WILLIAM JOHN SEMPOLINSKI
All 13F Filings
- Location
- Easton, MA
- Most recent 13F
- Q3 2026
- Holdings value ($000)
- 258,865
- Description
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- Website
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- Founded
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- Chairman
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- CEO
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- All SEC filings
- View on sec.gov
Sector allocation over time (stocks only)
Stacked by quarter. Hover to see detailed sector breakdown for any quarter.
| Quarter | Date Filed | Holdings | Value ($000) | Form Type | Name |
|---|---|---|---|---|---|
| Q3 2026 | 10/20/2026 | 104 | 258,865 | 13F-HR | WILLIAM JOHN SEMPOLINSKI |
| Q2 2026 | 8/14/2026 | 106 | 247,661 | 13F-HR | WILLIAM JOHN SEMPOLINSKI |
| Q1 2026 | 8/26/2026 | 93 | 199,150 | 13F-HR | WILLIAM JOHN SEMPOLINSKI |
| Q4 2025 | 8/26/2026 | 89 | 203,236 | 13F-HR | WILLIAM JOHN SEMPOLINSKI |
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Money flow by instrument (QoQ, ex-options)
| Type | Value ($000) | Share % | Inflow | Outflow | Net |
|---|---|---|---|---|---|
| Stocks | 187.3 K | 72.3% | 9.959 K | 0 | 9.959 K |
| ETFs | 71.29 K | 27.5% | 1.253 K | 0 | 1.253 K |
| Debt | 306 | 0.1% | 0 | 6 | -6 |
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Fund Snapshot
Q3 2026
Latest filed
10/20/2026
Total value ($000)
258,865
Holdings
104
QoQ value change ($000)
11,204
(4.5%)
Value = total reported 13F value ($000), Holdings = number of positions.
13F Value over time
Holdings count over time
Sector allocation (latest, stocks only)
Methodology:
sector allocation is stocks-only;
instrument flow table is ex-options;
options exposure is shown separately.
Details.