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Weiss Asset Management’s Opko Health OPK Stock Holding History

Weiss Asset Management’s Portfolio OPK Stock Details OPK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-1,130,771
Closed -$1.75M – 774
2025
Q3 		$1.75M Sell
1,130,771
-3,626,221
-76% -$4.98M 0.02% 271
2025
Q2 		$6.28M Sell
4,756,992
-6,435,808
-57% -$8.8M 0.07% 149
2025
Q1 		$18.6M Buy
+11,192,800
New +$18.4M 0.37% 47

Other funds holding OPK

RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
WCM
Whitefort Capital Management New York $406M AUM 84.26% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Weiss Asset Management's OPK Position: Q4 2025 in Review

Weiss Asset Management sold out of Opko Health (OPK) in Q4 2025, closing a stake of 1,130,771 shares — an estimated $1.75M sold.

Weiss Asset Management first reported a position in OPK in Q1 2025 and held it in 3 quarters. The position peaked at $18.6M in Q1 2025. 220 funds tracked by Wall St. Rank hold OPK as of Q4 2025.

  • Weiss Asset Management reported no remaining Opko Health position as of Q4 2025 after selling out during the quarter.
  • Weiss Asset Management sold 1,130,771 Opko Health shares in Q4 2025, an estimated $1.75M.
  • Weiss Asset Management first reported a position in Opko Health in Q1 2025 and held it in 3 quarters.
  • Weiss Asset Management's Opko Health position peaked at $18.6M in Q1 2025.
  • 220 funds tracked by Wall St. Rank held Opko Health as of Q4 2025.

Based on Weiss Asset Management's 13F filing for Q4 2025, filed 17 Feb 2026.