M | 1.37% | 16,640 | SH |
| 15 | ISHARES TR | TLT | 464287432 | $2.6M | 1.28% | 29,460 | SH |
| 16 | FIRST TR EXCHANGE-TRADED FD | FIW | 33733B100 | $2.5M | 1.26% | 24,379 | SH |
| 17 | ISHARES TR | IVLU | 46435G409 | $2.4M | 1.19% | 59,927 | SH |
| 18 | ISHARES TR | SOXX | 464287523 | $2.3M | 1.17% | 7,106 | SH |
| 19 | SHERWIN WILLIAMS CO | SHW | 824348106 | $2.3M | 1.15% | 7,166 | SH |
| 20 | ISHARES TR | ITB | 464288752 | $2.3M | 1.14% | 25,072 | SH |
| 21 | JACKSON FINANCIAL INC | JXN | 46817M107 | $2.2M | 1.13% | 21,200 | SH |
| 22 | ISHARES TR | EFA | 464287465 | $2.1M | 1.03% | 21,215 | SH |
| 23 | INTERNATIONAL BUSINESS MACHS | IBM | 459200101 | $1.9M | 0.95% | 7,830 | SH |
| 24 | T ROWE PRICE EXCHANGE-TRADED | TCAF | 87283Q867 | $1.9M | 0.95% | 53,067 | SH |
| 25 | REALTY INCOME CORP | O | 756109104 | $1.9M | 0.94% | 30,750 | SH |
| 26 | AMERICAN CENTY ETF TR | AVEM | 025072604 | $1.8M | 0.89% | 21,983 | SH |
| 27 | ROCKET LAB CORP | RKLB | 773121108 | $1.7M | 0.86% | 26,550 | SH |
| 28 | CAPITAL GROUP CORE BALANCED | CGBL | 14021D107 | $1.5M | 0.76% | 44,230 | SH |
| 29 | SSGA ACTIVE ETF TR | TOTL | 78467V848 | $1.5M | 0.76% | 37,995 | SH |
| 30 | RTX CORPORATION | RTX | 75513E101 | $1.4M | 0.71% | 7,352 | SH |
| 31 | ISHARES TR | IJR | 464287804 | $1.4M | 0.70% | 11,233 | SH |
| 32 | ALPHABET INC | GOOG | 02079K107 | $1.3M | 0.66% | 4,584 | SH |
| 33 | CATERPILLAR INC | CAT | 149123101 | $1.3M | 0.65% | 1,830 | SH |
| 34 | QUANTUMSCAPE CORP | QS | 74767V109 | $1.2M | 0.62% | 193,100 | SH |
| 35 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $1.2M | 0.60% | 2,500 | SH |
| 36 | INDEPENDENT BK CORP MASS | INDB | 453836108 | $1.2M | 0.60% | 15,889 | SH |
| 37 | ISHARES TR | IWM | 464287655 | $1.2M | 0.60% | 4,818 | SH |
| 38 | WALMART INC | WMT | 931142103 | $1.2M | 0.60% | 9,591 | SH |
| 39 | ISHARES TR | PFF | 464288687 | $1.2M | 0.59% | 38,824 | SH |
| 40 | TAIWAN SEMICONDUCTOR MANUFAC | TSM | 874039100 | $1.1M | 0.57% | 3,360 | SH |
| 41 | NATIONAL GRID PLC | NGG | 636274409 | $1.1M | 0.56% | 13,210 | SH |
| 42 | VISA INC | V | 92826C839 | $1.1M | 0.55% | 3,600 | SH |
| 43 | KINDER MORGAN INC DEL | KMI | 49456B101 | $976.2K | 0.49% | 29,115 | SH |
| 44 | PIMCO ETF TR | PYLD | 72201R585 | $958.9K | 0.48% | 36,600 | SH |
| 45 | ASML HLDG NV | ASML | N07059210 | $937.8K | 0.47% | 710 | SH |
| 46 | BROADCOM INC | AVGO | 11135F101 | $923.9K | 0.46% | 2,985 | SH |
| 47 | ISHARES TR | IGM | 464287549 | $853.9K | 0.43% | 7,205 | SH |
| 48 | CARNIVAL CORP | CCL | 143658300 | $851.2K | 0.43% | 32,890 | SH |
| 49 | BANK OF AMER CORP | BAC | 060505104 | $781.3K | 0.39% | 16,026 | SH |
| 50 | VANGUARD SPECIALIZED FUNDS | VIG | 921908844 | $756.6K | 0.38% | 3,518 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $247.7M | 106 | 0001951757-26-001260 |
| 2026-03-31 | 2026-08-26 | $199.2M | 93 | 0001951757-26-001607 |
| 2025-12-31 | 2026-08-26 | $203.2M | 89 | 0001951757-26-001606 |