Optiver Holding
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Optiver Holding’s Phathom Pharmaceuticals PHAT Stock Holding History

Optiver Holding’s Portfolio PHAT Stock Details PHAT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.13K Buy
282
+84
+42% +$1.06K ﹤0.01% 1642
2025
Q4 		$3.29K Sell
198
-386
-66% -$5.51K ﹤0.01% 1693
2025
Q3 		$6.87K Buy
+584
New +$6.03K ﹤0.01% 1524

Other funds holding PHAT

FLSM
Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return
MVM
Medicxi Ventures Management St. Helier, Jersey $982M AUM 210.17% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
CG
Carlyle Group Washington, District of Columbia $10.6B AUM 11.25% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
NMC
NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return
6CM
683 Capital Management New York $1.92B AUM 85.52% 1-Year Est. Return
Ensign Peak Advisors
Ensign Peak Advisors Salt Lake City, Utah $53.7B AUM 29.47% 1-Year Est. Return

Optiver Holding's PHAT Position: Q1 2026 in Review

Optiver Holding increased its Phathom Pharmaceuticals (PHAT) stake by 42% in Q1 2026, buying an estimated $1.06K and bringing the position to 282 shares worth $3.13K. The position accounts for ﹤0.01% of the portfolio, ranked #1642.

Optiver Holding first reported a position in PHAT in Q3 2025 and has held it in 3 quarters since. The position peaked at $6.87K in Q3 2025. 174 funds tracked by Wall St. Rank hold PHAT as of Q1 2026.

  • Optiver Holding held 282 shares of Phathom Pharmaceuticals worth $3.13K as of Q1 2026.
  • Optiver Holding bought 84 Phathom Pharmaceuticals shares in Q1 2026, an estimated $1.06K.
  • Phathom Pharmaceuticals made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #1642 holding.
  • Optiver Holding first reported a position in Phathom Pharmaceuticals in Q3 2025 and has held it in 3 quarters since.
  • Optiver Holding's Phathom Pharmaceuticals position peaked at $6.87K in Q3 2025.
  • 174 funds tracked by Wall St. Rank held Phathom Pharmaceuticals as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.