Rock Springs Capital Management’s MacroGenics MGNX Stock Holding History

Rock Springs Capital Management’s Portfolio MGNX Stock Details MGNX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q2	–	Sell	-1,145,214	Closed	-$1.45M	–	98
2025 Q1	$1.45M	Buy	1,145,214 +91,567	+9%	+$239K	0.08%	82
2024 Q4	$3.42M	Hold	1,053,647	–	–	0.13%	85
2024 Q3	$3.47M	Hold	1,053,647	–	–	0.11%	90
2024 Q2	$4.48M	Sell	1,053,647 -251,603	-19%	-$2.45M	0.13%	86
2024 Q1	$19.2M	Buy	1,305,250 +126,454	+11%	+$1.91M	0.49%	59
2023 Q4	$11.3M	Hold	1,178,796	–	–	0.28%	70
2023 Q3	$5.49M	Buy	1,178,796 +55,700	+5%	+$277K	0.15%	84
2023 Q2	$6.01M	Hold	1,123,096	–	–	0.14%	85
2023 Q1	$8.05M	Hold	1,123,096	–	–	0.19%	80
2022 Q4	$7.54M	Sell	1,123,096 -83,546	-7%	-$458K	0.18%	78
2022 Q3	$4.17M	Buy	1,206,642 +251,914	+26%	+$964K	0.11%	98
2022 Q2	$2.82M	Buy	954,728 +22,000	+2%	+$116K	0.08%	108
2022 Q1	$8.22M	Buy	932,728 +75,523	+9%	+$834K	0.21%	90
2021 Q4	$13.8M	Buy	857,205 +215,389	+34%	+$4.05M	0.32%	79
2021 Q3	$13.4M	Buy	641,816 +186,000	+41%	+$4.48M	0.28%	92
2021 Q2	$12.2M	Buy	455,816 +62,337	+16%	+$1.83M	0.24%	103
2021 Q1	$12.5M	Buy	393,479 +83,969	+27%	+$2.04M	0.27%	97
2020 Q4	$7.08M	Buy	309,510 +46,869	+18%	+$1.08M	0.15%	128
2020 Q3	$6.62M	Buy	262,641 +28,125	+12%	+$768K	0.17%	119
2020 Q2	$6.55M	Buy	234,516 +4,516	+2%	+$78.4K	0.18%	121
2020 Q1	$1.34M	Hold	230,000	–	–	0.06%	124
2019 Q4	$2.5M	Sell	230,000 -70,000	-23%	-$693K	0.08%	116
2019 Q3	$3.83M	Hold	300,000	–	–	0.15%	115
2019 Q2	$5.09M	Hold	300,000	–	–	0.18%	103
2019 Q1	$5.39M	Buy	300,000 +219,019	+270%	+$3.79M	0.21%	107
2018 Q4	$1.03M	Sell	80,981 -194,019	-71%	-$3.25M	0.05%	131
2018 Q3	$5.9M	Hold	275,000	–	–	0.21%	110
2018 Q2	$5.68M	Hold	275,000	–	–	0.22%	111
2018 Q1	$6.92M	Buy	275,000 +50,000	+22%	+$1.21M	0.3%	97
2017 Q4	$4.28M	Hold	225,000	–	–	0.19%	111
2017 Q3	$4.16M	Hold	225,000	–	–	0.19%	109
2017 Q2	$3.94M	Hold	225,000	–	–	0.2%	107
2017 Q1	$4.18M	Hold	225,000	–	–	0.24%	97
2016 Q4	$4.6M	Hold	225,000	–	–	0.31%	82
2016 Q3	$6.73M	Hold	225,000	–	–	0.42%	68
2016 Q2	$6.07M	Hold	225,000	–	–	0.45%	73
2016 Q1	$4.22M	Buy	225,000 +7,000	+3%	+$133K	0.35%	87
2015 Q4	$6.75M	Hold	218,000	–	–	0.51%	67
2015 Q3	$4.67M	Buy	218,000 +80,500	+59%	+$2.53M	0.38%	86
2015 Q2	$5.22M	Buy	137,500 +21,000	+18%	+$690K	0.38%	86
2015 Q1	$3.65M	Buy	+116,500	New	+$3.95M	0.34%	86

Other funds holding MGNX

Bellevue Group Kuesnacht, Switzerland $4.2B AUM 54.85% 1-Year Est. Return

Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

FLSM

Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

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

EcoR1 Capital San Francisco, California $2.36B AUM 204.53% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Rock Springs Capital Management's MGNX Position: Q2 2025 in Review

Rock Springs Capital Management sold out of MacroGenics (MGNX) in Q2 2025, closing a stake of 1,145,214 shares — an estimated $1.45M sold.

Rock Springs Capital Management first reported a position in MGNX in Q1 2015 and held it in 41 quarters. The position peaked at $19.2M in Q1 2024. 112 funds tracked by Wall St. Rank hold MGNX as of Q2 2025.

Rock Springs Capital Management reported no remaining MacroGenics position as of Q2 2025 after selling out during the quarter.
Rock Springs Capital Management sold 1,145,214 MacroGenics shares in Q2 2025, an estimated $1.45M.
Rock Springs Capital Management first reported a position in MacroGenics in Q1 2015 and held it in 41 quarters.
Rock Springs Capital Management's MacroGenics position peaked at $19.2M in Q1 2024.
112 funds tracked by Wall St. Rank held MacroGenics as of Q2 2025.

Based on Rock Springs Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.