Question 1

Does Renaissance Technologies own ACIU stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Renaissance Technologies holds 840,127 shares of ACIU (Ac Immune), worth $2M.

Question 2

How many shares of ACIU does Renaissance Technologies own?

Accepted Answer

As of its Q2 2026 13F, Renaissance Technologies holds 840,127 shares of ACIU (Ac Immune).

Question 3

What is Renaissance Technologies' ACIU position worth?

Accepted Answer

As of its Q2 2026 13F, Renaissance Technologies' ACIU position is worth $2M.

Question 4

Is Renaissance Technologies buying or selling ACIU?

Accepted Answer

In Q2 2026, Renaissance Technologies increased its ACIU position by 215,760 shares (+34.6%).

Question 5

When did Renaissance Technologies first buy ACIU?

Accepted Answer

Renaissance Technologies already held ACIU in its Q3 2019 13F, the earliest on record, and has listed it in 28 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	840,127	+34.6%	$2M	0.0%	$2.38	33
2026-Q1	Decreased	624,367	-6.7%	$1.7M	0.0%	$2.91	0
2025-Q4	Decreased	668,867	-13.2%	$2.1M	0.0%	$3.15	0
2025-Q3	Decreased	770,419	-7.0%	$2.2M	0.0%	$3.04	0
2025-Q2	Increased	828,321	+3.1%	$1.7M	0.0%	$2.01	26
2025-Q1	Increased	803,469	+8.6%	$1.5M	0.0%	$1.98	28
2024-Q4	Increased	740,198	+14.6%	$2M	0.0%	$2.67	30
2024-Q3	Decreased	646,007	-0.9%	$2.4M	0.0%	$3.75	0
2024-Q2	Increased	652,079	+26.4%	$2.6M	0.0%	$3.99	32
2024-Q1	Increased	515,779	+23.5%	$1.5M	0.0%	$2.96	31
2023-Q4	Decreased	417,579	-1.8%	$2.1M	0.0%	$5.00	0
2023-Q3	Increased	425,179	+1.7%	$1.2M	0.0%	$2.85	26
2023-Q2	Increased	417,979	+1.7%	$1.2M	0.0%	$3.08	26
2023-Q1	Increased	411,079	+1.6%	$962,000	0.0%	$2.38	25
2022-Q4	Decreased	404,679	-6.9%	$826,000	0.0%	$2.04	0
2022-Q3	Decreased	434,879	-8.4%	$1.4M	0.0%	$3.29	0
2022-Q2	Increased	474,590	+4.9%	$1.7M	0.0%	$3.63	27
2022-Q1	Increased	452,490	+2.3%	$1.8M	0.0%	$4.20	26
2021-Q4	Increased	442,190	+4.1%	$2.2M	0.0%	$5.02	27
2021-Q3	Decreased	424,690	-0.3%	$2.9M	0.0%	$6.84	0
2021-Q2	Decreased	426,190	-0.0%	$3.4M	0.0%	$8.19	0
2021-Q1	Decreased	426,290	-26.3%	$3.2M	0.0%	$7.34	0
2020-Q4	Decreased	578,560	-11.0%	$3M	0.0%	$5.13	0
2020-Q3	Decreased	650,211	-17.3%	$3.2M	0.0%	$4.81	0
2020-Q2	Increased	786,011	+16.1%	$5.3M	0.0%	$6.75	31
2020-Q1	Increased	677,311	+39.0%	$4.7M	0.0%	$7.30	35
2019-Q4	Increased	487,402	+28.2%	$4.2M	0.0%	$8.20	33
2019-Q3	First report	380,102	-	$1.9M	0.0%	$4.94	0

ACIU28 quarters

ACIU
28 quarters