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Sio Capital Management’s GSK GSK Stock Holding History

Sio Capital Management’s Portfolio GSK Stock Details GSK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2015
Q3 		– Sell
-40,000
Closed -$2.08M – 40
2015
Q2 		$2.08M Buy
+40,000
New +$2.25M 1.03% 30

Other funds holding GSK

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
Fisher Asset Management
Fisher Asset Management Camas, Washington $295B AUM 31.6% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
JEST
JTC Employer Solutions Trustee St Helier, Jersey $1.2B AUM 37.55% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return

Sio Capital Management's GSK Position: Q1 2026 in Review

Sio Capital Management opened a new position in GSK (GSK) in Q1 2026: 385,879 shares worth $21.3M. The stake represents 3.05% of the portfolio and ranks #11 among its holdings. This is a return to the name: Sio Capital Management previously reported a position in GSK as recently as Q3 2025.

Sio Capital Management first reported a position in GSK in Q4 2014 and has held it in 21 quarters since. The position peaked at $23.3M in Q3 2022. 1,033 funds tracked by Wall St. Rank hold GSK as of Q1 2026.

  • Sio Capital Management held 385,879 shares of GSK worth $21.3M as of Q1 2026.
  • GSK was a new Sio Capital Management position in Q1 2026.
  • GSK made up 3.05% of Sio Capital Management's portfolio in Q1 2026, its #11 holding.
  • Sio Capital Management first reported a position in GSK in Q4 2014 and has held it in 21 quarters since.
  • Sio Capital Management's GSK position peaked at $23.3M in Q3 2022.
  • 1,033 funds tracked by Wall St. Rank held GSK as of Q1 2026.

Based on Sio Capital Management's 13F filing for Q1 2026, filed 14 May 2026.