Twin Tree Management’s Amgen AMGN Stock Holding History

Twin Tree 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	–	Sell	-110,800	Closed	-$36.3M	–	1260
2025 Q4	$36.3M	Sell	110,800 -20,000	-15%	-$6.34M	0.32%	45
2025 Q3	$36.9M	Sell	130,800 -14,600	-10%	-$4.23M	0.15%	135
2025 Q2	$40.6M	Sell	145,400 -262,400	-64%	-$74.3M	0.08%	261
2025 Q1	$127M	Buy	407,800 +370,800	+1,002%	+$109M	0.24%	55
2024 Q4	$9.64M	Sell	37,000 -217,300	-85%	-$64.5M	0.02%	703
2024 Q3	$81.9M	Sell	254,300 -435,900	-63%	-$143M	0.16%	95
2024 Q2	$216M	Buy	+690,200	New	+$203M	0.49%	31
2024 Q1	–	Sell	-101,300	Closed	-$29.2M	–	1247
2023 Q4	$29.2M	Buy	+101,300	New	+$27.6M	0.06%	347
2022 Q2	–	Sell	-226,100	Closed	-$54.7M	–	1464
2022 Q1	$54.7M	Buy	+226,100	New	+$51.9M	0.09%	176
2021 Q1	–	Sell	-242,900	Closed	-$55.8M	–	1326
2020 Q4	$55.8M	Buy	242,900 +184,900	+319%	+$42.6M	0.22%	114
2020 Q3	$14.7M	Buy	58,000 +10,000	+21%	+$2.48M	0.06%	348
2020 Q2	$11.3M	Buy	+48,000	New	+$11M	0.05%	424
2020 Q1	–	Sell	-58,200	Closed	-$14M	–	1334
2019 Q4	$14M	Hold	58,200	–	–	0.05%	289
2019 Q3	$11.3M	Buy	+58,200	New	+$11.2M	0.04%	297
2019 Q2	–	Sell	-23,200	Closed	-$4.41M	–	1222
2019 Q1	$4.41M	Sell	23,200 -21,400	-48%	-$4.09M	0.02%	474
2018 Q4	$8.68M	Buy	+44,600	New	+$8.7M	0.05%	353
2018 Q2	–	Sell	-34,800	Closed	-$5.93M	–	1120
2018 Q1	$5.93M	Buy	+34,800	New	+$6.39M	0.05%	310
2017 Q4	–	Sell	-19,600	Closed	-$3.65M	–	990
2017 Q3	$3.65M	Sell	19,600 -265,000	-93%	-$47M	0.03%	448
2017 Q2	$49M	Sell	284,600 -350,300	-55%	-$57M	0.38%	49
2017 Q1	$104M	Buy	634,900 +530,200	+506%	+$88.1M	0.94%	14
2016 Q4	$15.3M	Buy	104,700 +48,200	+85%	+$7.25M	0.15%	166
2016 Q3	$9.43M	Buy	56,500 +8,400	+17%	+$1.42M	0.12%	170
2016 Q2	$7.32M	Sell	48,100 -14,600	-23%	-$2.27M	0.11%	190
2016 Q1	$9.4M	Sell	62,700 -56,500	-47%	-$8.39M	0.18%	115
2015 Q4	$19.4M	Buy	119,200 +23,400	+24%	+$3.68M	0.38%	31
2015 Q3	$13.3M	Buy	95,800 +55,000	+135%	+$8.67M	0.34%	36
2015 Q2	$6.26M	Sell	40,800 -45,000	-52%	-$7.21M	0.15%	131
2015 Q1	$13.7M	Sell	85,800 -79,100	-48%	-$12.5M	0.35%	44
2014 Q4	$26.3M	Buy	164,900 +40,200	+32%	+$6.26M	0.73%	7
2014 Q3	$17.5M	Buy	124,700 +56,500	+83%	+$7.38M	0.47%	25
2014 Q2	$8.07M	Sell	68,200 -5,500	-7%	-$637K	0.18%	102
2014 Q1	$9.09M	Sell	73,700 -4,600	-6%	-$558K	0.18%	98
2013 Q4	$8.93M	Buy	78,300 +5,300	+7%	+$603K	0.21%	74
2013 Q3	$8.17M	Buy	73,000 +11,000	+18%	+$1.19M	0.28%	45
2013 Q2	$6.12M	Buy	+62,000	New	+$6.43M	0.24%	56

Other funds holding AMGN

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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 San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Twin Tree Management's AMGN Position: Q4 2025 in Review

Twin Tree Management sold out of Amgen (AMGN) in Q4 2025, closing a stake of 5,150 shares — an estimated $1.63M sold.

Twin Tree Management first reported a position in AMGN in Q2 2013 and held it in 25 quarters. The position peaked at $79.1M in Q4 2023. 3,084 funds tracked by Wall St. Rank hold AMGN as of Q4 2025.

Twin Tree Management reported no remaining Amgen position as of Q4 2025 after selling out during the quarter.
Twin Tree Management sold 5,150 Amgen shares in Q4 2025, an estimated $1.63M.
Twin Tree Management first reported a position in Amgen in Q2 2013 and held it in 25 quarters.
Twin Tree Management's Amgen position peaked at $79.1M in Q4 2023.
3,084 funds tracked by Wall St. Rank held Amgen as of Q4 2025.

Based on Twin Tree Management's 13F filing for Q4 2025, filed 11 Feb 2026.