BPIRX Institutional Ownership & Shareholders
BOSTON PART L/S RESEARCH-INS (BPIRX) is currently held by 5 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $13.30M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Broderick Brian C is currently the largest disclosed institutional shareholder of BPIRX tracked by InsiderSet, reporting ownership valued at approximately $8.86M in its June 30, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed BPIRX value among the investors covered in this analysis. Major shareholders include Broderick Brian C, Hemenway Trust Co Llc, Somerville Kurt F, and several other long-term asset managers with concentrated positions in BOSTON PART L/S RESEARCH-INS (BPIRX).
This page ranks the largest institutional BPIRX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
5
Total Reported Value
$13.30M
Largest Holder
Broderick Brian C
Largest Position
$8.86M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
5
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Broderick Brian C | 1.37% | 593,224 | $8,856,831 | — | — | — | |
| Hemenway Trust Co Llc | 0.27% | 256,697 | $3,832,491 | — | — | — | |
| Somerville Kurt F | 0.10% | 26,891 | $401,493 | — | — | — | |
| Dempze Nancy E | 0.09% | 12,962 | $193,520 | — | — | — | |
| Financial Gravity Asset Management, Inc. | 0.00% | 1,145 | $15,957 | — | — | — |
Frequently asked questions about BPIRX
Who are the largest institutional holders of BPIRX?
The largest institutional holders of BPIRX reported in the latest SEC Form 13F filings include Broderick Brian C, Hemenway Trust Co Llc, Somerville Kurt F, Dempze Nancy E, and Financial Gravity Asset Management, Inc.. InsiderSet ranks institutional holders by their latest reported BPIRX position.
What is BPIRX institutional ownership?
This page tracks BPIRX positions reported by institutional investment managers through SEC Form 13F. BOSTON PART L/S RESEARCH-INS (BPIRX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own BPIRX?
InsiderSet currently tracks 5 institutional managers reporting BPIRX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of BPIRX shareholders.
How much BPIRX stock do institutions own?
Institutional investment managers disclosed approximately $13.30M in BPIRX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was BPIRX institutional ownership last updated?
The latest BPIRX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional BPIRX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its BPIRX position after the reporting date.
Are institutions buying or selling BPIRX?
Institutional buying and selling can be analyzed by comparing BPIRX positions across consecutive 13F reporting periods. InsiderSet's BPIRX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View BPIRX ownership changes.
How has BPIRX institutional ownership changed over time?
InsiderSet tracks BPIRX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.