Parthenon LLC reported 106 positions worth $915.39M for the quarter ended Sep 30, 2026, up 0.6% on the prior quarter. It opened 2 new positions, added to 18, trimmed 41 and exited 5. Its largest holding is Microsoft Corp at 12.7% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| BKNG Booking Holdings Inc. | +8,000 | +8.4% | $1.30M | 1.84% |
| CLBT Cellebrite DI Ltd. | +74.3K | – | $837.00K | 0.091% |
| TRV Travelers Companies, Inc. | +586 | – | $208.92K | 0.023% |
| ICLR Icon Plc | +950 | +1.2% | $161.49K | 1.48% |
| META Meta Platforms, Inc. | +140 | +0.2% | $101.53K | 5.36% |
| NVDA Nvidia Corp | +425 | +10.6% | $97.06K | 0.11% |
| SYK Stryker Corp | +165 | +0.4% | $45.44K | 1.13% |
| PAYX Paychex Inc | +325 | +0.1% | $32.01K | 2.67% |
| ABBV AbbVie Inc. | +120 | +0.8% | $31.39K | 0.41% |
| IBM International Business Machines Corp | +121 | +2.0% | $26.61K | 0.148% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| THRY Thryv Holdings, Inc. | -184.7K | -100.0% | $727.79K | Exited |
| XOM ExxonMobil Holdings Corp | -4,250 | -2.5% | $691.69K | 2.98% |
| MDT Medtronic plc | -7,786 | -13.0% | $671.85K | 0.49% |
| GOOGL Alphabet Inc. | -1,572 | -1.0% | $540.89K | 5.64% |
| FAST Fastenal Co | -10.1K | -1.9% | $501.49K | 2.8% |
| AAPL Apple Inc. | -1,425 | -1.1% | $474.55K | 4.57% |
| MDLZ Mondelez International, Inc. | -7,575 | -5.6% | $437.99K | 0.805% |
| PG PROCTER & GAMBLE Co | -1,682 | -1.3% | $244.36K | 1.98% |
| RELL Richardson Electronics, Ltd. | -12.6K | -12.8% | $222.83K | 0.166% |
| SO Southern Co | -2,307 | -100.0% | $220.80K | Exited |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | MSFT Microsoft Corp | Technology | 227.2K | $116.52M | 12.73% | -102 | 0.0% | Reduced | 0% |
| 2 | BRK-B Berkshire Hathaway Inc | Financial Services | 136.6K | $68.04M | 7.43% | -144 | -0.1% | Reduced | 0.01% |
| 3 | GOOGL Alphabet Inc. | Technology | 149.9K | $51.58M | 5.64% | -1,572 | -1.0% | Reduced | 0% |
| 4 | META Meta Platforms, Inc. | Technology | 67.7K | $49.08M | 5.36% | +140 | +0.2% | Added | 0% |
| 5 | AAPL Apple Inc. | Technology | 125.6K | $41.83M | 4.57% | -1,425 | -1.1% | Reduced | 0% |
| 6 | GOOG Alphabet Inc. | Technology | 109.0K | $37.14M | 4.06% | -470 | -0.4% | Reduced | 0% |
| 7 | GLW Corning Inc | Basic Materials | 228.5K | $35.14M | 3.84% | -332 | -0.1% | Reduced | 0.03% |
| 8 | JNJ Johnson & Johnson | Healthcare | 119.8K | $31.72M | 3.47% | -259 | -0.2% | Reduced | 0% |
| 9 | XOM ExxonMobil Holdings Corp | Energy | 167.4K | $27.24M | 2.98% | -4,250 | -2.5% | Reduced | 0% |
| 10 | FAST Fastenal Co | Industrials | 517.1K | $25.61M | 2.8% | -10.1K | -1.9% | Reduced | 0.05% |
| 11 | PAYX Paychex Inc | Technology | 248.3K | $24.46M | 2.67% | +325 | +0.1% | Added | 0.07% |
| 12 | WMT Walmart Inc. | Consumer Staples | 224.9K | $23.38M | 2.55% | -469 | -0.2% | Reduced | 0% |
| 13 | MRK Merck & Co., Inc. | Healthcare | 148.5K | $21.58M | 2.36% | -1,125 | -0.8% | Reduced | 0.01% |
| 14 | CSCO Cisco Systems, Inc. | Technology | 195.2K | $21.01M | 2.29% | -268 | -0.1% | Reduced | 0% |
| 15 | AXP American Express Co | Financial Services | 66.3K | $20.16M | 2.2% | -125 | -0.2% | Reduced | 0.01% |
Tip. Select a row to see that position’s full history at Parthenon.
As of its Q3 2026 13F filing, Parthenon LLC’s five largest positions were Microsoft Corp (MSFT) at 12.7%, Berkshire Hathaway Inc (BRK-B) at 7.4%, Alphabet Inc. (GOOGL) at 5.6%, Meta Platforms, Inc. (META) at 5.4%, Apple Inc. (AAPL) at 4.6% of the reported portfolio.
Parthenon LLC reported a 13F portfolio worth $915.39M across 106 positions for Q3 2026. That is up 0.6% from the previous quarter.
Its largest purchases by value were Booking Holdings Inc. ($1.30M), Cellebrite DI Ltd. ($837.00K), Travelers Companies, Inc. ($208.92K). It opened 2 new positions.
Its largest sales by value were Thryv Holdings, Inc. ($727.79K), ExxonMobil Holdings Corp ($691.69K), Medtronic plc ($671.85K). It exited 5 positions entirely.
From the Form 13F-HR reports Parthenon LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.