Millennium Management
OSG

Millennium Management’s Octave Specialty Group OSG Stock Holding History

Millennium Management’s Portfolio OSG Stock Details OSG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2021
Q1 		– Sell
-100,000
Closed -$1.54M – 5860
2020
Q4 		$1.54M Hold
100,000
– – ﹤0.01% 3436
2020
Q3 		$1.28K Buy
+100,000
New +$1.29M ﹤0.01% 2960

Other funds holding OSG

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
WSL
Western Standard LLC Los Angeles, California $190M AUM 40.88% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1B AUM 51.95% 1-Year Est. Return
WHCM
Wolf Hill Capital Management Greenwich, Connecticut $1.03B AUM 80.44% 1-Year Est. Return
GJL
Gendell Jeffrey L $7.34B AUM 183.72% 1-Year Est. Return
TAM
Third Avenue Management New York $616M AUM 45.6% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
BCC
Bain Capital Credit Boston, Massachusetts $303M AUM 15.47% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Millennium Management's OSG Position: Q1 2026 in Review

Millennium Management reduced its Octave Specialty Group (OSG) stake by 55% in Q1 2026, selling an estimated $963K and leaving 135,088 shares worth $628K. The position accounts for ﹤0.01% of the portfolio, ranked #4654.

Millennium Management first reported a position in OSG in Q2 2013 and has held it in 45 quarters since. The position peaked at $14.6M in Q3 2015. 148 funds tracked by Wall St. Rank hold OSG as of Q1 2026.

  • Millennium Management held 135,088 shares of Octave Specialty Group worth $628K as of Q1 2026.
  • Millennium Management sold 168,194 Octave Specialty Group shares in Q1 2026, an estimated $963K.
  • Octave Specialty Group made up ﹤0.01% of Millennium Management's portfolio in Q1 2026, its #4654 holding.
  • Millennium Management first reported a position in Octave Specialty Group in Q2 2013 and has held it in 45 quarters since.
  • Millennium Management's Octave Specialty Group position peaked at $14.6M in Q3 2015.
  • 148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q1 2026.

Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.