Calamos Advisors
OSG

Calamos Advisors’s Octave Specialty Group OSG Stock Holding History

Calamos Advisors’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
2026
Q1 		– Sell
-49,089
Closed -$382K – 1201
2025
Q4 		$382K Buy
+49,089
New +$420K ﹤0.01% 796

Other funds holding OSG

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
WSL
Western Standard LLC Los Angeles, California $295M AUM 40.98% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1.16B AUM 53.61% 1-Year Est. Return
WHCM
Wolf Hill Capital Management Greenwich, Connecticut $1.2B AUM 137.35% 1-Year Est. Return
GJL
Gendell Jeffrey L $11.3B AUM 163.05% 1-Year Est. Return
TAM
Third Avenue Management New York $625M AUM 48.93% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
BCC
Bain Capital Credit Boston, Massachusetts $368M AUM 9.33% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Calamos Advisors's OSG Position: Q1 2026 in Review

Calamos Advisors sold out of Octave Specialty Group (OSG) in Q1 2026, closing a stake of 49,089 shares — an estimated $382K sold.

Calamos Advisors first reported a position in OSG in Q4 2025 and held it in 1 quarter. The position peaked at $382K in Q4 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q1 2026.

  • Calamos Advisors reported no remaining Octave Specialty Group position as of Q1 2026 after selling out during the quarter.
  • Calamos Advisors sold 49,089 Octave Specialty Group shares in Q1 2026, an estimated $382K.
  • Calamos Advisors first reported a position in Octave Specialty Group in Q4 2025 and held it in 1 quarter.
  • Calamos Advisors's Octave Specialty Group position peaked at $382K in Q4 2025.
  • 148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q1 2026.

Based on Calamos Advisors's 13F filing for Q1 2026, filed 4 May 2026.