# The Osterweis Fund

The Osterweis Fund is a registered fund series of Professionally Managed Portfolios (series S000004931). Net assets $133.9M as of 2026-03-31.

## Profile

- Series ID: S000004931
- Registrant: Professionally Managed Portfolios
- LEI: 254900VR8D6LFTDODY09
- Net assets: $133.9M
- Total assets: $134.1M
- As of: 2026-03-31

## Advisers

- [Osterweis Capital Management, Inc. (Advisor)](https://search.stillhousedata.com/firm/105421)

## Top holdings (40 reported)

_Showing 15 of 40 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [Alphabet Inc](https://search.stillhousedata.com/security/02079K107) | — | $10.0M | 747.16% |
| [Amazon.com Inc](https://search.stillhousedata.com/security/023135106) | — | $5.5M | 410.10% |
| [Microsoft Corp](https://search.stillhousedata.com/security/594918104) | — | $5.3M | 395.52% |
| [Broadcom Inc](https://search.stillhousedata.com/security/11135F101) | — | $5.1M | 379.34% |
| [Visa Inc](https://search.stillhousedata.com/security/92826C839) | — | $4.9M | 366.93% |
| [Analog Devices Inc](https://search.stillhousedata.com/security/032654105) | — | $4.9M | 364.04% |
| [JPMorgan Chase & Co](https://search.stillhousedata.com/security/46625H100) | — | $4.6M | 343.32% |
| [Applied Materials Inc](https://search.stillhousedata.com/security/038222105) | — | $4.3M | 320.09% |
| [Waste Connections Inc](https://search.stillhousedata.com/security/94106B101) | — | $4.1M | 306.80% |
| [AutoZone Inc](https://search.stillhousedata.com/security/053332102) | — | $4.1M | 303.97% |
| [NVIDIA Corp](https://search.stillhousedata.com/security/67066G104) | — | $4.1M | 303.24% |
| [Danaher Corp](https://search.stillhousedata.com/security/235851102) | — | $3.7M | 274.80% |
| [Federated Hermes US Treasury C](https://search.stillhousedata.com/security/60934N682) | — | $3.5M | 259.28% |
| [Airbus SE](https://search.stillhousedata.com/security/009279100) | — | $3.5M | 258.06% |
| [Keysight Technologies Inc](https://search.stillhousedata.com/security/49338L103) | — | $3.4M | 255.31% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $133.9M |
| 2025-12-31 | $148.4M |
| 2025-09-30 | $153.9M |
| 2025-06-30 | $151.4M |
| 2025-03-31 | $142.7M |
| 2024-12-31 | $151.0M |
| 2024-09-30 | $155.7M |
| 2024-06-30 | $151.7M |

## More

- [Registrant: Professionally Managed Portfolios](https://search.stillhousedata.com/registrant/811030)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000004931.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.