Platinum Investment Management’s AC Immune ACIU Stock Holding History

Platinum Investment Management’s Portfolio ACIU Stock Details ACIU Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q2	–	Sell	-739,342	Closed	-$1.38M	–	116
2025 Q1	$1.38M	Sell	739,342 -212,727	-22%	-$536K	0.08%	61
2024 Q4	$2.57M	Hold	952,069	–	–	0.15%	56
2024 Q3	$3.6M	Hold	952,069	–	–	0.16%	49
2024 Q2	$3.8M	Sell	952,069 -142,957	-13%	-$473K	0.15%	46
2024 Q1	$3.24M	Sell	1,095,026 -420,559	-28%	-$1.51M	0.13%	55
2023 Q4	$7.58M	Buy	1,515,585 +193,123	+15%	+$621K	0.31%	46
2023 Q3	$3.77M	Hold	1,322,462	–	–	0.15%	56
2023 Q2	$3.91M	Buy	1,322,462 +240,000	+22%	+$524K	0.14%	63
2023 Q1	$2.53M	Hold	1,082,462	–	–	0.09%	76
2022 Q4	$2.21M	Buy	1,082,462 +23,000	+2%	+$59.3K	0.08%	76
2022 Q3	$3.35M	Hold	1,059,462	–	–	0.14%	59
2022 Q2	$3.83M	Sell	1,059,462 -3,000	-0.3%	-$10.3K	0.14%	58
2022 Q1	$4.25M	Hold	1,062,462	–	–	0.13%	60
2021 Q4	$5.26M	Hold	1,062,462	–	–	0.15%	60
2021 Q3	$7.13M	Buy	1,062,462 +634,926	+149%	+$4.55M	0.2%	52
2021 Q2	$3.39M	Buy	+427,536	New	+$2.95M	0.08%	77

Other funds holding ACIU

BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return

Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

Platinum Investment Management's ACIU Position: Q2 2025 in Review

Platinum Investment Management sold out of AC Immune (ACIU) in Q2 2025, closing a stake of 739,342 shares — an estimated $1.38M sold.

Platinum Investment Management first reported a position in ACIU in Q2 2021 and held it in 16 quarters. The position peaked at $7.58M in Q4 2023. 42 funds tracked by Wall St. Rank hold ACIU as of Q2 2025.

Platinum Investment Management reported no remaining AC Immune position as of Q2 2025 after selling out during the quarter.
Platinum Investment Management sold 739,342 AC Immune shares in Q2 2025, an estimated $1.38M.
Platinum Investment Management first reported a position in AC Immune in Q2 2021 and held it in 16 quarters.
Platinum Investment Management's AC Immune position peaked at $7.58M in Q4 2023.
42 funds tracked by Wall St. Rank held AC Immune as of Q2 2025.

Based on Platinum Investment Management's 13F filing for Q2 2025, filed 21 Jul 2025.