Harbor Advisors LLC

SEC CIK: 0001687156
Latest filing: Jul 28, 2026

SEC filings (opens in a new tab)

OSG holding history

Octave Specialty Group Inc in every 13F filed by Harbor Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

OSG overview All 13F holders of OSG Full Q2 2026 holdings

Shares (Q2 2026): 196,382
Value: $1.23M
% of portfolio: 0.2%
Quarters held: 22; Since Q1 2021

Holdings of OSG by Harbor Advisors LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	196,382	$1.23M	0.2%	00.0%	Unchanged	Holders
Q1 2026	196,382	$913.2K	0.1%	00.0%	Unchanged	Holders
Q4 2025	196,382	$1.53M	0.2%	00.0%	Unchanged	Holders
Q3 2025	196,382	$1.64M	0.3%	00.0%	Unchanged	Holders
Q2 2025	196,382	$1.39M	0.2%	00.0%	Unchanged	Holders
Q1 2025	196,382	$1.72M	0.3%	00.0%	Unchanged	Holders
Q4 2024	196,382	$2.48M	0.4%	00.0%	Unchanged	Holders
Q3 2024	196,382	$2.20M	0.4%	00.0%	Unchanged	Holders
Q2 2024	196,382	$2.52M	0.5%	00.0%	Unchanged	Holders
Q1 2024	196,382	$3.07M	0.6%	00.0%	Unchanged	Holders
Q4 2023	196,382	$3.24M	0.6%	00.0%	Unchanged	Holders
Q3 2023	196,382	$2.37M	0.5%	00.0%	Unchanged	Holders
Q2 2023	196,382	$2.80M	0.6%	00.0%	Unchanged	Holders
Q1 2023	196,382	$3.04M	0.7%	−55,000−21.9%	Reduced	Holders
Q4 2022	251,382	$4.38M	1.1%	00.0%	Unchanged	Holders
Q3 2022	251,382	$3.21M	0.9%	00.0%	Unchanged	Holders
Q2 2022	251,382	$2.85M	0.7%	00.0%	Unchanged	Holders
Q1 2022	251,382	$2.61M	0.5%	−10,000−3.8%	Reduced	Holders
Q4 2021	261,382	$4.20M	0.8%	00.0%	Unchanged	Holders
Q3 2021	261,382	$3.74M	0.7%	00.0%	Unchanged	Holders
Q2 2021	261,382	$4.09M	0.8%	00.0%	Unchanged	Holders
Q1 2021	261,382	$4.38M	1.0%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.