Rock Springs Capital Management’s Penumbra PEN Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$39.6M	Hold	120,500	–	–	2.33%	12
2025 Q4	$37.5M	Hold	120,500	–	–	1.92%	17
2025 Q3	$30.5M	Sell	120,500 -8,000	-6%	-$2.02M	1.78%	19
2025 Q2	$33M	Sell	128,500 -42,500	-25%	-$11.6M	2.05%	15
2025 Q1	$45.7M	Sell	171,000 -69,000	-29%	-$18.7M	2.62%	9
2024 Q4	$57M	Sell	240,000 -25,000	-9%	-$5.68M	2.17%	13
2024 Q3	$51.5M	Hold	265,000	–	–	1.68%	19
2024 Q2	$47.7M	Sell	265,000 -240,000	-48%	-$47.9M	1.44%	27
2024 Q1	$113M	Sell	505,000 -32,500	-6%	-$8.03M	2.86%	7
2023 Q4	$135M	Buy	537,500 +33,750	+7%	+$7.46M	3.34%	6
2023 Q3	$122M	Buy	503,750 +137,750	+38%	+$38.2M	3.26%	7
2023 Q2	$126M	Sell	366,000 -67,500	-16%	-$20.7M	3%	7
2023 Q1	$121M	Sell	433,500 -74,750	-15%	-$19.1M	2.88%	9
2022 Q4	$113M	Buy	508,250 +32,250	+7%	+$6.31M	2.72%	9
2022 Q3	$90.3M	Buy	476,000 +74,500	+19%	+$12M	2.33%	11
2022 Q2	$50M	Buy	401,500 +197,000	+96%	+$31.3M	1.46%	22
2022 Q1	$45.4M	Buy	204,500 +56,000	+38%	+$12.4M	1.14%	33
2021 Q4	$42.7M	Buy	148,500 +1,000	+0.7%	+$264K	0.99%	35
2021 Q3	$39.3M	Hold	147,500	–	–	0.83%	41
2021 Q2	$40.4M	Hold	147,500	–	–	0.8%	41
2021 Q1	$39.9M	Sell	147,500 -11,500	-7%	-$2.97M	0.87%	41
2020 Q4	$27.8M	Hold	159,000	–	–	0.59%	58
2020 Q3	$30.9M	Sell	159,000 -48,000	-23%	-$10.1M	0.78%	38
2020 Q2	$37M	Sell	207,000 -18,000	-8%	-$3.12M	1.02%	37
2020 Q1	$36.3M	Sell	225,000 -17,500	-7%	-$2.95M	1.5%	20
2019 Q4	$39.8M	Hold	242,500	–	–	1.26%	21
2019 Q3	$32.6M	Buy	242,500 +3,500	+1%	+$541K	1.3%	26
2019 Q2	$38.2M	Buy	239,000 +14,000	+6%	+$2.02M	1.4%	18
2019 Q1	$33.1M	Hold	225,000	–	–	1.29%	20
2018 Q4	$27.5M	Sell	225,000 -10,200	-4%	-$1.37M	1.3%	22
2018 Q3	$35.2M	Sell	235,200 -1,550	-0.7%	-$217K	1.27%	17
2018 Q2	$32.7M	Sell	236,750 -6,250	-3%	-$890K	1.26%	20
2018 Q1	$28.1M	Sell	243,000 -67,500	-22%	-$6.97M	1.2%	24
2017 Q4	$29.2M	Hold	310,500	–	–	1.33%	21
2017 Q3	$28M	Hold	310,500	–	–	1.29%	20
2017 Q2	$27.2M	Hold	310,500	–	–	1.39%	20
2017 Q1	$25.9M	Buy	310,500 +15,000	+5%	+$1.14M	1.5%	21
2016 Q4	$18.9M	Buy	295,500 +29,000	+11%	+$1.94M	1.26%	26
2016 Q3	$20.3M	Buy	266,500 +24,000	+10%	+$1.66M	1.27%	27
2016 Q2	$14.4M	Buy	242,500 +14,000	+6%	+$754K	1.07%	29
2016 Q1	$10.5M	Buy	228,500 +23,500	+11%	+$1.1M	0.88%	36
2015 Q4	$11M	Buy	205,000 +10,000	+5%	+$453K	0.84%	41
2015 Q3	$7.82M	Buy	+195,000	New	+$7.89M	0.64%	55