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Diadema Partners’s Amgen AMGN Stock Holding History

Diadema Partners’s Portfolio AMGN Stock Details AMGN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-62,100
Closed -$17.3M – 133
2025
Q2 		$17.3M Buy
62,100
+10,000
+19% +$2.83M 5.28% 2
2025
Q1 		$16.2M Buy
+52,100
New +$15.4M 4.24% 6

Other funds holding AMGN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return

Diadema Partners's AMGN Position: Q2 2026 in Review

Diadema Partners opened a new position in Amgen (AMGN) in Q2 2026: 102,701 shares worth $215K. The stake represents 0.03% of the portfolio and ranks #128 among its holdings. This is a return to the name: Diadema Partners previously reported a position in AMGN as recently as Q2 2025.

Diadema Partners first reported a position in AMGN in Q2 2025 and has held it in 2 quarters since. The position peaked at $14.5M in Q2 2025. 3,158 funds tracked by Wall St. Rank hold AMGN as of Q2 2026.

  • Diadema Partners held 102,701 shares of Amgen worth $215K as of Q2 2026.
  • Amgen was a new Diadema Partners position in Q2 2026.
  • Amgen made up 0.03% of Diadema Partners's portfolio in Q2 2026, its #128 holding.
  • Diadema Partners first reported a position in Amgen in Q2 2025 and has held it in 2 quarters since.
  • Diadema Partners's Amgen position peaked at $14.5M in Q2 2025.
  • 3,158 funds tracked by Wall St. Rank held Amgen as of Q2 2026.

Based on Diadema Partners's 13F filing for Q2 2026, filed 14 Aug 2026.