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Atika Capital Management’s Protagonist Therapeutics PTGX Stock Holding History

Atika Capital Management’s Portfolio PTGX Stock Details PTGX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$7.61M Hold
62,100
– – 0.5% 53
2026
Q1 		$6.55M Sell
62,100
-23,900
-28% -$2.12M 0.82% 35
2025
Q4 		$7.51M Buy
86,000
+3,000
+4% +$246K 0.79% 39
2025
Q3 		$5.51M Buy
+83,000
New +$4.72M 0.44% 54

Other funds holding PTGX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $21.7B AUM 79.24% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
JJ
Johnson & Johnson New Brunswick, New Jersey $799M AUM 253.51% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Atika Capital Management's PTGX Position: Q2 2026 in Review

Atika Capital Management held its Protagonist Therapeutics (PTGX) position steady in Q2 2026 at 62,100 shares worth $7.61M. The position accounts for 0.5% of the portfolio, ranked #53.

Atika Capital Management first reported a position in PTGX in Q3 2025 and has held it in 4 quarters since. 344 funds tracked by Wall St. Rank hold PTGX as of Q2 2026.

  • Atika Capital Management held 62,100 shares of Protagonist Therapeutics worth $7.61M as of Q2 2026.
  • Atika Capital Management left its Protagonist Therapeutics share count unchanged in Q2 2026.
  • Protagonist Therapeutics made up 0.5% of Atika Capital Management's portfolio in Q2 2026, its #53 holding.
  • Atika Capital Management first reported a position in Protagonist Therapeutics in Q3 2025 and has held it in 4 quarters since.
  • 344 funds tracked by Wall St. Rank held Protagonist Therapeutics as of Q2 2026.

Based on Atika Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.