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Little Harbor Advisors, LLC

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13F filer, CIK 1539639, MARBLEHEAD, MA

Little Harbor Advisors, LLC reported $200,142,000 across 8 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-25.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001539639-25-000009

Period
2025-09-30
Reported value
$200M
Holdings
8
Top 10 weight
100%
New
1
Sold out
0

Largest buys vs the previous quarter

SecurityShares changeApprox. value
SPYadded+24,620$16.4M
HYGnew+69,250$5.66M
QQQadded+831$499K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
FTSLreduced-26,569-$1.22M
SPHYreduced-7,964-$191K
USHYreduced-5,022-$190K
SRLNreduced-4,527-$188K
SJNKreduced-7,335-$188K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2025

Share positions as resolved from 13F-HR 0001539639-25-000009, largest first. % of portfolio is the value over $200,142,000, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
SPYSTATE STR SPDR S&P 500 ETF TQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 205,493 shares; 2024Q4: 208,061 shares; 2025Q1: 206,852 shares; 2025Q2: 200,669 shares; 2025Q3: 225,289 shares 225,289$150M74.99%+24,620Timeline
QQQINVESCO QQQ TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 18,787 shares; 2024Q4: 23,339 shares; 2025Q1: 24,143 shares; 2025Q2: 24,947 shares; 2025Q3: 25,778 shares 25,778$15.5M7.73%+831Timeline
SPHYSPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 252,500 shares; 2025Q3: 244,536 shares 244,536$5.85M2.92%-7,964Timeline
USHYISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 159,100 shares; 2025Q3: 154,078 shares 154,078$5.82M2.91%-5,022Timeline
SRLNSSGA ACTIVE ETF TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 164,268 shares; 2024Q4: 173,388 shares; 2025Q1: 173,388 shares; 2025Q2: 143,388 shares; 2025Q3: 138,861 shares 138,861$5.77M2.88%-4,527Timeline
SJNKSPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 270,633 shares; 2024Q4: 285,663 shares; 2025Q1: 285,663 shares; 2025Q2: 232,470 shares; 2025Q3: 225,135 shares 225,135$5.76M2.88%-7,335Timeline
FTSLFIRST TR EXCHANGE-TRADED FDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 143,155 shares; 2024Q4: 151,105 shares; 2025Q1: 151,105 shares; 2025Q2: 151,105 shares; 2025Q3: 124,536 shares 124,536$5.71M2.85%-26,569Timeline
HYGISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 69,250 shares 69,250$5.66M2.83%newTimeline

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001539639-25-000009 base2025-11-25acceptance time not in the bulk data set