Little Harbor Advisors, LLC

In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 25, 2025), Little Harbor Advisors, LLC reported 8 stock positions worth $200.1 million. Its top holding was SS SPDR S&P 500 ETF Trust-US (SPY) at 75.0% of the portfolio, followed by Invesco QQQ Trust Series 1 (QQQ, 7.7%) and SS SPDR P High Yield ETF (SPHY, 2.9%). Compared with Q2 2025, it opened 1 new position, added to 2 and reduced 5. The biggest buy was a new position in Ishr Ibx Usd Hiyld CB ETF-Ui (HYG) and the biggest sale First Trust Senior Loan ETF (FTSL, shares −18%).

Most Recent 13F
Q2 2026
Location
MARBLEHEAD, MA
CIK
0001539639
Portfolio Value
$200.1M (Q3 2025)
SEC Filing
0001539639-25-000009 ↗ filed Nov 25, 2025

Holdings Value

0$50.0M$100.0M$150.0M$200.0M$250.0M Q1 2024: $149.3M Q1 2024 Q2 2024: $154.8M Q2 2024 Q3 2024: $160.9M Q3 2024 Q4 2024: $169.4M Q4 2024 Q1 2025: $162.2M Q1 2025 Q2 2025: $168.5M Q2 2025 Q3 2025: $200.1M $200.1M Q3 2025 Q4 2025: $193.9M Q4 2025 Q1 2026: $168.4M Q1 2026 Q2 2026: $203.4M Q2 2026

Holdings 8 stocks · $200.1M
SPY SS SPDR S&P 500 ETF Trust-US 74.99% 225,289 $150.1M Add +12.3%
QQQ Invesco QQQ Trust Series 1 7.73% 25,778 $15.5M Add +3.3%
SPHY SS SPDR P High Yield ETF 2.92% 244,536 $5.9M Reduce -3.1%
USHY iShares Broad Usd High Yield 2.91% 154,078 $5.8M Reduce -3.2%
SRLN SS Blackstone Sr Loan ETF 2.88% 138,861 $5.8M Reduce -3.2%
SJNK SS SPDR BB St Hi Yield ETF 2.88% 225,135 $5.8M Reduce -3.2%
FTSL First Trust Senior Loan ETF 2.85% 124,536 $5.7M Reduce -17.6%
HYG Ishr Ibx Usd Hiyld CB ETF-Ui 2.83% 69,250 $5.7M New

Portfolio Sells Q2 2025 → Q3 2025
FTSL First Trust Senior Loan ETF Reduce -17.6% 2.85% −1.26
SRLN SS Blackstone Sr Loan ETF Reduce -3.2% 2.88% −0.65
SPHY SS SPDR P High Yield ETF Reduce -3.1% 2.92% −0.64
SJNK SS SPDR BB St Hi Yield ETF Reduce -3.2% 2.88% −0.63
USHY iShares Broad Usd High Yield Reduce -3.2% 2.91% −0.63

Portfolio Buys Q2 2025 → Q3 2025
HYG Ishr Ibx Usd Hiyld CB ETF-Ui New 2.83% +2.83
SPY SS SPDR S&P 500 ETF Trust-US Add +12.3% 74.99% +1.43
QQQ Invesco QQQ Trust Series 1 Add +3.3% 7.73% −0.43

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 6$203.4MSPY, QQQ, SJNK, HYG, JNK
Q1 2026 4$168.4MSPY, QQQ, SJNK, HYG
Q4 2025 8$193.9MSPY, QQQ, SPHY, USHY, SRLN
Q3 2025 8$200.1MSPY, QQQ, SPHY, USHY, SRLN
Q2 2025 7$168.5MSPY, QQQ, FTSL, SPHY, USHY
Q1 2025 7$162.2MSPY, QQQ, SJNK, BKLN, SRLN
Q4 2024 7$169.4MSPY, QQQ, BKLN, SRLN, SJNK
Q3 2024 7$160.9MSPY, QQQ, SJNK, BKLN, SRLN
Q2 2024 8$154.8MSPY, QQQ, BKLN, SRLN, SJNK
Q1 2024 8$149.3MSPY, QQQ, BKLN, SRLN, SJNK