Reported book
$200K
13F equity value
Institutional filer · SEC 13F · Q3 2025
Little Harbor Advisors, LLC
The reported 13F portfolio of Little Harbor Advisors, LLC (CIK 1539639) - top holdings, how concentrated the book is, and what changed last quarter.
- $200K
- Reported book
- 8
- Positions
- #352
- of 360 filers
The verdict
Little Harbor Advisors, LLC runs a focused institutional book - $200K across 8 reported positions as of Q3 2025, a concentrated portfolio led by a few core positions.
- $200K
- reported 13F value
- 8
- disclosed positions
- 75.0%
- in SPDR S&P 500 ETF TR
- #352
- of 360 filers
Reflects long US-equity positions reported to the SEC as of Q3 2025; 13F excludes shorts, cash, non-US and most derivatives, so this is not total AUM.
How to read this page
This page reconstructs an institutional manager's reported equity portfolio from its quarterly SEC Form 13F-HR filings. Any investment manager with at least $100 million in qualifying US-listed equity assets must file a 13F with the Securities and Exchange Commission within 45 days of each quarter-end, disclosing the long positions it held on the last day of that quarter. The "reported book" shown here is the total market value of those disclosed positions, it is not the firm's total assets under management, because 13F covers only long US-listed equities and a defined set of options and convertibles. Short positions, cash, private holdings, sovereign debt, most fixed income, non-US equities, and derivatives are all excluded by rule, so a manager's true economic exposure can differ materially from what appears here. "Positions" counts the distinct securities disclosed; "% of book" shows how much weight each holding carries. Treat these figures as a quarter-lagged snapshot for understanding how a manager is positioned - not as live holdings or investment advice. Each line traces back to a specific filing on SEC EDGAR. This page is provided for informational purposes only and is not financial advice, consult a licensed financial advisor before making investment decisions.
Positions
8
Disclosed securities
Top-5 weight
91%
Of reported book
Largest position
75.0%
SPDR S&P 500 ETF T
Concentrated book
Top-5 position weight
Top-5 position weight 91.4%
The five largest positions make up about 91% of Little Harbor Advisors, LLC's reported book as of Q3 2025.
Top Reported Holdings
| # | Security | Value | % of book |
|---|---|---|---|
| 1 | SPDR S&P 500 ETF TR | $150K | 75.0% |
| 2 | INVESCO QQQ TR | $15K | 7.7% |
| 3 | SPDR SERIES TRUST | $6K | 2.9% |
| 4 | ISHARES TR | $6K | 2.9% |
| 5 | SSGA ACTIVE ETF TR | $6K | 2.9% |
| 6 | SPDR SER TR | $6K | 2.9% |
| 7 | FIRST TR EXCHANGE-TRADED FD | $6K | 2.9% |
| 8 | ISHARES TR | $6K | 2.8% |
Latest Quarter Trades · Q3 2025
New positions (8)
Reading Little Harbor Advisors, LLC's book
A few core positions drive most of this book.
- Open any holding to see who else owns it and how concentrated that stock is. Browse stocks
- Compare this manager against the largest 13F filers by book size. Top funds by AUM
- Remember 13F shows long positions only, not total AUM, shorts or non-US holdings. 13F limitations
Informational only, not investment advice. 13F is a 45-day-lagged quarterly snapshot; positions may have changed since the filing date.
Frequently Asked Questions
How big is Little Harbor Advisors, LLC's 13F portfolio?▼
Little Harbor Advisors, LLC reports $200K of long US-equity positions across 8 securities as of Q3 2025. This reflects 13F-disclosed holdings only, it is not the firm's total assets under management.
What is Little Harbor Advisors, LLC's largest position?▼
Little Harbor Advisors, LLC's largest reported position is SPDR S&P 500 ETF TR at $150K, about 75.0% of its reported book as of Q3 2025.
What did Little Harbor Advisors, LLC trade last quarter?▼
In its Q3 2025 filing, Little Harbor Advisors, LLC opened 8 new positions. Each change is drawn from a line in the firm's 13F-HR filing and can be verified on SEC EDGAR.
Where does Little Harbor Advisors, LLC's holdings data come from?▼
Every figure renders live from Little Harbor Advisors, LLC's SEC Form 13F-HR filings in EDGAR, a mandatory quarterly disclosure of long US-listed equity positions, filed within 45 days of quarter-end.
Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q3 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Reported value is not total AUM.