Westfield Capital Management
AMGN icon

Westfield Capital Management’s Amgen AMGN Stock Holding History

Westfield Capital Management’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
2026
Q1 		$6M Buy
+17,052
New +$6.08M 0.03% 199
2014
Q2 		– Sell
-234,431
Closed -$28.9M – 314
2014
Q1 		$28.9M Sell
234,431
-809,927
-78% -$98.2M 0.17% 174
2013
Q4 		$119M Sell
1,044,358
-158,193
-13% -$18M 0.7% 47
2013
Q3 		$135M Buy
+1,202,551
New +$130M 0.86% 30

Other funds holding AMGN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Westfield Capital Management's AMGN Position: Q1 2026 in Review

Westfield Capital Management opened a new position in Amgen (AMGN) in Q1 2026: 17,052 shares worth $6M. The stake represents 0.03% of the portfolio and ranks #199 among its holdings. This is a return to the name: Westfield Capital Management previously reported a position in AMGN as recently as Q1 2014.

Westfield Capital Management first reported a position in AMGN in Q3 2013 and has held it in 4 quarters since. The position peaked at $135M in Q3 2013. 3,128 funds tracked by Wall St. Rank hold AMGN as of Q1 2026.

  • Westfield Capital Management held 17,052 shares of Amgen worth $6M as of Q1 2026.
  • Amgen was a new Westfield Capital Management position in Q1 2026.
  • Amgen made up 0.03% of Westfield Capital Management's portfolio in Q1 2026, its #199 holding.
  • Westfield Capital Management first reported a position in Amgen in Q3 2013 and has held it in 4 quarters since.
  • Westfield Capital Management's Amgen position peaked at $135M in Q3 2013.
  • 3,128 funds tracked by Wall St. Rank held Amgen as of Q1 2026.

Based on Westfield Capital Management's 13F filing for Q1 2026, filed 11 May 2026.